artisynth.core.mechmodels

Class StiffnessMatrixScaler

java.lang.Object

artisynth.core.mechmodels.StiffnessMatrixScaler

All Implemented Interfaces:

SolveMatrixModifier

public class StiffnessMatrixScaler
extends java.lang.Object
implements SolveMatrixModifier

Class that applies both mass and length scaling to a stiffness matrix. Mass scaling is applied to all blocks. Length scaling is applied to blocks associated with frames that involve either angular or moment terms.

Constructor Summary

Constructors

Constructor and Description
StiffnessMatrixScaler(double massScale, double lengthScale)

Method Summary

Modifier and Type	Method and Description
void	modify(SparseBlockMatrix K, VectorNd f, java.util.ArrayList<DynamicComponent> comps) Modifies in place a solve or stiffness matrix K, along with an (optional) force vector f and component list comps.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

StiffnessMatrixScaler

public StiffnessMatrixScaler(double massScale,
                             double lengthScale)

Method Detail

modify

public void modify(SparseBlockMatrix K,
                   VectorNd f,
                   java.util.ArrayList<DynamicComponent> comps)

Modifies in place a solve or stiffness matrix K, along with an (optional) force vector f and component list comps. If provided, comps lists the components associated with each block entry in K, and will be modified if any rows/columns in K are permuted or deleted. If provided, f and comps should have sizes equal to the row (or column) size of K.

Specified by:

modify in interface SolveMatrixModifier

Parameters:

K - stiffness matrix to transform

f - if non-null, force vector to transform

comps - if non-null, components associated with each block entry in K.