Static Public Member Functions | List of all members
momentOfInertia Class Reference

Calculates the inertia tensor and principal axes and moments of a polyhedra/cells/triSurfaces. Inertia can either be of the solid body or of a thin shell. More...

Static Public Member Functions

static void massPropertiesSolid (const pointField &pts, const triFaceList &triFaces, scalar density, scalar &mass, vector &cM, symmTensor &J)
 
static void massPropertiesShell (const pointField &pts, const triFaceList &triFaces, scalar density, scalar &mass, vector &cM, symmTensor &J)
 
static void massPropertiesSolid (const triSurface &surf, scalar density, scalar &mass, vector &cM, symmTensor &J)
 
static void massPropertiesShell (const triSurface &surf, scalar density, scalar &mass, vector &cM, symmTensor &J)
 
static tensor applyParallelAxisTheorem (scalar mass, const vector &cM, const symmTensor &J, const vector &refPt)
 
static tmp< tensorField > meshInertia (const polyMesh &mesh)
 
static tensor meshInertia (const polyMesh &mesh, label celli)
 

Detailed Description

Calculates the inertia tensor and principal axes and moments of a polyhedra/cells/triSurfaces. Inertia can either be of the solid body or of a thin shell.

Source files

Definition at line 52 of file momentOfInertia.H.

Member Function Documentation

◆ massPropertiesSolid() [1/2]

void massPropertiesSolid ( const pointField &  pts,
const triFaceList &  triFaces,
scalar  density,
scalar &  mass,
vector &  cM,
symmTensor &  J 
)
static

Definition at line 31 of file momentOfInertia.C.

References forAll, Foam::I, n, Foam::sqr(), Vector< Cmpt >::x(), SymmTensor< Cmpt >::xx(), SymmTensor< Cmpt >::xy(), SymmTensor< Cmpt >::xz(), Vector< Cmpt >::y(), SymmTensor< Cmpt >::yy(), SymmTensor< Cmpt >::yz(), Vector< Cmpt >::z(), and SymmTensor< Cmpt >::zz().

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◆ massPropertiesShell() [1/2]

void massPropertiesShell ( const pointField &  pts,
const triFaceList &  triFaces,
scalar  density,
scalar &  mass,
vector &  cM,
symmTensor &  J 
)
static

Definition at line 185 of file momentOfInertia.C.

References triangle< Point, PointRef >::centre(), forAll, triangle< Point, PointRef >::mag(), and Foam::Zero.

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◆ massPropertiesSolid() [2/2]

void massPropertiesSolid ( const triSurface &  surf,
scalar  density,
scalar &  mass,
vector &  cM,
symmTensor &  J 
)
static

Definition at line 241 of file momentOfInertia.C.

References forAll, PrimitivePatch< FaceList, PointField >::points(), List< T >::size(), and triFace().

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◆ massPropertiesShell() [2/2]

void massPropertiesShell ( const triSurface &  surf,
scalar  density,
scalar &  mass,
vector &  cM,
symmTensor &  J 
)
static

Definition at line 261 of file momentOfInertia.C.

References forAll, PrimitivePatch< FaceList, PointField >::points(), List< T >::size(), and triFace().

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◆ applyParallelAxisTheorem()

Foam::tensor applyParallelAxisTheorem ( scalar  mass,
const vector &  cM,
const symmTensor &  J,
const vector &  refPt 
)
static

Definition at line 281 of file momentOfInertia.C.

References Foam::I, Foam::magSqr(), and Foam::sqr().

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◆ meshInertia() [1/2]

Foam::tmp< Foam::tensorField > meshInertia ( const polyMesh &  mesh)
static

Definition at line 299 of file momentOfInertia.C.

References forAll, mesh, primitiveMesh::nCells(), tmp< T >::ref(), and tf.

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◆ meshInertia() [2/2]

Foam::tensor meshInertia ( const polyMesh &  mesh,
label  celli 
)
static

Definition at line 317 of file momentOfInertia.C.

References polyMeshTetDecomposition::cellTetIndices(), forAll, mesh, polyMesh::points(), List< T >::size(), and Foam::Zero.

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The documentation for this class was generated from the following files: