Category Archives: FEM – Analysis

Finite Element Method
The finite element method (FEM) is a numerical technique for finding approximate solutions to boundary value problems for differential equations. It uses variational methods (the calculus of variations) to minimize an error function and produce a stable solution. Analogous to the idea that connecting many tiny straight lines can approximate a larger circle, FEM encompasses all the methods for connecting many simple element equations over many small subdomains, named finite elements, to approximate a more complex equation over a larger domain.

How to create Contacts with a BCTABLE Card by NASTRAN SOL101

For contact simulation between two structural components with MSC Nastran is necessary to perform a static analysis (Linear Simulation by SOL101 … Continue reading

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Strength Criteria of Composite Material supported by FEM analysis

Strength Criteria of Composite Material supported by FEM analysis Continue reading

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Static Condensation – FEM Analysis

Background Theory With “condensation” is indicated a procedure adopted for the structural analysis to carry out a matrix of stiffness … Continue reading

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Contact simulation with MSC/Nastran

  Linear Gap The linear GAP is the simpliest contact form used in Nastran simulations. Linear GAP can solve a … Continue reading

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Non linear Buckling with FEM approach

Buckling analysis assesses the stability characteristics of a structure. An accurate solution to a buckling problem requires more efforts than … Continue reading

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Buckling of an imperfection-sensitive cylindrical shell

Buckling of an imperfection-sensitive cylindrical shell (EXTRACTED FROM ABAQUS GUIDE) This example serves as a guide to performing a postbuckling … Continue reading

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Nastran run in batch mode

Sometimes is necessary to perform several Nastran runs, and by running one by one could be necessary a lot of … Continue reading

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Nastran launch commands

The Nastran solver is executed usually by command line like „nastran“. Generally it could be with different name,  due to … Continue reading

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Vibration Analysis – Nastran SOL 103

Vibration Analysis – Nastran SOL 103 Continue reading

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Non Linear Analysis SOL 106

  In the most of cases the nonlinear effects in structures occur due to nonlinear material behavior and large deformations. … Continue reading

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