关键词: 有限元方法, 复合材料, 优化设计, 铺层设计

Abstract:

Static analysis and optimize analysis is applied to design composite channel plate. The result not only meets the condition, but accomplishes meaningful weight loss. The finite element method is used to optimize ply design with the lightest weight of structure as objective, the node displacement as restrain, the ply thickness as design variable. The displacement of composite structures replaced metal material and analyzed by HyperWorks software demonstrate the structure performance improvement. The way of replacing metal material with composite can meet all demands not only in strength but stiffness. It is found that the optimization result is accord with the request o f structure strength and the structural mass was obviously decreased. The mass of middle channel plate after optimization is 1.55 kg and can be reduced by 34.6% compared with the initial mass of middle channel plate.

Key words: the finite element method, composite material, optimal design, ply design