论文部分内容阅读
阐述了复合材料格栅结构稳定性及优化分析方法研究概况。指出在格栅结构初级设计阶段可利用拟膜分析法对等效的格栅平板、圆筒及锥筒进行整体屈曲计算即可,而对于复杂构型格栅结构,由于不对称性及拉-压-扭耦合效应存在很难获得解析解,需借助有限法对结构进行非线性求解而求得其真实力学响应,同时还介绍了其他算法,如遗传算法。最后介绍了复合材料格栅结构破坏机理的一些试验方法。
The research status of composite grid structure stability and optimization analysis method is described. It is pointed out that in the primary design stage of grid structure, the equivalent buckling analysis of grid plate, cylinder and conical cylinder can be performed by simulating membrane analysis. For the complex structure of grid structure, due to asymmetry and pull - The existence of pressure-torsional coupling effect is difficult to obtain analytic solution, the finite element method must be used to solve the structure nonlinearly and obtain the true mechanical response. At the same time, other algorithms such as genetic algorithm are also introduced. Finally, some test methods for the failure mechanism of composite grid structure are introduced.