轻量化中基于应力驱动的单元网格构型匹配研究

Research on stress driven lattice structure matching of lightweight

为了实现结构体在满足力学性能前提下消耗最少材料,获得最轻重量的轻量化要求,提出一种基于应力驱动的单元网格构型匹配建模设计方法。将从单元网格构型库中选取的模型进行受力分析,得到不同单元网格构型所能承受的最大应力。对结构体建模进行受力分析得出结构体受力状态下三维空间应力值数据库,结合不同单元网格构型所能承受的最大应力进行匹配,实现结构体的轻量化设计。轻量化设计得到的结构体,不仅能够满足其力学性能,而且相比原来结构体的体积和重量减少了约48%,耗材更少。

To meet the lightweight requirement of minimum weight and minimum material consumption under the premise that the structure achieves mechanical properties, a modeling design method of stress driven element grid configuration is proposed. The stress analysis of the model selected from the lattice structure database will be used to obtain the maximum stress of different grid configurations. Database of 3-D space stress value with structural stress is obtained through stress analysis of structural modeling, and the maximum stress matching is made combining with different grid configurations, to realize the lightweight design of structure. The structure from lightweight design can not only meet the mechanical properties, but also reduces the volume and weight by about 48 % with less supplies compared to the original structure.