悬置支架结构的有限元分析与拓扑优化设计

Finite element analysis and topology optimization design of mounting bracket structure

卡车驾驶室悬置支架是重要的连接构件之一,为了在产品设计阶段寻求最佳设计方案,利用通用有限元分析和优化软件Hyperworks7.0,以柔度为目标,以体积作为约束条件,结合零件的结构、约束、受力等特点,对驾驶室悬置支架进行了有限元分析和结构拓扑优化,并在优化基础上进行了二次设计.与传统设计支架相比,优化设计支架最大应力减小50.6%,质量减少14.6%.基于有限元法的结构分析和拓扑优化,能在产品开发阶段主动寻求最优方案,对提高产品质量、缩短设计周期有重要作用.

The mounting bracket is one of the most important connecting components in truck cab. With taking the flexility as object function and the volume as constraint condition, the topology optimization design for the cab mounting bracket of a truck was performed with Hyperworks 7.0, where characteristics of structure, constraints and forces were considered. And then, the secondary design for the bracket structure was conducted on the basis of the optimization. For the optimized mounting bracket, the maximum stress decreases by 50.6 % and the mass reduces by 14.6 %. The structure analysis and topology optimization based on the finite element method are helpful to get the optimal scheme in the developing stage of products, and have important significance in shortening the design period and improving the product quality.