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GluedContactConstraint

under construction:Undocumented Class

The GluedContactConstraint has not been documented. The content contained on this page includes the basic documentation associated with a MooseObject; however, what is contained is ultimately determined by what is necessary to make the documentation clear for users.

!syntax description /Constraints/GluedContactConstraint

Input Parameters

nodal_areaThe nodal area
C++ Type:std::vector
Options:
Description:The nodal area
slaveThe slave boundary
C++ Type:BoundaryName
Options:
Description:The slave boundary
componentAn integer corresponding to the direction the variable this kernel acts in. (0 for x, 1 for y, 2 for z)
C++ Type:unsigned int
Options:
Description:An integer corresponding to the direction the variable this kernel acts in. (0 for x, 1 for y, 2 for z)
master_variableThe variable on the master side of the domain
C++ Type:std::vector
Options:
Description:The variable on the master side of the domain
masterThe boundary ID associated with the master side
C++ Type:BoundaryName
Options:
Description:The boundary ID associated with the master side
variableThe name of the variable that this constraint is applied to.
C++ Type:NonlinearVariableName
Options:
Description:The name of the variable that this constraint is applied to.
boundaryThe master boundary
C++ Type:BoundaryName
Options:
Description:The master boundary

Required Parameters

disp_zThe z displacement
C++ Type:std::vector
Options:
Description:The z displacement
disp_yThe y displacement
C++ Type:std::vector
Options:
Description:The y displacement
disp_xThe x displacement
C++ Type:std::vector
Options:
Description:The x displacement
tension_release0Tension release threshold. A node in contact will not be released if its tensile load is below this value. Must be positive.
Default:0
C++ Type:double
Options:
Description:Tension release threshold. A node in contact will not be released if its tensile load is below this value. Must be positive.
normal_smoothing_distanceDistance from edge in parametric coordinates over which to smooth contact normal
C++ Type:double
Options:
Description:Distance from edge in parametric coordinates over which to smooth contact normal
penalty1e+08The penalty to apply. This can vary depending on the stiffness of your materials
Default:1e+08
C++ Type:double
Options:
Description:The penalty to apply. This can vary depending on the stiffness of your materials
normal_smoothing_methodMethod to use to smooth normals (edge_based|nodal_normal_based)
C++ Type:std::string
Options:
Description:Method to use to smooth normals (edge_based|nodal_normal_based)
tangential_toleranceTangential distance to extend edges of contact surfaces
C++ Type:double
Options:
Description:Tangential distance to extend edges of contact surfaces
friction_coefficient0The friction coefficient
Default:0
C++ Type:double
Options:
Description:The friction coefficient
formulationdefaultThe contact formulation
Default:default
C++ Type:std::string
Options:
Description:The contact formulation
execute_onLINEARThe list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, FINAL, CUSTOM.
Default:LINEAR
C++ Type:ExecFlagEnum
Options:NONE INITIAL LINEAR NONLINEAR TIMESTEP_END TIMESTEP_BEGIN FINAL CUSTOM
Description:The list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, FINAL, CUSTOM.
modelfrictionlessThe contact model to use
Default:frictionless
C++ Type:std::string
Options:
Description:The contact model to use
orderFIRSTThe finite element order
Default:FIRST
C++ Type:MooseEnum
Options:CONSTANT FIRST SECOND THIRD FOURTH
Description:The finite element order
displacementsThe displacements appropriate for the simulation geometry and coordinate system
C++ Type:std::vector
Options:
Description:The displacements appropriate for the simulation geometry and coordinate system

Optional Parameters

control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector
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.
use_displaced_meshTrueWhether 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:True
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

Input Files

modules/combined/test/tests/glued_contact_constraint/glued_contact_constraint.i

modules/combined/test/tests/glued_contact_constraint/glued_contact_constraint.i

[Mesh]
  type = FileMesh
  file = simplest_contact.e
[]

[GlobalParams]
  displacements = 'disp_x disp_y'
[]

[Variables]
  [./disp_x]
  [../]
  [./disp_y]
  [../]
[]

[AuxVariables]
  [./penetration]
  [../]
[]

[SolidMechanics]
  [./solid]
    disp_x = disp_x
    disp_y = disp_y
  [../]
[]

[AuxKernels]
  [./penetration]
    type = PenetrationAux
    variable = penetration
    boundary = 2
    paired_boundary = 3
  [../]
[]

[Constraints]
  [./contact_x]
    type = GluedContactConstraint
    variable = disp_x
    master_variable = disp_x
    component = 0
    slave = 2
    master = 3
    penalty = 1e6
    nodal_area = penetration
    boundary = 2
  [../]
  [./contact_y]
    type = GluedContactConstraint
    variable = disp_y
    master_variable = disp_y
    component = 1
    slave = 2
    master = 3
    penalty = 1e6
    nodal_area = penetration
    boundary = 3
  [../]
[]

[BCs]
  [./left_x]
    type = DirichletBC
    variable = disp_x
    boundary = 1
    value = 0.0
  [../]
  [./left_y]
    type = DirichletBC
    variable = disp_y
    boundary = 1
    value = 0.0
  [../]
  [./right_x]
    type = PresetBC
    variable = disp_x
    boundary = 4
    value = -0.0001
  [../]
  [./right_y]
    type = DirichletBC
    variable = disp_y
    boundary = 4
    value = 0.0
  [../]
[]

[Materials]
  [./stiffStuff1]
    type = LinearIsotropicMaterial
    block = 1
    disp_x = disp_x
    disp_y = disp_y
    youngs_modulus = 1e6
    poissons_ratio = 0.3
  [../]
[]

[Executioner]
  type = Transient
  solve_type = PJFNK
  petsc_options_iname = '-pc_type -pc_hypre_type -ksp_gmres_restart'
  petsc_options_value = 'hypre    boomeramg      101'
  line_search = none
  nl_abs_tol = 1e-8
  l_max_its = 100
  nl_max_its = 10
  dt = 1.0
  num_steps = 1
[]

[Outputs]
  file_base = out
  [./exodus]
    type = Exodus
    elemental_as_nodal = true
  [../]
[]

References

Input Parameters
Input Files
References

Application Usage

Physics and Syntax

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