- mesh_fileMesh file for the XFEM geometric cut; currently only the xda type is supported
C++ Type:MeshFileName
Controllable:No
Description:Mesh file for the XFEM geometric cut; currently only the xda type is supported
CrackMeshCut3DUserObject
Creates a UserObject for a mesh cutter in 3D problems
Overview
This class: (1) reads in a mesh describing the crack surface, (2) uses the mesh to do initial cutting of 3D elements, and (3) grows the mesh incrementally based on prescribed growth functions. The code is interfaced with domain integral methods to allow nonplanar crack growth based on empirical propagation direction and speed laws.
Example Input Syntax
[UserObjects]
[./cut_mesh]
type = CrackMeshCut3DUserObject
mesh_file = mesh_edge_crack.xda
growth_dir_method = 'function'
size_control = 0.1
n_step_growth = 1
function_x = growth_func_x
function_y = growth_func_y
function_z = growth_func_z
function_v = growth_func_v
[../]
[]
Input Parameters
- 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
- crack_front_nodesSet of nodes to define crack front
C++ Type:std::vector<unsigned long>
Controllable:No
Description:Set of nodes to define crack front
- execute_onXFEM_MARKThe 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, ALWAYS, XFEM_MARK.
Default:XFEM_MARK
C++ Type:ExecFlagEnum
Controllable:No
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, ALWAYS, XFEM_MARK.
- function_vGrowth speed function
C++ Type:FunctionName
Controllable:No
Description:Growth speed function
- function_xGrowth function for x direction
C++ Type:FunctionName
Controllable:No
Description:Growth function for x direction
- function_yGrowth function for y direction
C++ Type:FunctionName
Controllable:No
Description:Growth function for y direction
- function_zGrowth function for z direction
C++ Type:FunctionName
Controllable:No
Description:Growth function for z direction
- growth_dir_methodfunctionchoose from function, max_hoop_stress
Default:function
C++ Type:std::string
Controllable:No
Description:choose from function, max_hoop_stress
- growth_speed_methodfunctionchoose from function, fatigue
Default:function
C++ Type:std::string
Controllable:No
Description:choose from function, fatigue
- heal_alwaysFalseHeal previous cuts at every time step
Default:False
C++ Type:bool
Controllable:No
Description:Heal previous cuts at every time step
- n_step_growth0Number of steps for crack growth
Default:0
C++ Type:unsigned int
Controllable:No
Description:Number of steps for crack growth
- 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
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.
- size_control0Criterion for refining elements while growing the crack
Default:0
C++ Type:double
Controllable:No
Description:Criterion for refining elements while growing the crack
Optional Parameters
- allow_duplicate_execution_on_initialFalseIn the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).
Default:False
C++ Type:bool
Controllable:No
Description:In the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).
- 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.
- force_postauxFalseForces the UserObject to be executed in POSTAUX
Default:False
C++ Type:bool
Controllable:No
Description:Forces the UserObject to be executed in POSTAUX
- force_preauxFalseForces the UserObject to be executed in PREAUX
Default:False
C++ Type:bool
Controllable:No
Description:Forces the UserObject to be executed in PREAUX
- force_preicFalseForces the UserObject to be executed in PREIC during initial setup
Default:False
C++ Type:bool
Controllable:No
Description:Forces the UserObject to be executed in PREIC during initial setup
- 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.