Natural approach for geometric non-linear analysis of thin-walled frames
β Scribed by Aura Conci; Marcelo Gattass
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 1010 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0029-5981
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## Abstract This paper is concerned with the estimation of errors that arise in the geometrically nonβlinear analysis of framed structures using 1D beamβcolumn finite elements. A quartic element is used to illustrate specific issues of error estimation relating to geometrically nonβlinear analysis,
The paper presents a means of determining the non-linear sti!ness matrices from expressions for the "rst and second variation of the Total Potential of a thin-walled open section "nite element that lead to non-linear sti!ness equations. These non-linear equations can be solved for moderate to large