某汽车中间传动轴轻量化设计研究

Research on Lightweight Design of Intermediate Drive Shaft of an Automobile

摘要: 对某汽车中间传动轴进行轻量化设计。首先在SolidWorks软件中建立某汽车中间传动轴三维模型，然后导入到workbench中进行结构静力学分析，该中间传动轴所受应力远小于材料的抗扭强度，具有较大的轻量化空间。提出两种不同的轻量化方案对其进行静力学分析，有限元结果显示两种方案都能满足强度要求，且降低了质量；对质量较轻的方案进行基于响应面法的结构优化并进行仿真验证。结果表明，优化后的结构减重46.5%，其固有频率与原始结构接近且满足强度要求，实现了中间传动轴轻量化设计目标。

Abstract: There is lightweight design of an automobile intermediate drive shaft. Firstly, a three-dimensional model of an automobile intermediate drive shaft is established in SolidWorks software, and then imported into workbench for structural static analysis, the stress of the intermediate drive shaft is much less than the torsional strength of the material, and it has a large lightweight space. Two dif-ferent lightweight schemes were proposed for static analysis, and the finite element results showed that both schemes could meet the strength requirements and reduce the mass. The structure opti-mization based on the response surface method is carried out for the light mass scheme and the simulation is verified. The results show that the weight of the optimized structure is reduced by 46.5%, and its natural frequency is close to the original structure and meets the strength require-ments, which achieves the lightweight design goal of the intermediate drive shaft.