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TriangularTensorMassForceField

Linear Elastic Membrane on a Triangular Mesh

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 objet 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
isCompliance Consider the component as a compliance, else as a stiffness 0
rayleighStiffness Rayleigh damping - stiffness matrix coefficient 0
edgeInfo Internal edge data
poissonRatio Poisson ratio in Hooke's law 0.3
youngModulus Young's modulus in Hooke's law 1000

Links:

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

Examples

Component/SolidMechanics/TensorMass/TriangularTensorMassForceField.scn

<!-- TriangularTensorMassForceField Group Basic Example -->
<Node name="root" dt="0.005" showBoundingTree="0" gravity="0 -9 1">
    <RequiredPlugin name="Sofa.Component.Collision.Detection.Algorithm"/> <!-- Needed to use components [BVHNarrowPhase BruteForceBroadPhase CollisionPipeline] -->
    <RequiredPlugin name="Sofa.Component.Collision.Detection.Intersection"/> <!-- Needed to use components [MinProximityIntersection] -->
    <RequiredPlugin name="Sofa.Component.Collision.Geometry"/> <!-- Needed to use components [TriangleCollisionModel] -->
    <RequiredPlugin name="Sofa.Component.Collision.Response.Contact"/> <!-- Needed to use components [CollisionResponse] -->
    <RequiredPlugin name="Sofa.Component.Constraint.Projective"/> <!-- Needed to use components [FixedProjectiveConstraint] -->
    <RequiredPlugin name="Sofa.Component.IO.Mesh"/> <!-- Needed to use components [MeshGmshLoader] -->
    <RequiredPlugin name="Sofa.Component.LinearSolver.Iterative"/> <!-- Needed to use components [CGLinearSolver] -->
    <RequiredPlugin name="Sofa.Component.Mapping.Linear"/> <!-- Needed to use components [IdentityMapping] -->
    <RequiredPlugin name="Sofa.Component.Mass"/> <!-- Needed to use components [DiagonalMass] -->
    <RequiredPlugin name="Sofa.Component.ODESolver.Backward"/> <!-- Needed to use components [EulerImplicitSolver] -->
    <RequiredPlugin name="Sofa.Component.SolidMechanics.TensorMass"/> <!-- Needed to use components [TriangularTensorMassForceField] -->
    <RequiredPlugin name="Sofa.Component.StateContainer"/> <!-- Needed to use components [MechanicalObject] -->
    <RequiredPlugin name="Sofa.Component.Topology.Container.Dynamic"/> <!-- Needed to use components [TriangleSetGeometryAlgorithms TriangleSetTopologyContainer TriangleSetTopologyModifier] -->
    <RequiredPlugin name="Sofa.Component.Visual"/> <!-- Needed to use components [VisualStyle] -->
    <RequiredPlugin name="Sofa.GL.Component.Rendering3D"/> <!-- Needed to use components [OglModel] -->
    <VisualStyle displayFlags="showBehaviorModels showVisual" />
    <CollisionPipeline verbose="0" />
    <BruteForceBroadPhase/>
    <BVHNarrowPhase/>
    <CollisionResponse response="PenalityContactForceField" />
    <MinProximityIntersection name="Proximity" alarmDistance="0.8" contactDistance="0.5" />
    <DefaultAnimationLoop/>

    <Node name="SquareGravity">
        <EulerImplicitSolver name="cg_odesolver" printLog="false"  rayleighStiffness="0.1" rayleighMass="0.1" />
        <CGLinearSolver iterations="25" name="linear solver" tolerance="1.0e-9" threshold="1.0e-9" />
        <MeshGmshLoader name="loader" filename="mesh/square3.msh" createSubelements="true" />
        <MechanicalObject src="@loader" scale="10" />
        <include href="Objects/TriangleSetTopology.xml" src="@loader" />
        <DiagonalMass massDensity="0.015" />
        <FixedProjectiveConstraint indices="0 1" />
        <TriangularTensorMassForceField name="TM" youngModulus="15" poissonRatio="0.9" />
        <TriangleCollisionModel />
        <Node >
          <OglModel name="Visual" color="yellow" />
          <IdentityMapping input="@.." output="@Visual" />
        </Node>

    </Node>
</Node>

def createScene(rootNode):

    root = rootNode.addChild('root', dt="0.005", showBoundingTree="0", gravity="0 -9 1")
    root.addObject('RequiredPlugin', name="Sofa.Component.Collision.Detection.Algorithm")
    root.addObject('RequiredPlugin', name="Sofa.Component.Collision.Detection.Intersection")
    root.addObject('RequiredPlugin', name="Sofa.Component.Collision.Geometry")
    root.addObject('RequiredPlugin', name="Sofa.Component.Collision.Response.Contact")
    root.addObject('RequiredPlugin', name="Sofa.Component.Constraint.Projective")
    root.addObject('RequiredPlugin', name="Sofa.Component.IO.Mesh")
    root.addObject('RequiredPlugin', name="Sofa.Component.LinearSolver.Iterative")
    root.addObject('RequiredPlugin', name="Sofa.Component.Mapping.Linear")
    root.addObject('RequiredPlugin', name="Sofa.Component.Mass")
    root.addObject('RequiredPlugin', name="Sofa.Component.ODESolver.Backward")
    root.addObject('RequiredPlugin', name="Sofa.Component.SolidMechanics.TensorMass")
    root.addObject('RequiredPlugin', name="Sofa.Component.StateContainer")
    root.addObject('RequiredPlugin', name="Sofa.Component.Topology.Container.Dynamic")
    root.addObject('RequiredPlugin', name="Sofa.Component.Visual")
    root.addObject('RequiredPlugin', name="Sofa.GL.Component.Rendering3D")
    root.addObject('VisualStyle', displayFlags="showBehaviorModels showVisual")
    root.addObject('CollisionPipeline', verbose="0")
    root.addObject('BruteForceBroadPhase')
    root.addObject('BVHNarrowPhase')
    root.addObject('CollisionResponse', response="PenalityContactForceField")
    root.addObject('MinProximityIntersection', name="Proximity", alarmDistance="0.8", contactDistance="0.5")
    root.addObject('DefaultAnimationLoop')

    SquareGravity = root.addChild('SquareGravity')
    SquareGravity.addObject('EulerImplicitSolver', name="cg_odesolver", printLog="false", rayleighStiffness="0.1", rayleighMass="0.1")
    SquareGravity.addObject('CGLinearSolver', iterations="25", name="linear solver", tolerance="1.0e-9", threshold="1.0e-9")
    SquareGravity.addObject('MeshGmshLoader', name="loader", filename="mesh/square3.msh", createSubelements="true")
    SquareGravity.addObject('MechanicalObject', src="@loader", scale="10")
    SquareGravity.addObject('include', href="Objects/TriangleSetTopology.xml", src="@loader")
    SquareGravity.addObject('DiagonalMass', massDensity="0.015")
    SquareGravity.addObject('FixedProjectiveConstraint', indices="0 1")
    SquareGravity.addObject('TriangularTensorMassForceField', name="TM", youngModulus="15", poissonRatio="0.9")
    SquareGravity.addObject('TriangleCollisionModel')

    SquareGravity = SquareGravity.addChild('SquareGravity')
    SquareGravity.addObject('OglModel', name="Visual", color="yellow")
    SquareGravity.addObject('IdentityMapping', input="@..", output="@Visual")