chrono::fea::ChHexahedronFace Class Reference
Description
Face of a hexahedron-shaped element.
Corner nodes, obtainable with GetNodeN(), are in counterclockwise order seen from the outside.
v
^
3 o-----+-----o 2
| | |
--+-----+-----+-> u
| | |
0 o-----+-----o 1
#include <ChHexahedronFace.h>
Inheritance diagram for chrono::fea::ChHexahedronFace:
Collaboration diagram for chrono::fea::ChHexahedronFace:
Public Member Functions | |
| ChHexahedronFace (std::shared_ptr< ChElementHexahedron > element, char id) | |
| Construct the specified face (0 <= id <= 5) on the given hexahedral element. | |
| std::shared_ptr< ChNodeFEAxyz > | GetNodeN (int i) const |
| void | ShapeFunctions (ChVectorN< double, 4 > &N, double x, double y) |
| Fills the N shape function vector (size 4). | |
| virtual int | LoadableGet_ndof_x () override |
| Get the number of DOFs affected by this element (position part). | |
| virtual int | LoadableGet_ndof_w () override |
| Get the number of DOFs affected by this element (speed part). | |
| virtual void | LoadableGetStateBlock_x (int block_offset, ChState &mD) override |
| Get all the DOFs packed in a single vector (position part). | |
| virtual void | LoadableGetStateBlock_w (int block_offset, ChStateDelta &mD) override |
| Get all the DOFs packed in a single vector (speed part). | |
| virtual void | LoadableStateIncrement (const unsigned int off_x, ChState &x_new, const ChState &x, const unsigned int off_v, const ChStateDelta &Dv) override |
| Increment all DOFs using a delta. | |
| virtual int | Get_field_ncoords () override |
| Number of coordinates in the interpolated field: here the {x,y,z} displacement. | |
| virtual int | GetSubBlocks () override |
| Get the number of DOFs sub-blocks. | |
| virtual unsigned int | GetSubBlockOffset (int nblock) override |
| Get the offset of the specified sub-block of DOFs in global vector. | |
| virtual unsigned int | GetSubBlockSize (int nblock) override |
| Get the size of the specified sub-block of DOFs in global vector. | |
| virtual bool | IsSubBlockActive (int nblock) const override |
| Check if the specified sub-block of DOFs is active. | |
| virtual void | LoadableGetVariables (std::vector< ChVariables * > &mvars) override |
| Get the pointers to the contained ChVariables, appending to the mvars vector. | |
| virtual void | ComputeNF (const double U, const double V, ChVectorDynamic<> &Qi, double &detJ, const ChVectorDynamic<> &F, ChVectorDynamic<> *state_x, ChVectorDynamic<> *state_w) override |
| Evaluate N'*F , where N is some type of shape function evaluated at U,V coordinates of the surface, each ranging in -1..+1 F is a load, N'*F is the resulting generalized load. More... | |
| virtual bool | IsTriangleIntegrationNeeded () override |
| If true, use quadrature over u,v in [0..1] range as triangle volumetric coords. | |
| virtual ChVector | ComputeNormal (const double U, const double V) override |
| Get the normal to the surface at the parametric coordinate u,v. More... | |
Member Function Documentation
◆ ComputeNF()
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inlineoverridevirtual |
Evaluate N'*F , where N is some type of shape function evaluated at U,V coordinates of the surface, each ranging in -1..+1 F is a load, N'*F is the resulting generalized load.
Returns also det[J] with J=[dx/du,..], which may be useful in Gauss quadrature.
- Parameters
-
U parametric coordinate in surface V parametric coordinate in surface Qi result of N'*F, maybe with offset block_offset detJ det[J] F Input F vector, size is = n.field coords. state_x if != 0, update state (pos. part) to this, then evaluate Q state_w if != 0, update state (speed part) to this, then evaluate Q
Implements chrono::ChLoadableUV.
◆ ComputeNormal()
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inlineoverridevirtual |
Get the normal to the surface at the parametric coordinate u,v.
Normal must be considered pointing outside in case the surface is a boundary to a volume.
Implements chrono::ChLoadableUV.
The documentation for this class was generated from the following file:
- /builds/uwsbel/chrono/src/chrono/fea/ChHexahedronFace.h
