LESM
Class Anm

LESM.Anm

Direct Known Subclasses:

Anm_Frame2D, Anm_Frame3D, Anm_Grillage, Anm_Truss2D, Anm_Truss3D

public abstract class Anm

Abstract super-class that generically specifies an analysis model in the LESM program

• Anm

Field Summary

(package private) int	analysis_type Flag for type of analysis model
(package private) int	ndof Number of degrees-of-freedom per node

Method Summary

Anm	Anm() Constructor method
abstract void	assembleIntForce(Elem elem, double[] fel) Assembles contribution of given internal force vector to arrays of element internal forces
void	clean() Destructor method
abstract double[][]	displShapeFcnMtx(Elem elem, double x) Assembles element displacement shape function matrix
abstract double[]	elemLocDistribLoadFEF(Lelem load) Assembles element fixed end force vector in local system for an applied distributed load
abstract double[][]	elemLocStiffMtx(Elem elem) Assembles element stiffness matrix in local system
abstract double[]	elemLocThermalLoadFEF(Lelem load) Assembles element fixed end force vector in local system for an applied thermal load
abstract double[][]	gblToLocElemRotMtx(Elem elem) Assembles element degree of freedom rotation transformation matrix from global system to local system
abstract void	initIntDispl(Elem elem) Initializes element internal displacements array with null values
abstract void	initIntForce(Elem elem) Initializes element internal forces arrays with null values
abstract double[]	lclAnlIntDispl(Elem elem, double x) Computes element internal displacements from local analysis
abstract void	nodalLoads(Drv drv) Adds nodal load components to the global forcing vector
abstract void	setupDOFNum(Drv drv) Initializes global degree of freedom numbering matrix and counts total number of free and fixed d.o.f.s
abstract void	setupPrescDispl(Drv drv) Stores prescribed displacements in global displacement vector

Field Detail

analysis_type

int analysis_type

Flag for type of analysis model

ndof

int ndof

Number of degrees-of-freedom per node

Method Detail

Anm

public Anm Anm()

Constructor method

gblToLocElemRotMtx

public abstract double[][] gblToLocElemRotMtx(Elem elem)

Assembles element degree of freedom rotation transformation matrix from global system to local system

setupDOFNum

public abstract void setupDOFNum(Drv drv)

Initializes global degree of freedom numbering matrix and counts total number of free and fixed d.o.f.s

setupPrescDispl

public abstract void setupPrescDispl(Drv drv)

Stores prescribed displacements in global displacement vector

elemLocStiffMtx

public abstract double[][] elemLocStiffMtx(Elem elem)

Assembles element stiffness matrix in local system

nodalLoads

public abstract void nodalLoads(Drv drv)

Adds nodal load components to the global forcing vector

elemLocDistribLoadFEF

public abstract double[] elemLocDistribLoadFEF(Lelem load)

Assembles element fixed end force vector in local system for an applied distributed load

elemLocThermalLoadFEF

public abstract double[] elemLocThermalLoadFEF(Lelem load)

Assembles element fixed end force vector in local system for an applied thermal load

initIntForce

public abstract void initIntForce(Elem elem)

Initializes element internal forces arrays with null values

assembleIntForce

public abstract void assembleIntForce(Elem elem,
                                      double[] fel)

Assembles contribution of given internal force vector to arrays of element internal forces

initIntDispl

public abstract void initIntDispl(Elem elem)

Initializes element internal displacements array with null values

displShapeFcnMtx

public abstract double[][] displShapeFcnMtx(Elem elem,
                                            double x)

Assembles element displacement shape function matrix

lclAnlIntDispl

public abstract double[] lclAnlIntDispl(Elem elem,
                                        double x)

Computes element internal displacements from local analysis

clean

public void clean()

Destructor method