標題: Optimum design of laminated composite foam-filled sandwich plates subjected to strength constraint
作者: Kam, TY
Lai, FM
Chao, TM
機械工程學系
Department of Mechanical Engineering
關鍵字: composite materials;sandwich plates;laminates;optimization;finite element method;first-ply failure;stress analysis
公開日期: 1-七月-1999
摘要: Optimum design of laminated composite sandwich plates with both continuous (core thickness) and discrete (layer group fiber angles and thicknesses) design variables subjected to strength constraint is studied via a two-level optimization technique. The strength of a sandwich plate is determined in a failure analysis using the Tsai-Wu failure criterion and the finite element method which is formulated on the basis of the layerwise linear displacement theory. In the first level optimization of the design process, the discrete design variables are temporarily treated as continuous variables and the corresponding minimum weight of the sandwich plate is evaluated subject to the strength constraint using a constrained multi-start global optimization method. In the second level optimization, the optimal solution obtained in the first level optimization is used in the branch and bound method for solving a discrete optimization problem to determine the optimal design parameters and the final weight of the plate. Failure test of laminated composite foam-filled sandwich plates with different lamination arrangements are performed to validate the proposed optimal design method. A number of examples of the design of laminated composite foam-filled sandwich plates are given to demonstrate the feasibility and applications of the proposed method. (C) 1999 Elsevier Science Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/S0020-7683(98)00133-4
http://hdl.handle.net/11536/31228
ISSN: 0020-7683
DOI: 10.1016/S0020-7683(98)00133-4
期刊: INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
Volume: 36
Issue: 19
起始頁: 2865
結束頁: 2889
顯示於類別:期刊論文


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