基于FEM的铝制吸能盒结构优化设计

Structure Optimization Design of Aluminum Alloy Crush Box Based on FEM

相比铁制吸能盒,铝制吸能盒在保证各项指标的同时减轻了重量。基于有限元的思想,借助计算机进行CAE分析,成功设计出一款吸能性能较好的铝制吸能盒。运用CAE平台技术,相比传统的人工计算更加快捷,模拟效果更直观。CAE技术不仅提高了设计的准确性,还降低了试验的成本。设计过程中以吸能盒模型的横截面形状为变量,用UG软件建立吸能盒的初始模型。通过对9种不同横截面形状的单腔吸能盒进行虚拟试验,数据结果表明以六边形搭配圆形的横截面的吸能效果最佳。

Compared with iron crush box, the aluminum alloy crush box would get much lighter With each qualify in- dex. Based on FEM and CAE, It mades an aluminum alloy crush box successfully which absorbed energy effectively. The method assisted by CAE, finish the assignment more efficiently and get the more intuitive result. Moreover, it not only soar the degree of accuracy, but economize the cost of experiment. During the period of design, set the shape of cross section as the only variable. By computer aid design, design 9 models, each of them have different cross section. And then calculate them by computer. Finally, it gets the conclusion that the best model of the experiment is the model 1 after comparing and analyzing the result.