Buckling design optimization of complex built-up structures with shape and size variables |
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| Authors: | Y.X. Gu G.Z. Zhao H.W. Zhang Z. Kang R.V. Grandhi |
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| Affiliation: | State Key Laboratory of Structural Analysis for Industrial Equipment, Dept. of Engineering Mechanics, Dalian University of Technology, China? e-mail: guyx96@dlut.edu.cn, CN
Dept. of Mechanical Engineering, Wright State University, Dayton, OH 45435, USA? e-mail: rgrandhi@cs.wright.edu, US
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| Abstract: | The design optimization of buckling behaviour is studied for complex built-up structures composed of various kinds of elements and implemented within JIFEX95, a general-purpose software for finite element analysis and design optimization. The direct and adjoint methods of sensitivity analysis for critical buckling loads are presented with detailed computational procedures. Particularly, the variations of prebuckling stresses and external loads have been accounted for. The design model and solution methods presented in this paper are available for both shape and size optimization, and buckling optimization can also be combined with static, frequency and dynamic response optimization. The numerical examples show the applications of the buckling optimization method and the effectiveness of the methods and the program of this paper. Received February 23, 1999 |
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| Keywords: | : Shape optimization size optimization buckling natural frequency dynamic response built-up structures |
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