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Design sensitivity and constraint approximation methods for optimization in non-linear analysis

✍ Scribed by Valliappan, S. ;Tandjiria, V. ;Khalili, N.

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 140 KB
Volume: 13
Category: Article
ISSN: 1069-8299
DOI: 10.1002/(sici)1099-0887(199712)13:12<999::aid-cnm118>3.0.co;2-a

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✦ Synopsis

For the ®nite element non-linear analysis of engineering problems combined with an optimization method, two techniques Ð a semi-analytical sensitivity method and bi-point constraint approximation Ð have been proposed. To validate the proposed methods, a raft foundation on a soil medium has been analysed and the results have been compared. From the numerical results, it has been found that, for non-linear analysis, the semi-analytical sensitivity method is more ecient than the ®nite dierence method and the bi-point approximation gives results which compare favourably with the ®nite element results.

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