Publication

An eigen-force method for finite element analysis and reanalysis

Koh, C.G.Ang, K.K.
Xu, R.
Citations
Altmetric:
Alternative Title
Abstract
This paper presents a force-based finite element method that involves eigen-space transformation of element stiffness matrices in the first analysis. In each subsequent analysis ('reanalysis') associated with structural variations, the solution obtained previously is modified making use of intrinsic properties of eigen solutions and avoiding the time-consuming task of solving a large system of equations. The structural variations may involve changes in material properties, birth or death of elements, or change in boundary conditions. Numerical examples are presented to compare the accuracy and computational efficiency of the proposed method with the displacement-based finite element method.
Keywords
Eigenvalue, Finite element method, Force method, Optimization, Reanalysis, Structural variation
Source Title
International Journal for Numerical Methods in Engineering
Publisher
Series/Report No.
Organizational Units
Organizational Unit
CIVIL ENGINEERING
dept
Rights
Date
1997
DOI
Type
Article
Additional Links
Related Datasets
Related Publications