Description
This works exactly as ChBeamSectionEulerAdvancedGeneric, but adds the effect of Jyy Jzz rotational sectional inertias.
The Jxx inertia of the Euler base class is automatically computed from Jyy Jzz by the polar theorem.
#include <ChBeamSectionEuler.h>
Public Member Functions | |
ChBeamSectionRayleighAdvancedGeneric (const double mAx, const double mTxx, const double mByy, const double mBzz, const double malpha, const double mCy, const double mCz, const double mSy, const double mSz, const double mmu, const double mJyy, const double mJzz, const double mJyz, const double mMy=0, const double mMz=0) | |
virtual void | SetInertiasPerUnitLength (const double mJyy, const double mJzz, const double mJyz) |
Set the Jyy Jzz Jyz components of the sectional inertia per unit length, in centerline reference, measured along centerline main axes. More... | |
virtual void | SetMainInertiasInMassReference (double Jmyy, double Jmzz, double phi) |
Set inertia moments, per unit length, as assumed computed in the Ym Zm "mass reference" frame, ie. More... | |
virtual void | GetMainInertiasInMassReference (double &Jmyy, double &Jmzz, double &phi) |
Get inertia moments, per unit length, as assumed computed in the Ym Zm "mass reference" frame, and the rotation phi of that frame, ie. More... | |
virtual void | ComputeInertiaMatrix (ChMatrixNM< double, 6, 6 > &M) override |
Compute the 6x6 sectional inertia matrix, as in {x_momentum,w_momentum}=[Mm]{xvel,wvel}. | |
Public Member Functions inherited from chrono::fea::ChBeamSectionEulerAdvancedGeneric | |
ChBeamSectionEulerAdvancedGeneric (const double mAx, const double mTxx, const double mByy, const double mBzz, const double malpha, const double mCy, const double mCz, const double mSy, const double mSz, const double mmu, const double mJxx, const double mMy=0, const double mMz=0) | |
virtual void | SetAxialRigidity (const double mv) |
Sets the axial rigidity, usually A*E for uniform elasticity, but for nonuniform elasticity here you can put a value ad-hoc from a preprocessor. | |
virtual void | SetXtorsionRigidity (const double mv) |
Sets the torsion rigidity, for torsion about X axis, at elastic center, usually J*G for uniform elasticity, but for nonuniform elasticity here you can put a value ad-hoc from a preprocessor. | |
virtual void | SetYbendingRigidity (const double mv) |
Sets the bending rigidity, for bending about Y axis, at elastic center, usually Iyy*E for uniform elasticity, but for nonuniform elasticity here you can put a value ad-hoc from a preprocessor. | |
virtual void | SetZbendingRigidity (const double mv) |
Sets the bending rigidity, for bending about Z axis, at elastic center, usually Izz*E for uniform elasticity, but for nonuniform elasticity here you can put a value ad-hoc from a preprocessor. | |
virtual void | SetSectionRotation (const double mv) |
Set the rotation in [rad], abour elastic center, of the Y Z axes for which the YbendingRigidity and ZbendingRigidity values are defined. | |
virtual void | SetCentroidY (const double mv) |
Sets the Y position of the elastic center respect to centerline. | |
virtual void | SetCentroidZ (const double mv) |
Sets the Z position of the elastic center respect to centerline. | |
virtual void | SetShearCenterY (const double mv) |
Sets the Y position of the shear center respect to centerline. | |
virtual void | SetShearCenterZ (const double mv) |
Sets the Z position of the shear center respect to centerline. | |
virtual void | SetMassPerUnitLength (const double mv) |
Set mass per unit length, ex.SI units [kg/m] For uniform density it would be A*density, but for nonuniform density here you can put a value ad-hoc from a preprocessor. | |
virtual void | SetInertiaJxxPerUnitLength (const double mv) |
Set the Jxx component of the inertia per unit length (polar inertia), computed at centerline. More... | |
virtual void | SetInertiaJxxPerUnitLengthInMassReference (const double mv) |
Set inertia moment per unit length Jxx_massref, as assumed computed in the "mass reference" frame, ie. More... | |
virtual double | GetInertiaJxxPerUnitLengthInMassReference () |
Get inertia moment per unit length Jxx_massref, as assumed computed in the "mass reference" frame, ie. More... | |
void | SetCenterOfMass (double my, double mz) |
"mass reference": set the displacement of the center of mass respect to the section centerline reference. | |
double | GetCenterOfMassY () |
double | GetCenterOfMassZ () |
virtual double | GetAxialRigidity () const override |
Gets the axial rigidity, usually A*E, but might be ad hoc. | |
virtual double | GetXtorsionRigidity () const override |
Gets the torsion rigidity, for torsion about X axis at elastic center, usually J*G, but might be ad hoc. | |
virtual double | GetYbendingRigidity () const override |
Gets the bending rigidity, for bending about Y axis at elastic center, usually Iyy*E, but might be ad hoc. | |
virtual double | GetZbendingRigidity () const override |
Gets the bending rigidity, for bending about Z axis at elastic center, usually Izz*E, but might be ad hoc. | |
virtual double | GetSectionRotation () const override |
Set the rotation of the Y Z section axes for which the YbendingRigidity and ZbendingRigidity are defined. | |
virtual double | GetCentroidY () const override |
Gets the Y position of the elastic center respect to centerline. | |
virtual double | GetCentroidZ () const override |
Gets the Z position of the elastic center respect to centerline. | |
virtual double | GetShearCenterY () const override |
Gets the Y position of the shear center respect to centerline. | |
virtual double | GetShearCenterZ () const override |
Gets the Z position of the shear center respect to centerline. | |
virtual void | ComputeQuadraticTerms (ChVector<> &mF, ChVector<> &mT, const ChVector<> &mW) override |
Compute the centrifugal term and gyroscopic term. More... | |
virtual double | GetMassPerUnitLength () const override |
Get mass per unit length, ex.SI units [kg/m]. | |
virtual double | GetInertiaJxxPerUnitLength () const override |
Get the Jxx component of the inertia per unit length (polar inertia), at centerline. | |
Public Member Functions inherited from chrono::fea::ChBeamSectionEuler | |
void | SetArtificialJyyJzzFactor (double mf) |
The Euler beam model has no rotational inertia per each section, assuming mass is concentrated on the centerline. More... | |
double | GetArtificialJyyJzzFactor () |
void | SetBeamRaleyghDamping (double mr) |
Set the Rayleigh damping ratio r (as in: R = r * K ), to do: also mass-proportional term. | |
double | GetBeamRaleyghDamping () |
Public Member Functions inherited from chrono::fea::ChBeamSection | |
void | SetDrawShape (std::shared_ptr< ChBeamSectionShape > mshape) |
Set the graphical representation for this section. More... | |
std::shared_ptr< ChBeamSectionShape > | GetDrawShape () const |
Get the drawing shape of this section (i.e.a 2D profile used for drawing 3D tesselation and visualization) By default a thin square section, use SetDrawShape() to change it. | |
void | SetDrawThickness (double thickness_y, double thickness_z) |
Shortcut: adds a ChBeamSectionShapeRectangular for visualization as a centered rectangular beam, and sets its width/height. More... | |
void | SetDrawCircularRadius (double draw_rad) |
Shortcut: adds a ChBeamSectionShapeCircular for visualization as a centered circular beam, and sets its radius. More... | |
void | SetCircular (bool ic) |
OBSOLETE only for backward compability More... | |
Additional Inherited Members | |
Protected Attributes inherited from chrono::fea::ChBeamSectionEulerAdvancedGeneric | |
double | Ax |
double | Txx |
double | Byy |
double | Bzz |
double | alpha |
double | Cy |
double | Cz |
double | Sy |
double | Sz |
double | mu |
double | Jxx |
double | My |
double | Mz |
Protected Attributes inherited from chrono::fea::ChBeamSectionEuler | |
double | JzzJyy_factor |
Constructor & Destructor Documentation
◆ ChBeamSectionRayleighAdvancedGeneric()
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inline |
- Parameters
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mAx axial rigidity mTxx torsion rigidity mByy bending regidity about yy mBzz bending rigidity about zz malpha section rotation about elastic center [rad] mCy elastic center y displacement respect to centerline mCz elastic center z displacement respect to centerline mSy shear center y displacement respect to centerline mSz shear center z displacement respect to centerline mmu mass per unit length mJyy inertia Jyy per unit lenght, in centerline reference, measured along centerline main axes mJzz inertia Jzz per unit lenght, in centerline reference, measured along centerline main axes mJyz inertia Jyz per unit lenght, in centerline reference, measured along centerline main axes mMy mass center y displacement respect to centerline mMz mass center z displacement respect to centerline
Member Function Documentation
◆ GetMainInertiasInMassReference()
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virtual |
Get inertia moments, per unit length, as assumed computed in the Ym Zm "mass reference" frame, and the rotation phi of that frame, ie.
inertias centered at the center of mass and rotated by phi angle to match the main axes of inertia: \( Jm_{yy} = \int_\Omega \rho z_{m}^2 d\Omega \), \( Jm_{zz} = \int_\Omega \rho y_{m}^2 d\Omega \). Assuming the center of mass is already set.
◆ SetInertiasPerUnitLength()
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virtual |
Set the Jyy Jzz Jyz components of the sectional inertia per unit length, in centerline reference, measured along centerline main axes.
These are defined as: \( J_{yy} = \int_\Omega \rho z^2 d\Omega \), also Jyy = Mm(4,4) \( J_{zz} = \int_\Omega \rho y^2 d\Omega \), also Jzz = Mm(5,5) \( J_{yz} = \int_\Omega \rho y z d\Omega \), also Jyz = -Mm(4,5) = -Mm(5,4) It is not needed to enter also Jxx because Jxx=(Jzz+Jyy) by the polar theorem.
◆ SetMainInertiasInMassReference()
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virtual |
Set inertia moments, per unit length, as assumed computed in the Ym Zm "mass reference" frame, ie.
centered at the center of mass and rotated by phi angle to match the main axes of inertia: \( Jm_{yy} = \int_\Omega \rho z_{m}^2 d\Omega \), \( Jm_{zz} = \int_\Omega \rho y_{m}^2 d\Omega \). Assuming the center of mass is already set.
The documentation for this class was generated from the following files:
- /builds/uwsbel/chrono/src/chrono/fea/ChBeamSectionEuler.h
- /builds/uwsbel/chrono/src/chrono/fea/ChBeamSectionEuler.cpp