Eigenvalue Analysis



The goal of modal analysis in structural mechanics is to determine the natural mode shapes and frequencies of an object or structure during free vibration. It is common to use the finite element method (FEM) to perform this analysis because, like other calculations using the FEM, the object being analyzed can have arbitrary shape and the results of the calculations are acceptable. The types of equations which arise from modal analysis are those seen in eigensystems. The physical interpretation of the eigenvalues and eigenvectors which come from solving the system are that they represent the frequencies and corresponding mode shapes. Sometimes, the only desired modes are the lowest frequencies because they can be the most prominent modes at which the object will vibrate, dominating all the higher frequency modes.

Calculation Reference
Finite Element Method
Dynamic Analysis

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Submitted On:
14 Feb 2014
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347.03 Kb
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File Author:
Turan Babacan

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Comments: 1
JohnDoyle[Admin] 6 years ago
Stunningly good Turan. I am simply running out of superlatives to describe your work. Once again we are all in your debt for publishing such outstanding work.