STRENGTH SIMULATION AND TOPOLOGY OPTIMIZATION DESIGN OF OFF-ROAD VEHICLES’ HUB MOTOR HOUSING

QI Chang; MA Yuanhang; YANG Lining; YANG Shu; WANG Bolong

doi:10.16579/j.issn.1001.9669.2025.08.018

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STRENGTH SIMULATION AND TOPOLOGY OPTIMIZATION DESIGN OF OFF-ROAD VEHICLES’ HUB MOTOR HOUSING

·Optimization·Reliability· | 更新时间：2025-08-18

- STRENGTH SIMULATION AND TOPOLOGY OPTIMIZATION DESIGN OF OFF-ROAD VEHICLES’ HUB MOTOR HOUSING
- Journal of Mechanical Strength Vol. 47, Issue 8, Pages: 149-158(2025)
- 作者机构：
  
  1.大连理工大学汽车工程学院，大连 116024
  2.中国北方车辆研究所，北京 100072
- 作者简介：
  
  YANG Shu, E-mail: yangshu@dlut.edu.cn
- 基金信息：
  
  Project of the High Tech Research and Development Center of Ministry of Science and Technology(2022YFB2503503)
- DOI：10.16579/j.issn.1001.9669.2025.08.018
  CLC： TH114
- Received：26 October 2023，
  
  Revised：10 January 2024，
  
  Published：15 August 2025
- 稿件说明：
移动端阅览
亓昌，马远航，杨立宁，等. 越野车轮毂电机壳体强度仿真与拓扑优化设计［J］. 机械强度，2025，47（8）：149-158.

QI Chang，MA Yuanhang，YANG Lining，et al. Strength simulation and topology optimization design of off-road vehicles’ hub motor housing［J］. Journal of Mechanical Strength，2025，47（8）：149-158.
亓昌，马远航，杨立宁，等. 越野车轮毂电机壳体强度仿真与拓扑优化设计［J］. 机械强度，2025，47（8）：149-158. DOI： 10.16579/j.issn.1001.9669.2025.08.018.

QI Chang，MA Yuanhang，YANG Lining，et al. Strength simulation and topology optimization design of off-road vehicles’ hub motor housing［J］. Journal of Mechanical Strength，2025，47（8）：149-158. DOI： 10.16579/j.issn.1001.9669.2025.08.018.

摘要

针对某越野车轮毂电机壳体断裂和减重问题，进行了结构强度有限元仿真分析和结构拓扑优化设计。首先，构建整车多体动力学模型，仿真分析确定轮毂电机壳体的载荷边界条件。其次，基于壳体与相连接结构的空间位置关系，建立电机壳体与悬架系统有限元模型，进行了动态仿真分析。随后，利用OptiStruct软件平台，以结构柔度最小化为目标，以优化前后体积比和最大应力为约束，建立电机壳体在多种典型工况下的拓扑优化数学模型，并求解得到最优材料分布方案。最后，对优化结果进行了仿真验证。结果表明，相比现有设计，优化后的轮毂电机壳体结构应力降低40%以上，质量减轻了2.6%，解决了原有的断裂问题，消除了应力集中现象，为类似结构的轮毂电机壳体设计提供了有益参考。

Abstract

Aiming at the issues of fracture and weight reduction in the wheel hub motor housing of an off-road vehicle

a structural strength finite element simulation analysis and structural topology optimization design were conducted. Firstly

a multi-body dynamics model of the entire vehicle was established

and a simulation analysis was performed to determine the load boundary conditions of the hub motor housing. Secondly

based on the spatial position relation between the housing and interconnected structures

a finite element model of the motor housing and suspension system was constructed for dynamic simulation analysis. Subsequently

using the OptiStruct software platform

with the objective of minimizing structural compliance and constraints on volume ratio before and after optimization as well as the maximum stress

a mathematical topology optimization model for the motor housing under various typical operating conditions was established and solved to obtain the optimal material distribution scheme. Finally

the optimization results were verified by simulation. The results indicate that compared to the existing design

the optimized hub motor housing structure experiences a stress reduction of over 40% and a weight reduction of 2.6%. It addresses the original fracture issue and eliminates the phenomenon stress concentration

thus providing the valuable reference for the design of similar hub motor housing structures.

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references

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