摘要
通过采用辅助层压板和添加极小弹性模量材料的复合材料加筋壁板有限元建模方法,应用MSC.PATRAN/NASTRAN的参数化建模与遗传算法相结合的复合材料加筋壁板的两步优化方法,对复合材料T型加筋壁板进行了从2 000 N/mm到6 000 N/mm压缩载荷下的结构优化分析。提出的基于参数化模型和遗传算法的复合材料加筋壁板的两步优化法分为壁板级优化和层压板级优化两部分,在壁板级优化得到最优的结构尺寸参数,在层板级优化得到最优的层压板铺层顺序。
This paper presented a method using auxiliary laminates and adding negligible material with infinitesimal elastic module to model the composite stiffened panel,and a bilevel optimization strategy of composite stiffened panel based on parametric modeling in PATRAN / NASTRAN and genetic algorithm.The composite T- stiffened panels under compression load from 2 000 N / mm to 6 000 N / mm are optimized. The bilevel optimization strategy is composed of two parts,the panel level optimization to obtain the optimum dimensions of the panel and laminate level optimization to find out the optimum stacking sequence of laminates.
出处
《航空计算技术》
2015年第2期79-83,共5页
Aeronautical Computing Technique
关键词
复合材料
加筋壁板
辅助层压板
参数化建模
遗传算法
两步优化
composite
stiffened panel
auxiliary laminate
parametric modeling
genetic algorithm
bilevel optimization
