Abstract: In this paper, taking the axle housing of our company as an example, the finite element analysis software ABAQUS is used to solve the problem, and the stress distribution of the axle housing is obtained. The finite element calculation results are imported into nCode software to evaluate the fatigue life of the axle housing, and the fatigue life value of the axle housing is obtained. According to the calculation results, the weak parts are optimized and improved to reduce the maximum stress value and improve the fatigue life. The calculation results of computer aided engineering (CAE) have been verified by the fatigue bench test, which ensures the accuracy of the calculation results. This study provides a basis for the design of similar products.

Key words: Axle housing; Structural strength; Fatigue life; Finite element analysis

摘要： 论文以公司某款车桥桥壳为例，采用有限元分析软件 ABAQUS 进行求解运算，得出了 桥壳的应力分布情况；将有限元计算结果导入到 nCode 软件，对桥壳进行疲劳寿命评估，得 出了桥壳疲劳寿命值。根据运算结果，对薄弱部位进行了优化改进，降低了最大应力值，提 高了疲劳寿命。计算机辅助工程（CAE）的计算结果经过了疲劳台架的试验验证，保证了计 算结果的准确性，该研究为类似产品的设计提供了参考。

关键词: 车桥桥壳；结构强度；疲劳寿命；有限元分析