MoveNodeGenerator

Modifies the position of one or more nodes

Overview

This MeshGenerator object allows the user to Move one or more nodes' locations on an existing mesh.

The user has to provide the ids the nodes to be modified, as well as the new positions for each node.

Input Parameters

inputInput mesh to Move
C++ Type:MeshGeneratorName
Controllable:No
Description:Input mesh to Move
new_positionNew position in vector space
C++ Type:std::vector<libMesh::Point>
Controllable:No
Description:New position in vector space
node_idId of modified node
C++ Type:std::vector<unsigned long>
Controllable:No
Description:Id of modified node

Required Parameters

show_infoFalseWhether or not to show mesh info after generating the mesh (bounding box, element types, sidesets, nodesets, subdomains, etc)
Default:False
C++ Type:bool
Controllable:No
Description:Whether or not to show mesh info after generating the mesh (bounding box, element types, sidesets, nodesets, subdomains, etc)

Optional 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:No
Description:Set the enabled status of the MooseObject.

Advanced Parameters

Input Files

(modules/tensor_mechanics/test/tests/pressure/cantilever.i)
(modules/tensor_mechanics/test/tests/pressure/ring.i)
(test/tests/meshgenerators/move_node_generator/test.i)
(test/tests/meshgenerators/move_node_generator/test2.i)

(modules/tensor_mechanics/test/tests/pressure/cantilever.i)

#
#
#

[GlobalParams]
  displacements = 'disp_x disp_y disp_z'
[]

[Mesh]
  [MeshGenerator]
    type = GeneratedMeshGenerator
    dim = 3
    nx = 1
    xmin = 0
    xmax = 10
    ymin = 0
    ymax = 1
    zmin = 0
    zmax = 1
  []
  [move_nodes]
    type = MoveNodeGenerator
    input = MeshGenerator
    node_id = 6
    new_position = '9.9 1.1 1'
  []
[]

[Functions]
  [pressure]
    type = ParsedFunction
    value = 100*t
  []
[]

[Variables]
  [disp_x]
  []
  [disp_y]
  []
  [disp_z]
  []
[]

[Kernels]
  [TensorMechanics]
  []
[]

[BCs]
  [no_x]
    type = DirichletBC
    variable = disp_x
    boundary = left
    value = 0.0
  []
  [no_y]
    type = DirichletBC
    variable = disp_y
    boundary = left
    value = 0.0
  []
  [no_z]
    type = DirichletBC
    variable = disp_z
    boundary = left
    value = 0.0
  []
  [Pressure]
    [top]
      boundary = 'top front right'
      function = pressure
    []
  []
[]

[Materials]
  [Elasticity_tensor]
    type = ComputeElasticityTensor
    fill_method = symmetric_isotropic
    C_ijkl = '0 0.5e6'
  []
  [strain]
    type = ComputeSmallStrain
  []
  [stress]
    type = ComputeLinearElasticStress
  []
[]

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

[Executioner]
  type = Transient
  solve_type = NEWTON
  petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
  petsc_options_value = 'lu superlu_dist'
  petsc_options = '-snes_test_jacobian -snes_test_jacobian_view'
  nl_abs_tol = 1e-10
  l_max_its = 20
  start_time = 0.0
  dt = 1.0
  num_steps = 10
  end_time = 2.0
[]

[Outputs]
  [out]
    type = Exodus
  []
[]

(modules/tensor_mechanics/test/tests/pressure/ring.i)

#
#
#

[GlobalParams]
  displacements = 'disp_x disp_y'
[]

[Mesh]
  [MeshGenerator]
    type = GeneratedMeshGenerator
    dim = 2
    nx = 1 #10
    ny = 1
    xmin = 1.0
    xmax = 1.1
  []
  [move_nodes]
    type = MoveNodeGenerator
    input = MeshGenerator
    node_id = '0 2'
    new_position = '0.9 0.1 0 1.125 1.025 0'
  []
  [rotate]
    type = TransformGenerator
    input = move_nodes
    transform = rotate
    vector_value = '-20 0 0'
  []
[]

[Problem]
  coord_type = RZ
[]

[Functions]
  [pressure]
    type = ParsedFunction
    value = 100*t
  []
[]

[Variables]
  [disp_x]
  []
  [disp_y]
  []
[]

[Modules]
  [TensorMechanics]
    [Master]
      [all]
        incremental = false
      []
    []
  []
[]

[BCs]
  [no_y]
    type = DirichletBC
    variable = disp_y
    boundary = bottom
    value = 0.0
  []
  [Pressure]
    [pressure]
      boundary = 'right'
      function = pressure
    []
  []
  # [pull_x]
  #   type = DirichletBC
  #   variable = disp_x
  #   boundary = left
  #   value = 1e-5
  #   preset = false
  # []
[]

[Materials]
  [Elasticity_tensor]
    type = ComputeElasticityTensor
    fill_method = symmetric_isotropic
    C_ijkl = '0 0.5e6'
  []
#  [strain]
#    type = ComputeSmallStrain
#  []
  [stress]
    type = ComputeLinearElasticStress
  []
[]

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

[Executioner]
  type = Transient
  solve_type = NEWTON
  petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
  petsc_options_value = 'lu superlu_dist'
  petsc_options = '-snes_test_jacobian -snes_test_jacobian_view'
  nl_abs_tol = 1e-10
  l_max_its = 20
  start_time = 0.0
  dt = 1.0
  num_steps = 10
  end_time = 2.0
[]

[Outputs]
  [out]
    type = Exodus
  []
[]

(test/tests/meshgenerators/move_node_generator/test.i)

[Mesh]
  [./eg]
    type = ElementGenerator
    nodal_positions = '0 0 0
                       1 0 0
                       1 1 0'

    element_connectivity = '0 1 2'
    elem_type = "TRI3"
  []
  [modifyNode]
    type = MoveNodeGenerator
    input = eg
    node_id = '0 1 2'
    new_position = '-1 0 0
                     0 1 0
                     0 2 0'
  []
[]

[Outputs]
  exodus = true
[]

(test/tests/meshgenerators/move_node_generator/test2.i)

[Mesh]
  allow_renumbering=false
  inactive = 'missingNode mismatchSize'
  [./eg]
    type = CartesianMeshGenerator
    dim = 3
    dx = '1'
    dy = '1'
    dz = '1'
    ix = '4'
    iy = '4'
    iz = '4'
    subdomain_id = '0'
  []
  [modifyNode]
    type = MoveNodeGenerator
    input = eg
    node_id = '0 1 2'
    new_position = '0.1 0 0
                    0.35 0 0
                    0.6 0 0'
  []
  [missingNode]
    type = MoveNodeGenerator
    input = eg
    node_id = '999'
    new_position = '0.1 0 0'
  []
  [mismatchSize]
    type = MoveNodeGenerator
    input = eg
    node_id = '0 1 2'
    new_position = '0.1 0 0'
  []
[]

[Variables]
  [u]
  []
[]

[Kernels]
  [diff]
    type = Diffusion
    variable = u
  []
[]

[BCs]
  [left]
    type = DirichletBC
    variable = u
    boundary = left
    value = 0
  []
  [right]
    type = DirichletBC
    variable = u
    boundary = right
    value = 1
  []
[]

[Executioner]
  type = Steady
  solve_type = 'PJFNK'
  petsc_options_iname = '-pc_type -pc_hypre_type'
  petsc_options_value = 'hypre boomeramg'
[]

[Outputs]
  exodus = true
[]

Overview
Input Parameters
Input Files

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