Vol. 2, No. 7, 2007

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ISSN: 1559-3959
Optimization of stiffened panels considering geometric nonlinearity

Peyman Khosravi, Ramin Sedaghati and Rajamohan Ganesan

Vol. 2 (2007), No. 7, 1249–1265
Abstract

In this study, an optimality criterion is presented for thickness optimization of plate structures with geometric nonlinearity. The optimization problem considers the thickness of each element of the finite element mesh as a design variable and aims to maximize the load-carrying capacity of the structure subject to constant total volume. The result of the thickness optimization of a nonstiffened panel is then used for locating the potential places to add the stiffeners. It is shown that the load-carrying capacity of the original panel may be improved significantly while having the same volume of material. Application of the method is illustrated by numerical examples.

Keywords
thickness optimization, optimality criterion, stiffened plates, geometric nonlinearity
Milestones
Received: 7 September 2006
Accepted: 15 February 2007
Published: 1 September 2007
Authors
Peyman Khosravi
Department of Mechanical and Industrial Engineering
Concordia University
Montreal, Quebec H3G 1M8
Canada
Ramin Sedaghati
Department of Mechanical and Industrial Engineering
Concordia University
Montreal, Quebec H3G 1M8
Canada
Rajamohan Ganesan
Department of Mechanical and Industrial Engineering
Concordia University
Montreal, Quebec H3G 1M8
Canada