基于响应面方法的碳纤维蜂窝板有限元模型修正  

RSM-based FEM model updating for a carbon fiber honeycomb sandwich panel

作　　者：秦玉灵[1] 孔宪仁[1] 罗文波[2] 

机构地区：[1]哈尔滨工业大学卫星技术研究所,哈尔滨150001 [2]中国空间技术研究院,北京100086

出　　处：《振动与冲击》2011年第7期71-76,86,共7页Journal of Vibration and Shock

基　　金：长江学者创新团队发展计划(IRT0520)

摘　　要：蜂窝板是一种特殊的高强度轻质复合材料,在卫星等航天器结构中应用广泛。MSC/NASTRAN和ANSYS等大型通用有限元软件中没有蜂窝结构单元库,只能用蜂窝板等效结构参数进行计算,等效过程中的简化导致有限元计算结果与试验测量值之间存在差异。基于响应面的模型修正方法可以避免每次迭代都调用有限元程序,提高计算效率。依据三明治夹芯板理论计算蜂窝芯等效结构参数,用ANSYS中的SHELL91单元建立多铺层碳纤维蜂窝板模型,用基于均匀设计的试验设计方法进行试验设计,获得蜂窝板在各因素和水平下的试验数据,构造二次多项式响应面,并用带变异算子的改进粒子群算法对蜂窝芯结构等效参数进行修正,修正后参数代入有限元模型,能有效改善模型计算质量。A honeycomb sandwich panel with high strength and light weight is a special composite material which is widely used in satellite and other spacecrafts.There are no honeycomb material paremeters in FEM software,such as,MSC/NASTRAN and ANSYS,and the simplified equivalent structure parameters of a honeycomb sandwich panel are used,they result in the differences between the test data and the FEM data.The RSM-based model updating method avoids calling FEM program in every iteration,it improves the calculation efficiency.Here,the equivalent parameters of a honeycomb sandwich panel were calculated based on the honeycomb sandwich theory,the FEM of a multi-layer carbon fiber sandwich panel was established using SHELL91 in ANSYS.And the test data under all factors and effects were obtained based on uniform design method,the quadratic polynominal response surface model was established and the PSO with mutation factor was used to update the equivalent paremeters of the honeycomb sandwich panel,the updated paremeters were substituted into the FEM model,the FEM model calculation quality was effectively improved.

关 键 词：蜂窝板 响应面方法 三明治夹芯板理论 均匀设计 变异粒子群算法 

分 类 号：V414.1[航空宇航科学与技术—航空宇航推进理论与工程]