Linpro 2.7.2 is a simple application for static and dynamic analysis of plane frames.
Static analysis: Program supports different types of loads and is very flexible at creating structure.
It has almost everything you need for linear static analysis of plane frames.
Modal analysis: Program calculates natural frequencies and mode shapes of a structure.
Dynamic analysis:
In order to determine dynamic response of a structure LinPro performs
linear time-history analysis.
As a solution method LinPro uses mode superposition method.
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New
Plasticity.msc is program for non-linear
structural analysis. Program is written in Java. The following material models are implemented:
Von Mises, Drucker-Prager, Cam-Clay, CASM and Linear elastic and two elements: (2D) bilinear quadrilateral 4-node element
and (3D) hexahedral 8-node element.
Program can display yield surface and stress path for a given integration point. Following picture shows Drucker-Prager
yield surface. Stress states colored in blue are in elastic domain, while red colored stress states
are on the yield surface.
Since program is written in Java it is platform independent.
It is also user friendly in many other aspects.
In the following picture you can see force-displacement diagram for some DOF.
Additional material models or elements can be easily implemented. In order to implement
new material model you only have to derive your
class from AbstractConstitutiveLaw and implement the following two methods in your class:
public class NewMaterial extends AbstractConstitutiveLaw{
@Override
public double[] stressIntegration(double[] strainIncrement){
//returns stress
}
@Override
public double[][] getConsistentTangentOperator(double[] strainIncrement){
//returns consistent tangent operator
}
}
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In the following picture
CASM yield surface is shown. CASM stands for Clay And Sand Model and it is proposed by
Yu H.S. Description can be found in Plasticity and geotechnics, Yu H.S., Springer 2006.
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