ConcreteDryingShrinkage

This material represents the eigenstrains induced by drying in concrete. The shrinkage strain $var element = document.getElementById("moose-equation-31cfb07f-f428-40f6-904c-8673e36b4d81");katex.render("\\epsilon_{sh}", element, {displayMode:false,throwOnError:false});$ is calculated as: $var element = document.getElementById("moose-equation-c1317b87-a6b6-4e39-8b67-bcdee9f24926");katex.render("\\epsilon_{sh} = -k_{sh} (1 - h)^d", element, {displayMode:true,throwOnError:false});$ where $var element = document.getElementById("moose-equation-152ec0a3-22c7-44b3-853c-842f0d6a1f61");katex.render("k_{sh}", element, {displayMode:false,throwOnError:false});$ is the drying_shrinkage_coefficient (which must be positive), $var element = document.getElementById("moose-equation-4d53160c-9d63-4bde-9372-7ccf62883f22");katex.render("h", element, {displayMode:false,throwOnError:false});$ the relative humidity (a MOOSE variable which value must range between 0 and 1), and $var element = document.getElementById("moose-equation-cc9a29aa-6601-4c66-ae41-bb30ea9273d2");katex.render("d", element, {displayMode:false,throwOnError:false});$ a positive exponent (typically equal to 1). The drying shrinkage is isotropic and reversible.

It can be set partially irreversible by defining the irreversibility_threshold, in which case the shrinkage strain caused by relative humidity lower than that threshold will be deemed irreversible and not recovered upon rewetting.

Description

Computes concrete drying shrinkage

Input Parameters

eigenstrain_nameMaterial property name for the eigenstrain tensor computed by this model. IMPORTANT: The name of this property must also be provided to the strain calculator.
C++ Type:std::string
Options:
Description:Material property name for the eigenstrain tensor computed by this model. IMPORTANT: The name of this property must also be provided to the strain calculator.
humidityrelative humidity
C++ Type:std::vector<VariableName>
Options:
Description:relative humidity

Required Parameters

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
Options:
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 block ids (SubdomainID) that this object will be applied
C++ Type:std::vector<SubdomainName>
Options:
Description:The list of block ids (SubdomainID) that this object will be applied
boundaryThe list of boundary IDs from the mesh where this boundary condition applies
C++ Type:std::vector<BoundaryName>
Options:
Description:The list of boundary IDs from the mesh where this boundary condition 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
Options:
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
Options:NONE, ELEMENT, SUBDOMAIN
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
drying_shrinkage_coefficienttotal shrinkage at 0 relative humidity
C++ Type:double
Options:
Description:total shrinkage at 0 relative humidity
exponent1exponent of the shrinkage law, default: 1
Default:1
C++ Type:double
Options:
Description:exponent of the shrinkage law, default: 1
irreversibility_thresholdhumidity below which shrinkage becomes irreversible
C++ Type:double
Options:
Description:humidity below which shrinkage becomes irreversible

Optional Parameters

control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Options:
Description:Adds user-defined labels for accessing object parameters via control logic.
enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Options:
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
Options:
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
Options:
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
Options:
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>
Options:
Description:List of material properties, from this material, to output (outputs must also be defined to an output type)
outputsnone Vector of output names were you would like to restrict the output of variables(s) associated with this object
Default:none
C++ Type:std::vector<OutputName>
Options:
Description:Vector of output names were you would like to restrict the output of variables(s) associated with this object

Outputs Parameters

Input Files

(test/tests/concrete_drying_shrinkage/shrinkage_quad.i)
(test/tests/concrete_drying_shrinkage/shrinkage_irreversible.i)
(test/tests/concrete_drying_shrinkage/shrinkage.i)

(test/tests/concrete_drying_shrinkage/shrinkage_quad.i)

[Mesh]
  type = GeneratedMesh
  dim = 3
  nx = 1
  ny = 1
  nz = 1
  elem_type = HEX8
  displacements = 'disp_x disp_y disp_z'
[]

[Variables]
  [./disp_x]
    order = FIRST
    family = LAGRANGE
  [../]
  [./disp_y]
    order = FIRST
    family = LAGRANGE
  [../]
  [./disp_z]
    order = FIRST
    family = LAGRANGE
  [../]
[]

[Functions]
  [./h_function]
    type = PiecewiseLinear
    x = '0 10 20'
    y = '1 0 1'
  [../]
[]

[AuxVariables]
  [./h]
    order = FIRST
    family = LAGRANGE
  [../]
  [./stress_xx]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./stress_yy]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./stress_zz]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./strain_xx]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./strain_yy]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./strain_zz]
    order = CONSTANT
    family = MONOMIAL
  [../]
[]

[Kernels]
  [./TensorMechanics]
    displacements = 'disp_x disp_y disp_z'
    use_displaced_mesh = true
  [../]
[]

[AuxKernels]
  [./humidity]
    type = FunctionAux
    variable = h
    function = h_function
  [../]
  [./stress_xx]
    type = RankTwoAux
    variable = stress_xx
    rank_two_tensor = stress
    index_j = 0
    index_i = 0
    execute_on = timestep_end
  [../]
  [./stress_yy]
    type = RankTwoAux
    variable = stress_yy
    rank_two_tensor = stress
    index_j = 1
    index_i = 1
    execute_on = timestep_end
  [../]
  [./stress_zz]
    type = RankTwoAux
    variable = stress_zz
    rank_two_tensor = stress
    index_j = 2
    index_i = 2
    execute_on = timestep_end
  [../]
  [./strain_xx]
    type = RankTwoAux
    variable = strain_xx
    rank_two_tensor = total_strain
    index_j = 0
    index_i = 0
    execute_on = timestep_end
  [../]
  [./strain_yy]
    type = RankTwoAux
    variable = strain_yy
    rank_two_tensor = total_strain
    index_j = 1
    index_i = 1
    execute_on = timestep_end
  [../]
  [./strain_zz]
    type = RankTwoAux
    variable = strain_zz
    rank_two_tensor = total_strain
    index_j = 2
    index_i = 2
    execute_on = timestep_end
  [../]
[]

[BCs]
  [./symmy]
    type = DirichletBC
    variable = disp_y
    boundary = bottom
    value = 0
  [../]
  [./symmx]
    type = DirichletBC
    variable = disp_x
    boundary = left
    value = 0
  [../]
  [./symmz]
    type = DirichletBC
    variable = disp_z
    boundary = back
    value = 0
  [../]
[]

[Materials]
  [./stress]
    type = ComputeLinearElasticStress
  [../]
  [./concrete]
    type = ComputeIsotropicElasticityTensor
    poissons_ratio = 0.2
    youngs_modulus = 30e9
  [../]
  [./RIVE]
    type = ConcreteDryingShrinkage
    eigenstrain_name = shrinkage
    humidity = h
    drying_shrinkage_coefficient = -0.3e-3
    exponent = 2
  [../]
  [./strain]
    type = ComputeSmallStrain
    displacements = 'disp_x disp_y disp_z'
    eigenstrain_names = shrinkage
  [../]
[]

[Postprocessors]
  [./stress_xx]
    type = ElementAverageValue
    variable = stress_xx
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./stress_yy]
    type = ElementAverageValue
    variable = stress_yy
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./stress_zz]
    type = ElementAverageValue
    variable = stress_zz
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./strain_xx]
    type = ElementAverageValue
    variable = strain_xx
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./strain_yy]
    type = ElementAverageValue
    variable = strain_yy
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./strain_zz]
    type = ElementAverageValue
    variable = strain_zz
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./humidity]
    type = ElementAverageValue
    variable = h
    block = 'ANY_BLOCK_ID 0'
  [../]
[]

[Preconditioning]
  [./smp]
    type = SMP
    full = true
  [../]
[]

[Executioner]
  type = Transient

  #Preconditioned JFNK (default)
  solve_type = 'PJFNK'

  l_max_its  = 50
  l_tol      = 1e-6
  nl_max_its = 20
  nl_rel_tol = 1e-10
  nl_abs_tol = 1e-6

  end_time = 20
  dt = 1
[]

[Outputs]
  file_base = shrinkage_quad_out
  exodus = true
[]

(test/tests/concrete_drying_shrinkage/shrinkage_irreversible.i)

[Mesh]
  type = GeneratedMesh
  dim = 3
  nx = 1
  ny = 1
  nz = 1
  elem_type = HEX8
  displacements = 'disp_x disp_y disp_z'
[]

[Variables]
  [./disp_x]
    order = FIRST
    family = LAGRANGE
  [../]
  [./disp_y]
    order = FIRST
    family = LAGRANGE
  [../]
  [./disp_z]
    order = FIRST
    family = LAGRANGE
  [../]
[]

[Functions]
  [./h_function]
    type = PiecewiseLinear
    x = '0 10 20'
    y = '1 0 1'
  [../]
[]

[AuxVariables]
  [./h]
    order = FIRST
    family = LAGRANGE
  [../]
  [./stress_xx]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./stress_yy]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./stress_zz]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./strain_xx]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./strain_yy]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./strain_zz]
    order = CONSTANT
    family = MONOMIAL
  [../]
[]

[Kernels]
  [./TensorMechanics]
    displacements = 'disp_x disp_y disp_z'
    use_displaced_mesh = true
  [../]
[]

[AuxKernels]
  [./humidity]
    type = FunctionAux
    variable = h
    function = h_function
  [../]
  [./stress_xx]
    type = RankTwoAux
    variable = stress_xx
    rank_two_tensor = stress
    index_j = 0
    index_i = 0
    execute_on = timestep_end
  [../]
  [./stress_yy]
    type = RankTwoAux
    variable = stress_yy
    rank_two_tensor = stress
    index_j = 1
    index_i = 1
    execute_on = timestep_end
  [../]
  [./stress_zz]
    type = RankTwoAux
    variable = stress_zz
    rank_two_tensor = stress
    index_j = 2
    index_i = 2
    execute_on = timestep_end
  [../]
  [./strain_xx]
    type = RankTwoAux
    variable = strain_xx
    rank_two_tensor = total_strain
    index_j = 0
    index_i = 0
    execute_on = timestep_end
  [../]
  [./strain_yy]
    type = RankTwoAux
    variable = strain_yy
    rank_two_tensor = total_strain
    index_j = 1
    index_i = 1
    execute_on = timestep_end
  [../]
  [./strain_zz]
    type = RankTwoAux
    variable = strain_zz
    rank_two_tensor = total_strain
    index_j = 2
    index_i = 2
    execute_on = timestep_end
  [../]
[]

[BCs]
  [./symmy]
    type = DirichletBC
    variable = disp_y
    boundary = bottom
    value = 0
  [../]
  [./symmx]
    type = DirichletBC
    variable = disp_x
    boundary = left
    value = 0
  [../]
  [./symmz]
    type = DirichletBC
    variable = disp_z
    boundary = back
    value = 0
  [../]
[]

[Materials]
  [./stress]
    type = ComputeLinearElasticStress
  [../]
  [./concrete]
    type = ComputeIsotropicElasticityTensor
    poissons_ratio = 0.2
    youngs_modulus = 30e9
  [../]
  [./RIVE]
    type = ConcreteDryingShrinkage
    eigenstrain_name = shrinkage
    humidity = h
    drying_shrinkage_coefficient = -0.3e-3
    exponent = 1
    irreversibility_threshold = 0.2
  [../]
  [./strain]
    type = ComputeSmallStrain
    displacements = 'disp_x disp_y disp_z'
    eigenstrain_names = shrinkage
  [../]
[]

[Postprocessors]
  [./stress_xx]
    type = ElementAverageValue
    variable = stress_xx
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./stress_yy]
    type = ElementAverageValue
    variable = stress_yy
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./stress_zz]
    type = ElementAverageValue
    variable = stress_zz
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./strain_xx]
    type = ElementAverageValue
    variable = strain_xx
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./strain_yy]
    type = ElementAverageValue
    variable = strain_yy
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./strain_zz]
    type = ElementAverageValue
    variable = strain_zz
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./humidity]
    type = ElementAverageValue
    variable = h
    block = 'ANY_BLOCK_ID 0'
  [../]
[]

[Preconditioning]
  [./smp]
    type = SMP
    full = true
  [../]
[]

[Executioner]
  type = Transient

  #Preconditioned JFNK (default)
  solve_type = 'PJFNK'

  l_max_its  = 50
  l_tol      = 1e-6
  nl_max_its = 20
  nl_rel_tol = 1e-10
  nl_abs_tol = 1e-6

  end_time = 20
  dt = 1
[]

[Outputs]
  file_base = shrinkage_irreversible_out
  exodus = true
[]

(test/tests/concrete_drying_shrinkage/shrinkage.i)

[Mesh]
  type = GeneratedMesh
  dim = 3
  nx = 1
  ny = 1
  nz = 1
  elem_type = HEX8
  displacements = 'disp_x disp_y disp_z'
[]

[Variables]
  [./disp_x]
    order = FIRST
    family = LAGRANGE
  [../]
  [./disp_y]
    order = FIRST
    family = LAGRANGE
  [../]
  [./disp_z]
    order = FIRST
    family = LAGRANGE
  [../]
[]

[Functions]
  [./h_function]
    type = PiecewiseLinear
    x = '0 10 20'
    y = '1 0 1'
  [../]
[]

[AuxVariables]
  [./h]
    order = FIRST
    family = LAGRANGE
  [../]
  [./stress_xx]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./stress_yy]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./stress_zz]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./strain_xx]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./strain_yy]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./strain_zz]
    order = CONSTANT
    family = MONOMIAL
  [../]
[]

[Kernels]
  [./TensorMechanics]
    displacements = 'disp_x disp_y disp_z'
    use_displaced_mesh = true
  [../]
[]

[AuxKernels]
  [./humidity]
    type = FunctionAux
    variable = h
    function = h_function
  [../]
  [./stress_xx]
    type = RankTwoAux
    variable = stress_xx
    rank_two_tensor = stress
    index_j = 0
    index_i = 0
    execute_on = timestep_end
  [../]
  [./stress_yy]
    type = RankTwoAux
    variable = stress_yy
    rank_two_tensor = stress
    index_j = 1
    index_i = 1
    execute_on = timestep_end
  [../]
  [./stress_zz]
    type = RankTwoAux
    variable = stress_zz
    rank_two_tensor = stress
    index_j = 2
    index_i = 2
    execute_on = timestep_end
  [../]
  [./strain_xx]
    type = RankTwoAux
    variable = strain_xx
    rank_two_tensor = total_strain
    index_j = 0
    index_i = 0
    execute_on = timestep_end
  [../]
  [./strain_yy]
    type = RankTwoAux
    variable = strain_yy
    rank_two_tensor = total_strain
    index_j = 1
    index_i = 1
    execute_on = timestep_end
  [../]
  [./strain_zz]
    type = RankTwoAux
    variable = strain_zz
    rank_two_tensor = total_strain
    index_j = 2
    index_i = 2
    execute_on = timestep_end
  [../]
[]

[BCs]
  [./symmy]
    type = DirichletBC
    variable = disp_y
    boundary = bottom
    value = 0
  [../]
  [./symmx]
    type = DirichletBC
    variable = disp_x
    boundary = left
    value = 0
  [../]
  [./symmz]
    type = DirichletBC
    variable = disp_z
    boundary = back
    value = 0
  [../]
[]

[Materials]
  [./stress]
    type = ComputeLinearElasticStress
  [../]
  [./concrete]
    type = ComputeIsotropicElasticityTensor
    poissons_ratio = 0.2
    youngs_modulus = 30e9
  [../]
  [./RIVE]
    type = ConcreteDryingShrinkage
    eigenstrain_name = shrinkage
    humidity = h
    drying_shrinkage_coefficient = -0.3e-3
    exponent = 1
  [../]
  [./strain]
    type = ComputeSmallStrain
    displacements = 'disp_x disp_y disp_z'
    eigenstrain_names = shrinkage
  [../]
[]

[Postprocessors]
  [./stress_xx]
    type = ElementAverageValue
    variable = stress_xx
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./stress_yy]
    type = ElementAverageValue
    variable = stress_yy
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./stress_zz]
    type = ElementAverageValue
    variable = stress_zz
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./strain_xx]
    type = ElementAverageValue
    variable = strain_xx
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./strain_yy]
    type = ElementAverageValue
    variable = strain_yy
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./strain_zz]
    type = ElementAverageValue
    variable = strain_zz
    block = 'ANY_BLOCK_ID 0'
  [../]
  [./humidity]
    type = ElementAverageValue
    variable = h
    block = 'ANY_BLOCK_ID 0'
  [../]
[]

[Preconditioning]
  [./smp]
    type = SMP
    full = true
  [../]
[]

[Executioner]
  type = Transient

  #Preconditioned JFNK (default)
  solve_type = 'PJFNK'

  l_max_its  = 50
  l_tol      = 1e-6
  nl_max_its = 20
  nl_rel_tol = 1e-10
  nl_abs_tol = 1e-10

  end_time = 20
  dt = 1
[]

[Outputs]
  file_base = shrinkage_out
  exodus = true
[]

Description
Input Parameters
Input Files