混合材料双稳态壳结构力学性能分析及优化设计  

Mechanical Properties Analysis and Optimization Design forBistable Hybrid Composite Shells

作　　者：叶红玲[1] 王秀华 王伟伟[1] 王振祺 YE Hongling;WANG Xiuhua;WANG Weiwei;WANG Zhenqi(Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学材料与制造学部,北京100124

出　　处：《北京工业大学学报》2022年第11期1113-1121,共9页Journal of Beijing University of Technology

基　　金：国家自然科学基金资助项目(11872080);北京市自然科学基金资助项目(3192005)。

摘　　要：为了提高双稳态结构的承载能力,设计了一种由金属材料与复合材料组成的混合双稳态壳结构.利用数值仿真方法研究了其稳态转变过程中的力学性能,探讨了中间金属层厚度、铺层角度、初始横截面半径以及轴向长度对混合材料双稳态壳结构承载能力与第二稳态构型的影响规律.通过主次影响分析方法比较各几何参数对力学响应的重要程度.基于响应面方法,建立了以混合材料双稳态壳结构几何参数为设计变量、以许用应力为约束、以转变载荷最大为目标的优化模型,并采用序列二次规划算法进行了求解,获得最优的设计参数.研究结果对于提高双稳态结构力学性能具有一定的参考价值.A type of bistable hybrid shell composed of metallic materials and composites was proposed to improve the load-bearing capacity of bistable structures.The mechanical properties in the transition process between two stable states were investigated based on the numerical simulation method.The effects of metal thickness,ply angle,radius and length of bistable hybrid shell on the load-bearing capacity and the configuration of the second stable state were discussed.The primary and secondary sequence method was employed to investigate the relative importance of the geometric parameters on the mechanical properties.The optimization model was established based on the response surface methodology(RSM),where the design variables were the geometric parameters,the constraint was the allowable stress and the objective was to maximize the snap load.The sequential quadratic programing algorithm was adopted to solve the optimization model,and the optimal designs were obtained.The proposed method has a great of significance in improving the mechanical properties for bistable structures.

关 键 词：混合材料双稳态壳结构 数值仿真 力学性能 参数影响 响应面方法 优化设计 

分 类 号：O342[理学—固体力学]