摘要
针对复合材料加筋壁板的结构优化选型问题,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PATRAN/NASTRAN的参数化建模功能和遗传算法相结合的复合材料加筋壁板的优化方法,对5种复合材料结构形式进行了从2000N/mm到6000N/mm压缩载荷下的结构优化分析。结果表明,当载荷小于4500N/mm时,最有效的加筋壁板结构型式为J型;当压缩载荷大于4500N/mm时,最有效的加筋壁板结构型式为I型。
The finite element modeling method of using auxiliary laminate and adding negligible material with infinitesimal elastic module on the skin and the lower flange of stringer, as well as the parametric modeling function of PATRAN/ NASTRAN and genetic algorithm were applied to optimize 5 different composite stiffened panels under certain constraints and compression load from 2000 N/mm to 6000 N/mm. It was found that the most efficient composite stiffened panel is J section from 2000 N/mm to 4500 N/mm, and I-stiffened panel is the optimum configuration when the compression load is greater than 4500 N/mm.
出处
《航空科学技术》
2015年第6期22-26,共5页
Aeronautical Science & Technology
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
优化
composite
stiffened panel
auxiliary laminate
parametric modeling
genetic algorithm
optimization
