跨坐式单轨车辆转向架构架的轻量化研究

Lightweight Optimization of Straddle-type Monorail Vehicle Bogie Frame

以跨坐式单轨车辆转向架构架为例,以构架厚度为设计变量,应力为约束条件,质量最小为目标函数,利用结构优化设计方法,对其进行了尺寸优化设计。利用Hypermesh软件中的Opstruct模块进行尺寸优化求解。优化后的构架部分部件厚度变化明显,其自重降低22%,得到了同时满足静强度、刚度和疲劳寿命要求的构架轻量化设计优化方案。

According to the optimal design of the vehicle structure, the monorail bogie frame is taken as an example, the Opstruct module of Hypermesh soft is used to optimize the frame size, in order to meet the demands for the static strength and stiffness of lightweight frame design. The re- sult of lightweight design is in line with the requirements of fatigue life.