基于BCC点阵填充的控制臂结构优化
Structure optimization of control arm based on BCC lattice filling
张阳 1张同庆 1刘磊 2王栋 2王朝华2
作者信息
- 1. 太原科技大学机械工程学院,山西太原 030024;太原科技大学重型机械教育部工程研究中心,山西太原 030024
- 2. 太原科技大学机械工程学院,山西太原 030024
- 折叠
摘要
针对汽车控制臂的轻量化设计需求,文中在其传力路径优化模型的基础上,提出了基于四棱锥体心立方(BCC)点阵填充的结构优化设计方法.根据控制臂结构特征,建立点阵填充等效模型,分别研究晶格不同杆径、杆长对模型刚度和强度的影响规律;以结构效能为评价准则,寻找最优填充的杆径和杆长;以此为依据,建立基于BCC点阵填充的控制臂模型.采用有限元分析对比优化前后控制臂的力学性能,结果表明:优化后的控制臂比刚度增大了 8.19％,质量减小了 7.07％.
Abstract
In response to the lightweight design requirements of automotive control arms,a structural optimization design method based on the four pyramid body centered cubic(BCC)lattice filling is proposed in this paper on the basis of the optimiza-tion model of load-transferred path.According to the structure characteristics,the lattice-filling equivalent model is set up,and the analysis is conducted on the influence of different lattice diameters and lengths on the structural stiffness and strength.Ac-cording to the evaluation criterion of structure efficiency,the optimal filled diameter and length are found.Then,the control arm model is designed based on BCC lattice filling.The finite-element analysis is carried out to compare the mechanical properties be-fore and after optimization.The results show that the specific stiffness of optimized model increases by 8.19％and its weight de-creases by 7.07％.
关键词
控制臂/结构优化/BCC/点阵结构/轻量化Key words
control arm/structure optimization/BCC/lattice structure/lightweight引用本文复制引用
基金项目
国家自然科学基金资助项目(52205278)
山西省基础研究计划资助项目(202103021223290)
山西省高等学校科技创新项目(2021L291)
太原科技大学科研启动基金项目(20212040)
出版年
2024
NETL
NSTL
万方数据