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ROBUST OPTIMUM DESIGN OF LAMINATED COMPOSITE PLATES
作者姓名:WangXiangyang  ChenJianqiao
作者单位:Wang Xiangyang1,2 Chen Jianqiao1 (1Department of Mechanics,Huazhong University of Science and Technology,Wuhan 430074,China) (2School of Transportation,Wuhan University of Technology,Wuhan 430063,China)
摘    要:A last-ply failure (LPF) analysis method for laminated composite plates is incorpo- rated into the ?nite element code-ANSYS, and a robust optimum design method is presented. The composite structure is analyzed by considering both in-plane and out-…

关 键 词:层积成分  LPF分析法  有限元  ANSYS码  最优化设计  复合材料
收稿时间:16 March 2003

Robust Optimum Design of Laminated Composite Plates
WangXiangyang ChenJianqiao.ROBUST OPTIMUM DESIGN OF LAMINATED COMPOSITE PLATES[J].Acta Mechanica Solida Sinica,2004,17(4):315-322.
Authors:Wang Xiangyang  and Chen Jianqiao
Institution:(1) Department of Mechanics, Huazhong University of Science and Technology, 430074 Wuhan, China;(2) School of Transportation, Wuhan University of Technology, 430063 Wuhan, China
Abstract:A last-ply failure (LPF) analysis method for laminated composite plates is incorpo- rated into the ?nite element code-ANSYS, and a robust optimum design method is presented. The composite structure is analyzed by considering both in-plane and out-of-plane loads. For a lamina, two major failure modes are considered: matrix failure and ?ber breakage that are characterized by the proper strength criteria in the literature. When a lamina has failed, the laminate sti?ness is modi?ed to re?ect the damage, and stresses in the structure are re-analyzed. This procedure is repeatedly performed until the whole structure fails and thus the ultimate strength is determined. A structural optimization problem is solved with the ?ber orientation and the lamina thickness as the design variables and the LPF load as the objective. Finally, the robust optimum design method for laminates is presented and discussed.
Keywords:laminated composites  last-ply failure  optimum design  robust optimization  
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