TetrahedralTensorMassForceField

Linear Elastic Tetrahedral Mesh

Vec3d

Templates:

• Vec3d

Target: Sofa.Component.SolidMechanics.TensorMass

namespace: sofa::component::solidmechanics::tensormass

parents:

• ForceField

Data

Name	Description	Default value
name	object name	unnamed
printLog	if true, emits extra messages at runtime.	0
tags	list of the subsets the object belongs to
bbox	this object bounding box
componentState	The state of the component among (Dirty, Valid, Undefined, Loading, Invalid).	Undefined
listening	if true, handle the events, otherwise ignore the events	0
rayleighStiffness	Rayleigh damping - stiffness matrix coefficient	0
poissonRatio	Poisson ratio in Hooke's law	0.3
youngModulus	Young's modulus in Hooke's law	1000
edgeInfo	Internal edge data

Links

Name	Description	Destination type name
context	Graph Node containing this object (or BaseContext::getDefault() if no graph is used)	BaseContext
slaves	Sub-objects used internally by this object	BaseComponent
master	nullptr for regular objects, or master object for which this object is one sub-objects	BaseComponent
mechanicalStates	List of mechanical states to which this component is associated	BaseMechanicalState
mstate	MechanicalState used by this component	MechanicalState<Vec3d>
topology	link to the topology container	BaseMeshTopology

Examples

TetrahedralTensorMassForceField.scn

XMLPython

<Node name="root">
    <Node name="plugins">
        <RequiredPlugin pluginName="Sofa.Component.Constraint.Projective"/> <!-- Needed to use components [FixedProjectiveConstraint] -->
        <RequiredPlugin pluginName="Sofa.Component.Engine.Select"/> <!-- Needed to use components [BoxROI] -->
        <RequiredPlugin pluginName="Sofa.Component.LinearSolver.Direct"/> <!-- Needed to use components [EigenSimplicialLDLT] -->
        <RequiredPlugin pluginName="Sofa.Component.Mapping.Linear"/> <!-- Needed to use components [IdentityMapping] -->
        <RequiredPlugin pluginName="Sofa.Component.Mass"/> <!-- Needed to use components [UniformMass] -->
        <RequiredPlugin pluginName="Sofa.Component.IntegrationScheme.Backward"/> <!-- Needed to use components [EulerImplicitIntegrationScheme] -->
        <RequiredPlugin pluginName="Sofa.Component.SolidMechanics.TensorMass"/> <!-- Needed to use components [TetrahedralTensorMassForceField] -->
        <RequiredPlugin pluginName="Sofa.Component.StateContainer"/> <!-- Needed to use components [MechanicalObject] -->
        <RequiredPlugin pluginName="Sofa.Component.Topology.Container.Dynamic"/> <!-- Needed to use components [QuadSetGeometryAlgorithms QuadSetTopologyContainer QuadSetTopologyModifier TetrahedronSetGeometryAlgorithms TetrahedronSetTopologyContainer TetrahedronSetTopologyModifier] -->
        <RequiredPlugin pluginName="Sofa.Component.Topology.Container.Grid"/> <!-- Needed to use components [RegularGridTopology] -->
        <RequiredPlugin pluginName="Sofa.Component.Topology.Mapping"/> <!-- Needed to use components [Hexa2QuadTopologicalMapping Hexa2TetraTopologicalMapping] -->
        <RequiredPlugin pluginName="Sofa.Component.Visual"/> <!-- Needed to use components [VisualStyle] -->
        <RequiredPlugin pluginName="Sofa.GL.Component.Rendering3D"/> <!-- Needed to use components [OglModel] -->
    </Node>

    <VisualStyle displayFlags="showBehaviorModels showForceFields" />

    <DefaultAnimationLoop name="animationLoop"/>
    <DefaultVisualManagerLoop name="visualLoop"/>

    <EulerImplicitIntegrationScheme name="odesolver" rayleighStiffness="0.1" rayleighMass="0.1" />
    <EigenSimplicialLDLT template="CompressedRowSparseMatrixMat3x3"/>
    <MechanicalObject name="DoFs" />
    <UniformMass name="mass" totalMass="320" />
    <RegularGridTopology name="grid" nx="4" ny="4" nz="20" xmin="-9" xmax="-6" ymin="0" ymax="3" zmin="0" zmax="19" />
    <BoxROI name="box" box="-10 -1 -0.0001  -5 4 0.0001"/>
    <FixedProjectiveConstraint indices="@box.indices" />

    <TetrahedronSetTopologyContainer name="Tetra_topo"/>
    <TetrahedronSetTopologyModifier name="Modifier" />
    <TetrahedronSetGeometryAlgorithms template="Vec3" name="GeomAlgo" />
    <Hexa2TetraTopologicalMapping input="@grid" output="@Tetra_topo" swapping="true"/>
    <TetrahedralTensorMassForceField name="deformable" youngModulus="100000" poissonRatio="0.4" />

    <Node name="quads">
        <QuadSetTopologyContainer  name="Container" />
        <QuadSetTopologyModifier   name="Modifier" />
        <QuadSetGeometryAlgorithms name="GeomAlgo" template="Vec3" />
        <Hexa2QuadTopologicalMapping input="@../grid" output="@Container" />
        <Node name="Visu">
            <OglModel name="Visual" color="yellow" />
            <IdentityMapping input="@../../DoFs" output="@Visual" />
        </Node>
    </Node>
</Node>

def createScene(root_node):

   root = root_node.addChild('root')

   plugins = root.addChild('plugins')

   plugins.addObject('RequiredPlugin', pluginName="Sofa.Component.Constraint.Projective")
   plugins.addObject('RequiredPlugin', pluginName="Sofa.Component.Engine.Select")
   plugins.addObject('RequiredPlugin', pluginName="Sofa.Component.LinearSolver.Direct")
   plugins.addObject('RequiredPlugin', pluginName="Sofa.Component.Mapping.Linear")
   plugins.addObject('RequiredPlugin', pluginName="Sofa.Component.Mass")
   plugins.addObject('RequiredPlugin', pluginName="Sofa.Component.IntegrationScheme.Backward")
   plugins.addObject('RequiredPlugin', pluginName="Sofa.Component.SolidMechanics.TensorMass")
   plugins.addObject('RequiredPlugin', pluginName="Sofa.Component.StateContainer")
   plugins.addObject('RequiredPlugin', pluginName="Sofa.Component.Topology.Container.Dynamic")
   plugins.addObject('RequiredPlugin', pluginName="Sofa.Component.Topology.Container.Grid")
   plugins.addObject('RequiredPlugin', pluginName="Sofa.Component.Topology.Mapping")
   plugins.addObject('RequiredPlugin', pluginName="Sofa.Component.Visual")
   plugins.addObject('RequiredPlugin', pluginName="Sofa.GL.Component.Rendering3D")

   root.addObject('VisualStyle', displayFlags="showBehaviorModels showForceFields")
   root.addObject('DefaultAnimationLoop', name="animationLoop")
   root.addObject('DefaultVisualManagerLoop', name="visualLoop")
   root.addObject('EulerImplicitIntegrationScheme', name="odesolver", rayleighStiffness="0.1", rayleighMass="0.1")
   root.addObject('EigenSimplicialLDLT', template="CompressedRowSparseMatrixMat3x3")
   root.addObject('MechanicalObject', name="DoFs")
   root.addObject('UniformMass', name="mass", totalMass="320")
   root.addObject('RegularGridTopology', name="grid", nx="4", ny="4", nz="20", xmin="-9", xmax="-6", ymin="0", ymax="3", zmin="0", zmax="19")
   root.addObject('BoxROI', name="box", box="-10 -1 -0.0001  -5 4 0.0001")
   root.addObject('FixedProjectiveConstraint', indices="@box.indices")
   root.addObject('TetrahedronSetTopologyContainer', name="Tetra_topo")
   root.addObject('TetrahedronSetTopologyModifier', name="Modifier")
   root.addObject('TetrahedronSetGeometryAlgorithms', template="Vec3", name="GeomAlgo")
   root.addObject('Hexa2TetraTopologicalMapping', input="@grid", output="@Tetra_topo", swapping="true")
   root.addObject('TetrahedralTensorMassForceField', name="deformable", youngModulus="100000", poissonRatio="0.4")

   quads = root.addChild('quads')

   quads.addObject('QuadSetTopologyContainer', name="Container")
   quads.addObject('QuadSetTopologyModifier', name="Modifier")
   quads.addObject('QuadSetGeometryAlgorithms', name="GeomAlgo", template="Vec3")
   quads.addObject('Hexa2QuadTopologicalMapping', input="@../grid", output="@Container")

   visu = quads.addChild('Visu')

   visu.addObject('OglModel', name="Visual", color="yellow")
   visu.addObject('IdentityMapping', input="@../../DoFs", output="@Visual")