基于Hypermesh汽车吸能盒诱导槽优化设计

Optimization Design of Energy Absorbing Box Based on Hypermesh

根据某汽车吸能盒的结构特点,采用增开双诱导槽的方式,对吸能盒进行优化设计。以双诱导槽的位置和深度为研究对象,采用响应面法和正交实验设计法,以吸能盒的吸能量与载荷峰值为指标,建立结构优化的数学模型。利用MATLAB优化工具求得模型的最优解,并采用Hypermesh建立优化后的有限元模型进行仿真验证。仿真结果表明:优化后的结构明显降低B柱加速度峰值,改善吸能效果,提高汽车的安全性。

According to the structure characteristics of the energy absorbing box,the energy absorber was optimized by adding double induction slots.Taking the position and depth of the energy absorbing box as the research object,the response surface methodology(RSM)and the orthogonal experimental design(OED)are adopted,and the energy absorption and load peak of the energy absorbing box are taken as indicators to establish the optimization model.The optimal solution of the model is obtained by using the Matlab optimization tool,and the optimized finite element model is established through Hypermesh for simulation test.The simulation results show that the optimized structure can obviously reduce the peak acceleration of B-column,as well as improve the energy absorption effect,and enhance the safety of the automobile.