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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2003, Vol. 4 Issue (2): 202-206    DOI: 10.1631/jzus.2003.0202
Civil Engineering     
Shape optimization of plate with static and dynamic constraints via virtual laminated element
LI Fang, XU Xing, LING Dao-sheng
Department of Civil Engineering, Zhejiang University, Hangzhou 310027, China; College of Electromechanical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
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Abstract  The virtual laminated element method (VLEM) can resolve structural shape optimization problems with a new method. According to the characteristics of VLEM, only some characterized layer thickness values need be defined as design variables instead of boundary node coordinates or some other parameters determining the system boundary. One of the important features of this method is that it is not necessary to regenerate the FE(finite element) grid during the optimization process so as to avoid optimization failures resulting from some distortion grid elements. The thickness distribution in thin plate optimization problems in other studies before is of stepped shape. However, in this paper, a continuous thickness distribution can be obtained after optimization using VLEM, and is more reasonable. Furthermore, an approximate reanalysis method named \"behavior model technique\" can be used to reduce the amount of structural reanalysis. Some typical examples are offered to prove the effectiveness and practicality of the proposed method.

Key words： Optimum design      Virtual laminated element method(VLEM)      Behavior model technique      Structural reanalysis     
Received: 28 March 2002     
CLC:  O224  
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LI Fang
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LING Dao-sheng
Cite this article:

LI Fang, XU Xing, LING Dao-sheng. Shape optimization of plate with static and dynamic constraints via virtual laminated element. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2003, 4(2): 202-206.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2003.0202     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2003/V4/I2/202

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