chrono::fea::ChElementTetrahedron Class Reference
Description
Class for tetrahedral elements.
#include <ChElementTetrahedron.h>
Inheritance diagram for chrono::fea::ChElementTetrahedron:
Collaboration diagram for chrono::fea::ChElementTetrahedron:
Public Member Functions | |
| double | GetVolume () |
| virtual void | Update () |
| Update: this is called at least at each time step. More... | |
 Public Member Functions inherited from chrono::fea::ChElementGeneric | |
| ChKblockGeneric & | Kstiffness () |
| Access the proxy to stiffness, for sparse solver. | |
| virtual void | EleIntLoadResidual_F (ChVectorDynamic<> &R, const double c) override |
| (This is a default (a bit unoptimal) book keeping so that in children classes you can avoid implementing this EleIntLoadResidual_F function, unless you need faster code) | |
| virtual void | EleIntLoadResidual_Mv (ChVectorDynamic<> &R, const ChVectorDynamic<> &w, const double c) override |
| (This is a default (VERY UNOPTIMAL) book keeping so that in children classes you can avoid implementing this EleIntLoadResidual_Mv function, unless you need faster code.) | |
| virtual void | EleIntLoadResidual_F_gravity (ChVectorDynamic<> &R, const ChVector<> &G_acc, const double c) override |
| (This is a default (VERY UNOPTIMAL) book keeping so that in children classes you can avoid implementing this EleIntLoadResidual_F_gravity function, unless you need faster code. More... | |
| virtual void | ComputeGravityForces (ChVectorDynamic<> &Fg, const ChVector<> &G_acc) override |
| (This is the default implementation (POTENTIALLY INEFFICIENT) so that in children classes you can avoid implementing this ComputeGravityForces() function, unless you need faster code.) This fallback implementation uses a temp ChLoaderGravity that applies the load to elements only if they are inherited by ChLoadableUVW so it can use GetDensity() and Gauss quadrature. | |
| virtual void | ComputeMmatrixGlobal (ChMatrixRef M) override |
| Returns the global mass matrix. More... | |
| virtual void | InjectKRMmatrices (ChSystemDescriptor &mdescriptor) override |
| Tell to a system descriptor that there are item(s) of type ChKblock in this object (for further passing it to a solver) | |
| virtual void | KRMmatricesLoad (double Kfactor, double Rfactor, double Mfactor) override |
| Adds the current stiffness K and damping R and mass M matrices in encapsulated ChKblock item(s), if any. More... | |
| virtual void | VariablesFbLoadInternalForces (double factor=1.) override |
| Adds the internal forces, expressed as nodal forces, into the encapsulated ChVariables, in the 'fb' part: qf+=forces*factor (This is a default (a bit unoptimal) book keeping so that in children classes you can avoid implementing this VariablesFbLoadInternalForces function, unless you need faster code) | |
| virtual void | VariablesFbIncrementMq () override |
| Adds M*q (internal masses multiplied current 'qb') to Fb, ex. More... | |
| Public Member Functions inherited from chrono::fea::ChElementBase | |
| virtual int | GetNnodes ()=0 |
| Gets the number of nodes used by this element. | |
| virtual int | GetNdofs ()=0 |
| Gets the number of coordinates in the field used by the referenced nodes. More... | |
| virtual int | GetNodeNdofs (int n)=0 |
| Get the number of coordinates from the n-th node that are used by this element. More... | |
| virtual std::shared_ptr< ChNodeFEAbase > | GetNodeN (int n)=0 |
| Access the nth node. | |
| virtual void | GetStateBlock (ChVectorDynamic<> &mD)=0 |
| Fills the D vector with the current field values at the nodes of the element, with proper ordering. More... | |
| virtual void | ComputeNodalMass () |
| Compute element's nodal masses. | |
| virtual void | ComputeKRMmatricesGlobal (ChMatrixRef H, double Kfactor, double Rfactor=0, double Mfactor=0)=0 |
| Sets H as the stiffness matrix K, scaled by Kfactor. More... | |
| virtual void | ComputeInternalForces (ChVectorDynamic<> &Fi)=0 |
| Computes the internal forces (ex. More... | |
| virtual void | EleDoIntegration () |
| This is optionally implemented if there is some internal state that requires integration. | |
| Public Member Functions inherited from chrono::fea::ChElementCorotational | |
| ChMatrix33 & | Rotation () |
| Access the cumulative rotation matrix of the element, The rotation is expressed relative to initial reference position of element. | |
| virtual void | UpdateRotation ()=0 |
| Given the actual position of the nodes, recompute the cumulative rotation matrix A. More... | |
Protected Attributes | |
| double | Volume |
| Protected Attributes inherited from chrono::fea::ChElementGeneric | |
| ChKblockGeneric | Kmatr |
| Protected Attributes inherited from chrono::fea::ChElementCorotational | |
| ChMatrix33 | A |
Member Function Documentation
◆ Update()
|
inlinevirtual |
Update: this is called at least at each time step.
If the element has to keep updated some auxiliary data, such as the rotation matrices for corotational approach, this is the proper place.
Reimplemented from chrono::fea::ChElementBase.
The documentation for this class was generated from the following file:
- /builds/uwsbel/chrono/src/chrono/fea/ChElementTetrahedron.h
