fhm.edu.fem.calc
Class FEMCalcCircleMembrane
java.lang.Object
fhm.edu.fem.calc.FEMCalc
fhm.edu.fem.calc.FEMCalcGauss
fhm.edu.fem.calc.FEMCalcTemperature
fhm.edu.fem.calc.FEMCalcMembrane
fhm.edu.fem.calc.FEMCalcCircleMembrane
- Direct Known Subclasses:
- FEMCalcSpanner
public class FEMCalcCircleMembrane
- extends FEMCalcMembrane
Class Description:
This class is being used when we have a FEM5 files for Membran
calculations. Any node designated as border node in the FEMIN File
is taken out of the calculations (all other get Alias IDs).
This class is especially used for Circle Membranes in case we want to use
the circle-ring- and circle-sector-element calculation
- Author:
- Thomas Woellert (thomas@woellert.net), Stefan Weissbach (weissbst@gmx.de)
Constructor Summary |
FEMCalcCircleMembrane()
Create a new FEM Calculator for Circle Membrane special Calculations |
Method Summary |
protected void |
calculateExactEigenvalues()
Calculate the exact eigenvalues of this circle membrane and
display as many as needed, sorted from small to big |
protected boolean |
compileMassMatrix()
Compile the Complete-Mass-Matrix |
protected boolean |
compileStiffnessMatrix()
Do the compilation with the Gauss-Quadrature-Integration
with it's size depending on the number of inner nodes we still have after creating
the alias IDs |
protected double |
getBesselValue(int m,
int n)
Get the bessel value at the given index
as shown in Schwarz Buch Page 140 |
boolean |
start()
Call this method to start the calculation |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
besselValues
protected double[][] besselValues
besselValuesInitialized
protected boolean besselValuesInitialized
membraneCircle
protected MembraneCircle membraneCircle
FEMCalcCircleMembrane
public FEMCalcCircleMembrane()
- Create a new FEM Calculator for Circle Membrane special Calculations
calculateExactEigenvalues
protected void calculateExactEigenvalues()
- Calculate the exact eigenvalues of this circle membrane and
display as many as needed, sorted from small to big
compileMassMatrix
protected boolean compileMassMatrix()
- Compile the Complete-Mass-Matrix
- Overrides:
compileMassMatrix
in class FEMCalcMembrane
- Returns:
- true if all went well, false otherwise
compileStiffnessMatrix
protected boolean compileStiffnessMatrix()
- Do the compilation with the Gauss-Quadrature-Integration
with it's size depending on the number of inner nodes we still have after creating
the alias IDs
- Overrides:
compileStiffnessMatrix
in class FEMCalcMembrane
- Returns:
- true if all went well, false otherwise
getBesselValue
protected double getBesselValue(int m,
int n)
- Get the bessel value at the given index
as shown in Schwarz Buch Page 140
- Parameters:
n,
- the column
- Returns:
- double
start
public boolean start()
- Call this method to start the calculation
- Overrides:
start
in class FEMCalcMembrane
- Returns:
- true if all went well, false otherwise