- base_nameOptional parameter that allows the user to define multiple mechanics material systems on the same block, i.e. for multiple phases
C++ Type:std::string
Controllable:No
Description:Optional parameter that allows the user to define multiple mechanics material systems on the same block, i.e. for multiple phases
- blockThe list of blocks (ids or names) that this object will be applied
C++ Type:std::vector<SubdomainName>
Controllable:No
Description:The list of blocks (ids or names) that this object will be applied
- boundaryThe list of boundaries (ids or names) from the mesh where this object applies
C++ Type:std::vector<BoundaryName>
Controllable:No
Description:The list of boundaries (ids or names) from the mesh where this object applies
- computeTrueWhen false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the MaterialBase via MaterialBasePropertyInterface::getMaterialBase(). Non-computed MaterialBases are not sorted for dependencies.
Default:True
C++ Type:bool
Controllable:No
Description:When false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the MaterialBase via MaterialBasePropertyInterface::getMaterialBase(). Non-computed MaterialBases are not sorted for dependencies.
- constant_onNONEWhen ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped
Default:NONE
C++ Type:MooseEnum
Controllable:No
Description:When ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped
- declare_suffixAn optional suffix parameter that can be appended to any declared properties. The suffix will be prepended with a '_' character.
C++ Type:MaterialPropertyName
Unit:(no unit assumed)
Controllable:No
Description:An optional suffix parameter that can be appended to any declared properties. The suffix will be prepended with a '_' character.
Wave Speed
Calculate the wave speed as where is the effective stiffness, and is the material density.
Description
The material WaveSpeed computes an approximate local wave speed for use in explicit dynamic simulations.
Input Parameters
- control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Controllable:No
Description:Adds user-defined labels for accessing object parameters via control logic.
- enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Controllable:Yes
Description:Set the enabled status of the MooseObject.
- implicitTrueDetermines whether this object is calculated using an implicit or explicit form
Default:True
C++ Type:bool
Controllable:No
Description:Determines whether this object is calculated using an implicit or explicit form
- seed0The seed for the master random number generator
Default:0
C++ Type:unsigned int
Controllable:No
Description:The seed for the master random number generator
- use_displaced_meshFalseWhether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.
Default:False
C++ Type:bool
Controllable:No
Description:Whether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.
Advanced Parameters
- output_propertiesList of material properties, from this material, to output (outputs must also be defined to an output type)
C++ Type:std::vector<std::string>
Controllable:No
Description:List of material properties, from this material, to output (outputs must also be defined to an output type)
- outputsnone Vector of output names where you would like to restrict the output of variables(s) associated with this object
Default:none
C++ Type:std::vector<OutputName>
Controllable:No
Description:Vector of output names where you would like to restrict the output of variables(s) associated with this object
Outputs Parameters
- prop_getter_suffixAn optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.
C++ Type:MaterialPropertyName
Unit:(no unit assumed)
Controllable:No
Description:An optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.
- use_interpolated_stateFalseFor the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.
Default:False
C++ Type:bool
Controllable:No
Description:For the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.
Material Property Retrieval Parameters
Input Files
- (modules/contact/test/tests/explicit_dynamics/test_balance.i)
- (modules/contact/test/tests/explicit_dynamics/first_test.i)
- (modules/solid_mechanics/test/tests/central_difference/lumped/3D/3d_lumped_explicit.i)
- (modules/contact/test/tests/explicit_dynamics/highvel.i)
- (modules/contact/test/tests/explicit_dynamics/test_balance_optimized.i)
- (modules/contact/test/tests/explicit_dynamics/deep_impact.i)
- (modules/contact/test/tests/explicit_dynamics/settlement.i)
(modules/contact/test/tests/explicit_dynamics/test_balance.i)
# One element test to test the central difference time integrator in 3D.
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
volumetric_locking_correction = true
[]
[Problem]
extra_tag_matrices = 'mass'
[]
[Mesh]
[block_one]
type = GeneratedMeshGenerator
dim = 3
nx = 3
ny = 3
nz = 3
xmin = 4.5
xmax = 5.5
ymin = 4.5
ymax = 5.5
zmin = 0.0001
zmax = 1.0001
boundary_name_prefix = 'ball'
[]
[block_two]
type = GeneratedMeshGenerator
dim = 3
nx = 2
ny = 2
nz = 2
xmin = 0.0
xmax = 10
ymin = 0.0
ymax = 10
zmin = -2
zmax = 0
boundary_name_prefix = 'base'
boundary_id_offset = 10
[]
[block_one_id]
type = SubdomainIDGenerator
input = block_one
subdomain_id = 1
[]
[block_two_id]
type = SubdomainIDGenerator
input = block_two
subdomain_id = 2
[]
[combine]
type = MeshCollectionGenerator
inputs = ' block_one_id block_two_id'
[]
allow_renumbering = false
[]
[Variables]
[disp_x]
[]
[disp_y]
[]
[disp_z]
[]
[]
[AuxVariables]
[gap_rate]
[]
[vel_x]
[]
[accel_x]
[]
[vel_y]
[]
[accel_y]
[]
[vel_z]
[]
[accel_z]
[]
[stress_zz]
family = MONOMIAL
order = CONSTANT
[]
[strain_zz]
family = MONOMIAL
order = CONSTANT
[]
[]
[AuxKernels]
[stress_zz]
type = RankTwoAux
rank_two_tensor = stress
index_i = 2
index_j = 2
variable = stress_zz
execute_on = 'TIMESTEP_END'
[]
[strain_zz]
type = RankTwoAux
rank_two_tensor = mechanical_strain
index_i = 2
index_j = 2
variable = strain_zz
[]
[accel_x]
type = TestNewmarkTI
variable = accel_x
displacement = disp_x
first = false
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[vel_x]
type = TestNewmarkTI
variable = vel_x
displacement = disp_x
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[accel_y]
type = TestNewmarkTI
variable = accel_y
displacement = disp_y
first = false
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[vel_y]
type = TestNewmarkTI
variable = vel_y
displacement = disp_x
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[accel_z]
type = TestNewmarkTI
variable = accel_z
displacement = disp_z
first = false
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[vel_z]
type = TestNewmarkTI
variable = vel_z
displacement = disp_z
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[]
[AuxVariables]
[penetration]
[]
[]
[AuxKernels]
[penetration]
type = PenetrationAux
variable = penetration
boundary = ball_back
paired_boundary = base_front
quantity = distance
[]
[]
[Kernels]
[DynamicTensorMechanics]
displacements = 'disp_x disp_y disp_z'
volumetric_locking_correction = true
stiffness_damping_coefficient = 0.001
generate_output = 'stress_zz strain_zz'
[]
[Mass_x]
type = MassMatrix
variable = disp_x
density = density
matrix_tags = 'mass'
[]
[Mass_y]
type = MassMatrix
variable = disp_y
density = density
matrix_tags = 'mass'
[]
[Mass_z]
type = MassMatrix
variable = disp_z
density = density
matrix_tags = 'mass'
[]
[]
[Kernels]
[gravity]
type = Gravity
variable = disp_z
value = -981.0
[]
[]
[BCs]
[x_front]
type = ExplicitDirichletBC
variable = disp_x
boundary = 'ball_front'
value = 0.0
[]
[y_front]
type = ExplicitDirichletBC
variable = disp_y
boundary = 'ball_front'
value = 0.0
[]
[x_fixed]
type = ExplicitDirichletBC
variable = disp_x
boundary = 'base_back'
value = 0.0
[]
[y_fixed]
type = ExplicitDirichletBC
variable = disp_y
boundary = 'base_back'
value = 0.0
[]
[z_fixed]
type = ExplicitDirichletBC
variable = disp_z
boundary = 'base_back'
value = 0.0
[]
[z_fixed_front]
type = ExplicitDirichletBC
variable = disp_z
boundary = 'base_front'
value = 0.0
[]
[]
[ExplicitDynamicsContact]
[my_contact]
model = frictionless_balance
primary = base_front
secondary = ball_back
vel_x = 'vel_x'
vel_y = 'vel_y'
vel_z = 'vel_z'
verbose = true
[]
[]
[Materials]
[elasticity_tensor_block_one]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e6
poissons_ratio = 0.0
block = 1
outputs = 'exodus'
output_properties = __all__
[]
[elasticity_tensor_block_two]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e10
poissons_ratio = 0.0
block = 2
outputs = 'exodus'
output_properties = __all__
[]
[strain_block]
type = ComputeFiniteStrain
displacements = 'disp_x disp_y disp_z'
implicit = false
[]
[stress_block]
type = ComputeFiniteStrainElasticStress
[]
[density_one]
type = GenericConstantMaterial
prop_names = density
prop_values = 1e1
outputs = 'exodus'
output_properties = 'density'
block = '1'
[]
[density_two]
type = GenericConstantMaterial
prop_names = density
prop_values = 1e6
outputs = 'exodus'
output_properties = 'density'
block = '2'
[]
[wave_speed]
type = WaveSpeed
outputs = 'exodus'
output_properties = 'wave_speed'
[]
[]
[Executioner]
type = Transient
start_time = 0
end_time = 0.0025
dt = 0.00001
timestep_tolerance = 1e-6
[TimeIntegrator]
type = ExplicitMixedOrder
mass_matrix_tag = 'mass'
second_order_vars = 'disp_x disp_y disp_z'
[]
[]
[Outputs]
interval = 10
exodus = true
csv = true
[]
[Postprocessors]
[accel_58z]
type = NodalVariableValue
nodeid = 1
variable = accel_z
[]
[vel_58z]
type = NodalVariableValue
nodeid = 1
variable = vel_z
[]
[disp_58z]
type = NodalVariableValue
nodeid = 1
variable = disp_z
[]
[critical_time_step]
type = CriticalTimeStep
[]
[contact_pressure_max]
type = NodalExtremeValue
variable = contact_pressure
block = '1 2'
value_type = max
[]
[]
(modules/contact/test/tests/explicit_dynamics/first_test.i)
# One element test to test the central difference time integrator in 3D.
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
[block_one]
type = GeneratedMeshGenerator
dim = 3
nx = 2
ny = 2
nz = 2
xmin = 4.5
xmax = 5.5
ymin = 4.5
ymax = 5.5
zmin = 0.0001
zmax = 1.0001
boundary_name_prefix = 'ball'
[]
[block_two]
type = GeneratedMeshGenerator
dim = 3
nx = 2
ny = 2
nz = 2
xmin = 0.0
xmax = 10
ymin = 0.0
ymax = 10
zmin = -2
zmax = 0
boundary_name_prefix = 'base'
boundary_id_offset = 10
[]
[block_one_id]
type = SubdomainIDGenerator
input = block_one
subdomain_id = 1
[]
[block_two_id]
type = SubdomainIDGenerator
input = block_two
subdomain_id = 2
[]
[combine]
type = MeshCollectionGenerator
inputs = ' block_one_id block_two_id'
[]
allow_renumbering = false
[]
[Variables]
[disp_x]
[]
[disp_y]
[]
[disp_z]
[]
[]
[AuxVariables]
[vel_x]
[]
[accel_x]
[]
[vel_y]
[]
[accel_y]
[]
[vel_z]
[]
[accel_z]
[]
[]
[AuxKernels]
[accel_x]
type = TestNewmarkTI
variable = accel_x
displacement = disp_x
first = false
[]
[vel_x]
type = TestNewmarkTI
variable = vel_x
displacement = disp_x
[]
[accel_y]
type = TestNewmarkTI
variable = accel_y
displacement = disp_y
first = false
[]
[vel_y]
type = TestNewmarkTI
variable = vel_y
displacement = disp_x
[]
[accel_z]
type = TestNewmarkTI
variable = accel_z
displacement = disp_z
first = false
[]
[vel_z]
type = TestNewmarkTI
variable = vel_z
displacement = disp_z
[]
[]
[Kernels]
[DynamicTensorMechanics]
displacements = 'disp_x disp_y disp_z'
volumetric_locking_correction = true
stiffness_damping_coefficient = 0.04
#generate_output = 'stress_zz strain_zz'
[]
[inertia_x]
type = InertialForce
variable = disp_x
[]
[inertia_y]
type = InertialForce
variable = disp_y
[]
[inertia_z]
type = InertialForce
variable = disp_z
[]
[]
[Functions]
[dispz]
type = ParsedFunction
expression = if(t<1.0e3,-0.01*t,0)
[]
[push]
type = ParsedFunction
expression = if(t<10.0,0.01*t,0.1)
[]
[]
[BCs]
[z_front]
type = FunctionDirichletBC
variable = disp_z
boundary = 'ball_front'
function = dispz
preset = false
[]
[x_front]
type = DirichletBC
variable = disp_x
boundary = 'ball_front'
preset = false
value = 0.0
[]
[y_front]
type = DirichletBC
variable = disp_y
boundary = 'ball_front'
preset = false
value = 0.0
[]
[x_fixed]
type = DirichletBC
variable = disp_x
boundary = 'base_back'
preset = false
value = 0.0
[]
[y_fixed]
type = DirichletBC
variable = disp_y
boundary = 'base_back'
preset = false
value = 0.0
[]
[z_fixed]
type = DirichletBC
variable = disp_z
boundary = 'base_back'
preset = false
value = 0.0
[]
[]
[ExplicitDynamicsContact]
[my_contact]
model = frictionless
primary = base_front
secondary = ball_back
penalty = 1.0e3
verbose = true
[]
[]
[Materials]
[elasticity_tensor_block_one]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e3
poissons_ratio = 0.0
block = 1
[]
[elasticity_tensor_block_two]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e6
poissons_ratio = 0.0
block = 2
[]
[strain_block]
type = ComputeIncrementalStrain
displacements = 'disp_x disp_y disp_z'
implicit = false
[]
[stress_block]
type = ComputeFiniteStrainElasticStress
[]
[density]
type = GenericConstantMaterial
prop_names = density
prop_values = 1e4
[]
[wave_speed]
type = WaveSpeed
[]
[]
[Executioner]
type = Transient
start_time = -0.01
end_time = 0.25
dt = 0.005
timestep_tolerance = 1e-6
[TimeIntegrator]
type = CentralDifference
[]
[]
[Postprocessors]
[disp_58z]
type = NodalVariableValue
nodeid = 1
variable = disp_z
[]
[critical_time_step]
type = CriticalTimeStep
[]
[contact_pressure_max]
type = NodalExtremeValue
variable = contact_pressure
block = '1 2'
value_type = max
[]
[]
[Outputs]
exodus = true
csv = true
[]
(modules/solid_mechanics/test/tests/central_difference/lumped/3D/3d_lumped_explicit.i)
# Test for the central difference time integrator in 3D.
[Mesh]
[./generated_mesh]
type = GeneratedMeshGenerator
dim = 3
nx = 1
ny = 1
nz = 2
xmin = 0.0
xmax = 1
ymin = 0.0
ymax = 1
zmin = 0.0
zmax = 2
[../]
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[AuxVariables]
[./vel_x]
[../]
[./accel_x]
[../]
[./vel_y]
[../]
[./accel_y]
[../]
[./vel_z]
[../]
[./accel_z]
[../]
[]
[AuxKernels]
[./accel_x]
type = TestNewmarkTI
variable = accel_x
displacement = disp_x
first = false
[../]
[./vel_x]
type = TestNewmarkTI
variable = vel_x
displacement = disp_x
[../]
[./accel_y]
type = TestNewmarkTI
variable = accel_y
displacement = disp_y
first = false
[../]
[./vel_y]
type = TestNewmarkTI
variable = vel_y
displacement = disp_x
[../]
[./accel_z]
type = TestNewmarkTI
variable = accel_z
displacement = disp_z
first = false
[../]
[./vel_z]
type = TestNewmarkTI
variable = vel_z
displacement = disp_z
[../]
[]
[Kernels]
[./DynamicSolidMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[./inertia_x]
type = InertialForce
variable = disp_x
[../]
[./inertia_y]
type = InertialForce
variable = disp_y
[../]
[./inertia_z]
type = InertialForce
variable = disp_z
[../]
[]
[BCs]
[./x_bot]
type = FunctionDirichletBC
variable = disp_x
boundary = 'back'
function = dispx
preset = false
[../]
[./y_bot]
type = FunctionDirichletBC
variable = disp_y
boundary = 'back'
function = dispy
preset = false
[../]
[./z_bot]
type = FunctionDirichletBC
variable = disp_z
boundary = 'back'
function = dispz
preset = false
[../]
[]
[Functions]
[./dispx]
type = PiecewiseLinear
x = '0.0 1.0 2.0 3.0 4.0' # time
y = '0.0 1.0 0.0 -1.0 0.0' # displacement
[../]
[./dispy]
type = ParsedFunction
expression = 0.1*t*t*sin(10*t)
[../]
[./dispz]
type = ParsedFunction
expression = 0.1*t*t*sin(20*t)
[../]
[]
[Materials]
[./elasticity_tensor_block]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e6
poissons_ratio = 0.25
block = 0
[../]
[./strain_block]
type = ComputeIncrementalStrain
block = 0
displacements = 'disp_x disp_y disp_z'
implicit = false
[../]
[./stress_block]
type = ComputeFiniteStrainElasticStress
block = 0
[../]
[./density]
type = GenericConstantMaterial
block = 0
prop_names = density
prop_values = 1e4
[../]
[wave_speed]
type = WaveSpeed
[]
[]
[Executioner]
type = Transient
start_time = -0.01
end_time = 0.1
dt = 0.005
timestep_tolerance = 1e-6
[./TimeIntegrator]
type = CentralDifference
solve_type = lumped
[../]
[]
[Postprocessors]
[./accel_10x]
type = NodalVariableValue
nodeid = 10
variable = accel_x
[../]
[]
[Outputs]
exodus = false
csv = true
[]
(modules/contact/test/tests/explicit_dynamics/highvel.i)
# One element test to test the central difference time integrator in 3D.
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
volumetric_locking_correction = true
[]
[Problem]
extra_tag_matrices = 'mass'
[]
[Mesh]
[block_one]
type = GeneratedMeshGenerator
dim = 3
nx = 3
ny = 3
nz = 3
xmin = 4.5
xmax = 5.5
ymin = 4.5
ymax = 5.5
zmin = 0.06
zmax = 1.06
boundary_name_prefix = 'ball'
[]
[block_two]
type = GeneratedMeshGenerator
dim = 3
nx = 2
ny = 2
nz = 2
xmin = 0.0
xmax = 10
ymin = 0.0
ymax = 10
zmin = -2
zmax = 0
boundary_name_prefix = 'base'
boundary_id_offset = 10
[]
[block_one_id]
type = SubdomainIDGenerator
input = block_one
subdomain_id = 1
[]
[block_two_id]
type = SubdomainIDGenerator
input = block_two
subdomain_id = 2
[]
[combine]
type = MeshCollectionGenerator
inputs = ' block_one_id block_two_id'
[]
[]
[AuxVariables]
[penetration]
[]
[]
[AuxKernels]
[penetration]
type = PenetrationAux
variable = penetration
boundary = ball_back
paired_boundary = base_front
quantity = distance
[]
[]
[Variables]
[disp_x]
[]
[disp_y]
[]
[disp_z]
[]
[]
[AuxVariables]
[gap_rate]
[]
[vel_x]
[]
[accel_x]
[]
[vel_y]
[]
[accel_y]
[]
[vel_z]
[]
[accel_z]
[]
[stress_zz]
family = MONOMIAL
order = CONSTANT
[]
[strain_zz]
family = MONOMIAL
order = CONSTANT
[]
[kinetic_energy_one]
order = CONSTANT
family = MONOMIAL
[]
[elastic_energy_one]
order = CONSTANT
family = MONOMIAL
[]
[kinetic_energy_two]
order = CONSTANT
family = MONOMIAL
[]
[elastic_energy_two]
order = CONSTANT
family = MONOMIAL
[]
[]
[AuxKernels]
[stress_zz]
type = RankTwoAux
rank_two_tensor = stress
index_i = 2
index_j = 2
variable = stress_zz
execute_on = 'TIMESTEP_END'
[]
[strain_zz]
type = RankTwoAux
rank_two_tensor = mechanical_strain
index_i = 2
index_j = 2
variable = strain_zz
[]
[accel_x]
type = TestNewmarkTI
variable = accel_x
displacement = disp_x
first = false
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[vel_x]
type = TestNewmarkTI
variable = vel_x
displacement = disp_x
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[accel_y]
type = TestNewmarkTI
variable = accel_y
displacement = disp_y
first = false
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[vel_y]
type = TestNewmarkTI
variable = vel_y
displacement = disp_x
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[accel_z]
type = TestNewmarkTI
variable = accel_z
displacement = disp_z
first = false
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[vel_z]
type = TestNewmarkTI
variable = vel_z
displacement = disp_z
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[kinetic_energy_one]
type = KineticEnergyAux
block = '1'
variable = kinetic_energy_one
newmark_velocity_x = vel_x
newmark_velocity_y = vel_y
newmark_velocity_z = vel_z
density = density
[]
[elastic_energy_one]
type = ElasticEnergyAux
variable = elastic_energy_one
block = '1'
[]
[kinetic_energy_two]
type = KineticEnergyAux
block = '2'
variable = kinetic_energy_two
newmark_velocity_x = vel_x
newmark_velocity_y = vel_y
newmark_velocity_z = vel_z
density = density
[]
[elastic_energy_two]
type = ElasticEnergyAux
variable = elastic_energy_two
block = '2'
[]
[]
[Kernels]
[DynamicTensorMechanics]
displacements = 'disp_x disp_y disp_z'
stiffness_damping_coefficient = 1.0e-3
generate_output = 'stress_zz strain_zz'
[]
[Mass_x]
type = MassMatrix
variable = disp_x
density = density
matrix_tags = 'mass'
[]
[Mass_y]
type = MassMatrix
variable = disp_y
density = density
matrix_tags = 'mass'
[]
[Mass_z]
type = MassMatrix
variable = disp_z
density = density
matrix_tags = 'mass'
[]
[gravity]
type = Gravity
variable = disp_z
value = -981
block = 1
[]
[]
[BCs]
[x_front]
type = ExplicitDirichletBC
variable = disp_x
boundary = 'ball_front'
value = 0.0
[]
[y_front]
type = ExplicitDirichletBC
variable = disp_y
boundary = 'ball_front'
value = 0.0
[]
[x_fixed]
type = ExplicitDirichletBC
variable = disp_x
boundary = 'base_back'
value = 0.0
[]
[y_fixed]
type = ExplicitDirichletBC
variable = disp_y
boundary = 'base_back'
value = 0.0
[]
[z_fixed]
type = ExplicitDirichletBC
variable = disp_z
boundary = 'base_back'
value = 0.0
[]
[z_fixed_front]
type = ExplicitDirichletBC
variable = disp_z
boundary = 'base_front'
value = 0.0
[]
[]
[ExplicitDynamicsContact]
[my_contact]
model = frictionless_balance
primary = base_front
secondary = ball_back
vel_x = 'vel_x'
vel_y = 'vel_y'
vel_z = 'vel_z'
verbose = true
[]
[]
[Materials]
[elasticity_tensor_block_one]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e6
poissons_ratio = 0.0
block = 1
outputs = 'exodus'
output_properties = __all__
[]
[elasticity_tensor_block_two]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e10
poissons_ratio = 0.0
block = 2
outputs = 'exodus'
output_properties = __all__
[]
[strain_block]
type = ComputeFiniteStrain # ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
implicit = false
[]
[stress_block]
type = ComputeFiniteStrainElasticStress
[]
[density_one]
type = GenericConstantMaterial
prop_names = density
prop_values = 1e1
outputs = 'exodus'
output_properties = 'density'
block = '1'
[]
[density_two]
type = GenericConstantMaterial
prop_names = density
prop_values = 1e6
outputs = 'exodus'
output_properties = 'density'
block = '2'
[]
[wave_speed]
type = WaveSpeed
outputs = 'exodus'
output_properties = 'wave_speed'
[]
[]
[Executioner]
type = Transient
end_time = 0.03
dt = 2e-4
timestep_tolerance = 1e-6
[TimeIntegrator]
type = ExplicitMixedOrder
mass_matrix_tag = mass
second_order_vars = 'disp_x disp_y disp_z'
[]
[]
[Outputs]
interval = 2
exodus = true
csv = true
execute_on = 'TIMESTEP_END'
file_base = highvel_out
[]
[Postprocessors]
[accel_58z]
type = NodalVariableValue
nodeid = 1
variable = accel_z
[]
[vel_58z]
type = NodalVariableValue
nodeid = 1
variable = vel_z
[]
[critical_time_step]
type = CriticalTimeStep
[]
[contact_pressure_max]
type = NodalExtremeValue
variable = contact_pressure
block = '1 2'
value_type = max
[]
[penetration_max]
type = NodalExtremeValue
variable = penetration
block = '1 2'
value_type = max
[]
[total_kinetic_energy_one]
type = ElementIntegralVariablePostprocessor
variable = kinetic_energy_one
block = '1'
[]
[total_elastic_energy_one]
type = ElementIntegralVariablePostprocessor
variable = elastic_energy_one
block = '1'
[]
[total_kinetic_energy_two]
type = ElementIntegralVariablePostprocessor
variable = kinetic_energy_two
block = '2'
[]
[total_elastic_energy_two]
type = ElementIntegralVariablePostprocessor
variable = elastic_energy_two
block = '2'
[]
[]
(modules/contact/test/tests/explicit_dynamics/test_balance_optimized.i)
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
volumetric_locking_correction = true
[]
[Problem]
extra_tag_matrices = 'mass'
[]
[Mesh]
[block_one]
type = GeneratedMeshGenerator
dim = 3
nx = 3
ny = 3
nz = 3
xmin = 4.5
xmax = 5.5
ymin = 4.5
ymax = 5.5
zmin = 0.0001
zmax = 1.0001
boundary_name_prefix = 'ball'
[]
[block_two]
type = GeneratedMeshGenerator
dim = 3
nx = 2
ny = 2
nz = 2
xmin = 0.0
xmax = 10
ymin = 0.0
ymax = 10
zmin = -2
zmax = 0
boundary_name_prefix = 'base'
boundary_id_offset = 10
[]
[block_one_id]
type = SubdomainIDGenerator
input = block_one
subdomain_id = 1
[]
[block_two_id]
type = SubdomainIDGenerator
input = block_two
subdomain_id = 2
[]
[combine]
type = MeshCollectionGenerator
inputs = ' block_one_id block_two_id'
[]
allow_renumbering = false
patch_update_strategy = auto
[]
[Variables]
[disp_x]
[]
[disp_y]
[]
[disp_z]
[]
[]
[AuxVariables]
[gap_rate]
[]
[vel_x]
[]
[accel_x]
[]
[vel_y]
[]
[accel_y]
[]
[vel_z]
[]
[accel_z]
[]
[]
[AuxKernels]
[accel_x]
type = TestNewmarkTI
variable = accel_x
displacement = disp_x
first = false
execute_on = 'TIMESTEP_END'
[]
[vel_x]
type = TestNewmarkTI
variable = vel_x
displacement = disp_x
execute_on = 'TIMESTEP_END'
[]
[accel_y]
type = TestNewmarkTI
variable = accel_y
displacement = disp_y
first = false
execute_on = 'TIMESTEP_END'
[]
[vel_y]
type = TestNewmarkTI
variable = vel_y
displacement = disp_x
execute_on = 'TIMESTEP_END'
[]
[accel_z]
type = TestNewmarkTI
variable = accel_z
displacement = disp_z
first = false
execute_on = 'TIMESTEP_END'
[]
[vel_z]
type = TestNewmarkTI
variable = vel_z
displacement = disp_z
execute_on = 'TIMESTEP_END'
[]
[]
[Kernels]
[DynamicTensorMechanics]
displacements = 'disp_x disp_y disp_z'
volumetric_locking_correction = true
stiffness_damping_coefficient = 0.001
decomposition_method = EigenSolution
[]
[Mass_x]
type = MassMatrix
variable = disp_x
density = density
matrix_tags = 'mass'
[]
[Mass_y]
type = MassMatrix
variable = disp_y
density = density
matrix_tags = 'mass'
[]
[Mass_z]
type = MassMatrix
variable = disp_z
density = density
matrix_tags = 'mass'
[]
[]
[Kernels]
[gravity]
type = Gravity
variable = disp_z
value = -981.0
[]
[]
[BCs]
[x_front]
type = ExplicitDirichletBC
variable = disp_x
boundary = 'ball_front'
value = 0.0
[]
[y_front]
type = ExplicitDirichletBC
variable = disp_y
boundary = 'ball_front'
value = 0.0
[]
[x_fixed]
type = ExplicitDirichletBC
variable = disp_x
boundary = 'base_back'
value = 0.0
[]
[y_fixed]
type = ExplicitDirichletBC
variable = disp_y
boundary = 'base_back'
value = 0.0
[]
[z_fixed]
type = ExplicitDirichletBC
variable = disp_z
boundary = 'base_back'
value = 0.0
[]
[z_fixed_front]
type = ExplicitDirichletBC
variable = disp_z
boundary = 'base_front'
value = 0.0
[]
[]
[ExplicitDynamicsContact]
[my_contact]
model = frictionless_balance
primary = base_front
secondary = ball_back
vel_x = 'vel_x'
vel_y = 'vel_y'
vel_z = 'vel_z'
[]
[]
[Materials]
[elasticity_tensor_block_one]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e6
poissons_ratio = 0.0
block = 1
constant_on = SUBDOMAIN
[]
[elasticity_tensor_block_two]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e10
poissons_ratio = 0.0
block = 2
constant_on = SUBDOMAIN
[]
[strain_block]
type = ComputeFiniteStrain
displacements = 'disp_x disp_y disp_z'
implicit = false
[]
[stress_block]
type = ComputeFiniteStrainElasticStress
[]
[density_one]
type = GenericConstantMaterial
prop_names = density
prop_values = 1e1
output_properties = 'density'
block = '1'
[]
[density_two]
type = GenericConstantMaterial
prop_names = density
prop_values = 1e6
output_properties = 'density'
block = '2'
[]
[wave_speed]
type = WaveSpeed
outputs = 'exodus'
output_properties = 'wave_speed'
[]
[]
[Executioner]
type = Transient
start_time = 0
end_time = 0.0025
dt = 0.00001
timestep_tolerance = 1e-6
[TimeIntegrator]
type = ExplicitMixedOrder
mass_matrix_tag = 'mass'
use_constant_mass = true
second_order_vars = 'disp_x disp_y disp_z'
[]
[]
[Outputs]
interval = 10
exodus = true
csv = true
file_base = test_balance_out
[]
(modules/contact/test/tests/explicit_dynamics/deep_impact.i)
# This test demonstrates explicit contact with MOOSE and includes optimizations
# to enhance performance.
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Problem]
extra_tag_matrices = 'mass'
[]
[Mesh]
[block_one]
type = GeneratedMeshGenerator
dim = 3
nx = 4
ny = 4
nz = 4
xmin = 4.5
xmax = 5.5
ymin = 4.5
ymax = 5.5
zmin = 0.0001
zmax = 1.0001
boundary_name_prefix = 'ball'
[]
[block_two]
type = GeneratedMeshGenerator
dim = 3
nx = 9
ny = 9
nz = 4
xmin = 3
xmax = 7
ymin = 3
ymax = 7
zmin = -2
zmax = 0
boundary_name_prefix = 'base'
boundary_id_offset = 10
[]
[block_one_id]
type = SubdomainIDGenerator
input = block_one
subdomain_id = 1
[]
[block_two_id]
type = SubdomainIDGenerator
input = block_two
subdomain_id = 2
[]
[combine]
type = MeshCollectionGenerator
inputs = ' block_one_id block_two_id'
[]
allow_renumbering = false
# patch_update_strategy = always
[]
[Variables]
[disp_x]
[]
[disp_y]
[]
[disp_z]
[]
[]
[AuxVariables]
[gap_rate]
[]
[vel_x]
[]
[accel_x]
[]
[vel_y]
[]
[accel_y]
[]
[vel_z]
[]
[accel_z]
[]
[]
[AuxKernels]
[accel_x]
type = TestNewmarkTI
variable = accel_x
displacement = disp_x
first = false
execute_on = 'TIMESTEP_END'
[]
[vel_x]
type = TestNewmarkTI
variable = vel_x
displacement = disp_x
execute_on = 'TIMESTEP_END'
[]
[accel_y]
type = TestNewmarkTI
variable = accel_y
displacement = disp_y
first = false
execute_on = 'TIMESTEP_END'
[]
[vel_y]
type = TestNewmarkTI
variable = vel_y
displacement = disp_x
execute_on = 'TIMESTEP_END'
[]
[accel_z]
type = TestNewmarkTI
variable = accel_z
displacement = disp_z
first = false
execute_on = 'TIMESTEP_END'
[]
[vel_z]
type = TestNewmarkTI
variable = vel_z
displacement = disp_z
execute_on = 'TIMESTEP_END'
[]
[]
[Kernels]
[DynamicTensorMechanics]
displacements = 'disp_x disp_y disp_z'
[]
[Mass_x]
type = MassMatrix
variable = disp_x
density = density
matrix_tags = 'mass'
[]
[Mass_y]
type = MassMatrix
variable = disp_y
density = density
matrix_tags = 'mass'
[]
[Mass_z]
type = MassMatrix
variable = disp_z
density = density
matrix_tags = 'mass'
[]
[]
[Kernels]
[gravity]
type = Gravity
variable = disp_z
value = -981.0
block = 1
[]
[]
[BCs]
[x_front]
type = ExplicitDirichletBC
variable = disp_x
boundary = 'ball_front'
value = 0.0
[]
[y_front]
type = ExplicitDirichletBC
variable = disp_y
boundary = 'ball_front'
value = 0.0
[]
[x_fixed]
type = ExplicitDirichletBC
variable = disp_x
boundary = 'base_back'
value = 0.0
[]
[y_fixed]
type = ExplicitDirichletBC
variable = disp_y
boundary = 'base_back'
value = 0.0
[]
[z_fixed]
type = ExplicitDirichletBC
variable = disp_z
boundary = 'base_back'
value = 0.0
[]
[]
[ExplicitDynamicsContact]
[my_contact]
model = frictionless_balance
primary = 'base_front ball_back'
secondary = 'ball_back base_front'
vel_x = 'vel_x'
vel_y = 'vel_y'
vel_z = 'vel_z'
[]
[]
[Materials]
[elasticity_tensor_block_one]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e1
poissons_ratio = 0.3
block = 1
constant_on = SUBDOMAIN
[]
[elasticity_tensor_block_two]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e7
poissons_ratio = 0.3
block = 2
constant_on = SUBDOMAIN
[]
[strain_block]
type = ComputeFiniteStrain
displacements = 'disp_x disp_y disp_z'
implicit = false
[]
[stress_block]
type = ComputeFiniteStrainElasticStress
[]
[density_one]
type = GenericConstantMaterial
prop_names = density
prop_values = 1e7
output_properties = 'density'
block = '1'
[]
[density_two]
type = GenericConstantMaterial
prop_names = density
prop_values = 1e3
output_properties = 'density'
block = '2'
[]
[wave_speed]
type = WaveSpeed
outputs = 'exodus'
output_properties = 'wave_speed'
[]
[]
[Executioner]
type = Transient
start_time = 0
end_time = 0.04
dt = 0.0001
timestep_tolerance = 1e-6
[TimeIntegrator]
type = ExplicitMixedOrder
mass_matrix_tag = 'mass'
use_constant_mass = true
second_order_vars = 'disp_x disp_y disp_z'
[]
skip_exception_check = true
[]
[Outputs]
interval = 100
exodus = true
[]
(modules/contact/test/tests/explicit_dynamics/settlement.i)
# One element test to test the central difference time integrator in 3D.
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
volumetric_locking_correction = true
[]
[Problem]
extra_tag_matrices = 'mass'
[]
[Mesh]
[block_one]
type = GeneratedMeshGenerator
dim = 3
nx = 3
ny = 3
nz = 3
xmin = 4.5
xmax = 5.5
ymin = 4.5
ymax = 5.5
zmin = 0.0001
zmax = 1.0001
boundary_name_prefix = 'ball'
[]
[block_two]
type = GeneratedMeshGenerator
dim = 3
nx = 2
ny = 2
nz = 2
xmin = 0.0
xmax = 10
ymin = 0.0
ymax = 10
zmin = -2
zmax = 0
boundary_name_prefix = 'base'
boundary_id_offset = 10
[]
[block_one_id]
type = SubdomainIDGenerator
input = block_one
subdomain_id = 1
[]
[block_two_id]
type = SubdomainIDGenerator
input = block_two
subdomain_id = 2
[]
[combine]
type = MeshCollectionGenerator
inputs = ' block_one_id block_two_id'
[]
[]
[AuxVariables]
[penetration]
[]
[]
[AuxKernels]
[penetration]
type = PenetrationAux
variable = penetration
boundary = ball_back
paired_boundary = base_front
quantity = distance
[]
[]
[Variables]
[disp_x]
[]
[disp_y]
[]
[disp_z]
[]
[]
[AuxVariables]
[gap_rate]
[]
[vel_x]
[]
[accel_x]
[]
[vel_y]
[]
[accel_y]
[]
[vel_z]
[]
[accel_z]
[]
[stress_zz]
family = MONOMIAL
order = CONSTANT
[]
[strain_zz]
family = MONOMIAL
order = CONSTANT
[]
[kinetic_energy_one]
order = CONSTANT
family = MONOMIAL
[]
[elastic_energy_one]
order = CONSTANT
family = MONOMIAL
[]
[kinetic_energy_two]
order = CONSTANT
family = MONOMIAL
[]
[elastic_energy_two]
order = CONSTANT
family = MONOMIAL
[]
[]
[AuxKernels]
[stress_zz]
type = RankTwoAux
rank_two_tensor = stress
index_i = 2
index_j = 2
variable = stress_zz
execute_on = 'TIMESTEP_END'
[]
[strain_zz]
type = RankTwoAux
rank_two_tensor = mechanical_strain
index_i = 2
index_j = 2
variable = strain_zz
[]
[accel_x]
type = TestNewmarkTI
variable = accel_x
displacement = disp_x
first = false
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[vel_x]
type = TestNewmarkTI
variable = vel_x
displacement = disp_x
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[accel_y]
type = TestNewmarkTI
variable = accel_y
displacement = disp_y
first = false
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[vel_y]
type = TestNewmarkTI
variable = vel_y
displacement = disp_x
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[accel_z]
type = TestNewmarkTI
variable = accel_z
displacement = disp_z
first = false
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[vel_z]
type = TestNewmarkTI
variable = vel_z
displacement = disp_z
execute_on = 'LINEAR TIMESTEP_BEGIN TIMESTEP_END'
[]
[kinetic_energy_one]
type = KineticEnergyAux
block = '1'
variable = kinetic_energy_one
newmark_velocity_x = vel_x
newmark_velocity_y = vel_y
newmark_velocity_z = vel_z
density = density
[]
[elastic_energy_one]
type = ElasticEnergyAux
variable = elastic_energy_one
block = '1'
[]
[kinetic_energy_two]
type = KineticEnergyAux
block = '2'
variable = kinetic_energy_two
newmark_velocity_x = vel_x
newmark_velocity_y = vel_y
newmark_velocity_z = vel_z
density = density
[]
[elastic_energy_two]
type = ElasticEnergyAux
variable = elastic_energy_two
block = '2'
[]
[]
[Kernels]
[DynamicTensorMechanics]
displacements = 'disp_x disp_y disp_z'
stiffness_damping_coefficient = 9.5e-4
generate_output = 'stress_zz strain_zz'
[]
[Mass_x]
type = MassMatrix
variable = disp_x
density = density
matrix_tags = 'mass'
[]
[Mass_y]
type = MassMatrix
variable = disp_y
density = density
matrix_tags = 'mass'
[]
[Mass_z]
type = MassMatrix
variable = disp_z
density = density
matrix_tags = 'mass'
[]
[gravity]
type = Gravity
variable = disp_z
value = -98.10
block = 1
[]
[]
[BCs]
[x_front]
type = ExplicitDirichletBC
variable = disp_x
boundary = 'ball_front'
value = 0.0
[]
[y_front]
type = ExplicitDirichletBC
variable = disp_y
boundary = 'ball_front'
value = 0.0
[]
[x_fixed]
type = ExplicitDirichletBC
variable = disp_x
boundary = 'base_back'
value = 0.0
[]
[y_fixed]
type = ExplicitDirichletBC
variable = disp_y
boundary = 'base_back'
value = 0.0
[]
[z_fixed]
type = ExplicitDirichletBC
variable = disp_z
boundary = 'base_back'
value = 0.0
[]
[z_fixed_front]
type = ExplicitDirichletBC
variable = disp_z
boundary = 'base_front'
value = 0.0
[]
[]
[ExplicitDynamicsContact]
[my_contact]
model = frictionless_balance
primary = base_front
secondary = ball_back
vel_x = 'vel_x'
vel_y = 'vel_y'
vel_z = 'vel_z'
verbose = true
[]
[]
[Materials]
[elasticity_tensor_block_one]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e6
poissons_ratio = 0.0
block = 1
outputs = 'exodus'
output_properties = __all__
[]
[elasticity_tensor_block_two]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e10
poissons_ratio = 0.0
block = 2
outputs = 'exodus'
output_properties = __all__
[]
[strain_block]
type = ComputeFiniteStrain # ComputeIncrementalStrain
displacements = 'disp_x disp_y disp_z'
implicit = false
[]
[stress_block]
type = ComputeFiniteStrainElasticStress
[]
[density_one]
type = GenericConstantMaterial
prop_names = density
prop_values = 1e1
outputs = 'exodus'
output_properties = 'density'
block = '1'
[]
[density_two]
type = GenericConstantMaterial
prop_names = density
prop_values = 1e6
outputs = 'exodus'
output_properties = 'density'
block = '2'
[]
[wave_speed]
type = WaveSpeed
outputs = 'exodus'
output_properties = 'wave_speed'
[]
[]
[Executioner]
type = Transient
start_time = 0
end_time = 0.05
dt = 1.0e-4
timestep_tolerance = 1e-6
[TimeIntegrator]
type = ExplicitMixedOrder
mass_matrix_tag = 'mass'
second_order_vars = 'disp_x disp_y disp_z'
[]
[]
[Outputs]
interval = 1
exodus = true
csv = true
execute_on = 'TIMESTEP_END'
[]
[Postprocessors]
[accel_58z]
type = NodalVariableValue
nodeid = 1
variable = accel_z
[]
[vel_58z]
type = NodalVariableValue
nodeid = 1
variable = vel_z
[]
[critical_time_step]
type = CriticalTimeStep
[]
[contact_pressure_max]
type = NodalExtremeValue
variable = contact_pressure
block = '1 2'
value_type = max
[]
[penetration_max]
type = NodalExtremeValue
variable = penetration
block = '1 2'
value_type = max
[]
[total_kinetic_energy_one]
type = ElementIntegralVariablePostprocessor
variable = kinetic_energy_one
block = '1'
[]
[total_elastic_energy_one]
type = ElementIntegralVariablePostprocessor
variable = elastic_energy_one
block = '1'
[]
[total_kinetic_energy_two]
type = ElementIntegralVariablePostprocessor
variable = kinetic_energy_two
block = '2'
[]
[total_elastic_energy_two]
type = ElementIntegralVariablePostprocessor
variable = elastic_energy_two
block = '2'
[]
[]