Structural Topology Optimization Design of Automotive Suspension Lower Knuckle Fork under Multiple Conditions

丁华锋; 李红兵; 陈朝鹰; 程清思

doi:10.13433/j.cnki.1003-8728.20230260

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Structural Topology Optimization Design of Automotive Suspension Lower Knuckle Fork under Multiple Conditions

更新时间：2026-04-23

- Structural Topology Optimization Design of Automotive Suspension Lower Knuckle Fork under Multiple Conditions
- Mechanical Science and Technology for Aerospace Engineering Vol. 44, Issue 7, Pages: 1207-1214(2025)
- 作者机构：
  
  1. 湖北文理学院机构汽车与交通工程学院,湖北,襄阳,441053
  2. 纯电动汽车电力系统设计与测试湖北省重点实验室,湖北,襄阳,441053
  3. 湖北三环锻造有限公司, 湖北谷城,441700
- 作者简介：
- 基金信息：
- DOI：10.13433/j.cnki.1003-8728.20230260
  CLC：
- Published：2025
- 稿件说明：
移动端阅览
丁华锋, 李红兵, 陈朝鹰, et al. Structural Topology Optimization Design of Automotive Suspension Lower Knuckle Fork under Multiple Conditions[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(7): 1207-1214.
DOI：

丁华锋, 李红兵, 陈朝鹰, et al. Structural Topology Optimization Design of Automotive Suspension Lower Knuckle Fork under Multiple Conditions[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(7): 1207-1214. DOI： 10.13433/j.cnki.1003-8728.20230260.

摘要

针对汽车悬架下节叉结构复杂受载情况所导致的轻量化设计难度大的问题，该文利用拓扑优化方法对其进行结构优化设计。以某汽车悬架下节叉结构为研究对象，采用线性加权和法建立了下节叉结构多工况拓扑优化数学模型，并通过层次分析法确定各子工况的权重系数，最后基于ANSYS软件进行求解计算，得到了下节叉结构的多工况拓扑优化结果。重建优化模型，并进行有限元分析验证。结果表明: 优化后的下节叉在结构性能满足设计要求的前提下，质量减少了14.58%，可为实际工业生产提供参考。

Abstract

In view of the difficulty of structural lightweight design of automobile suspension′s lower knuckle fork caused by the complex loading conditions

the topology optimization method is used to optimize its structure design in this paper. Taking an automobile suspension lower knuckle fork structure as the research object

a mathematical model of topology optimization of lower knuckle fork structure under multiple working conditions is established by linear weighted sum method

and the weight coefficients of each sub-working condition are determined by hierarchical analysis method

and finally the results of topology optimization of lower knuckle fork structure under multiple working conditions are obtained by solving calculation based on ANSYS software. The optimized model is reconstructed and verified by finite element analysis. The results show that the mass of the optimized lower knuckle fork is reduced by 14.58% than original fork structure while the structural performance meets the design requirements

which can provide a reference for the actual industrial production.

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