中国机械工程

• 先进材料加工工程 • 上一篇    下一篇

基于均匀化循环理论的车身焊点布局优化方法

胡朝辉;崔雪姣;成艾国;秦晓凯   

  1. 湖南大学汽车车身先进设计制造国家重点实验室,长沙,410082
  • 出版日期:2018-10-10 发布日期:2018-10-08
  • 基金资助:
    湖南省自然科学基金资助项目(13JJB003)
    Hunan Provincial Natural Science Foundation of China (No. 13JJB003)

Weld Spot Disposal Optimization of Body Joints Based on Homogenization Cycle Theory

HU Zhaohui;CUI Xuejiao;CHENG Aiguo;QIN Xiaokai   

  1. State Key Laboratory of Advanced Desing and Manufacture for Vehicle Body,Hunan University,Changsha,410082
  • Online:2018-10-10 Published:2018-10-08
  • Supported by:
    Hunan Provincial Natural Science Foundation of China (No. 13JJB003)

摘要: 提出一种基于焊点间距参数化的焊点布置优化方法,首先采用均匀分配理论建立几个不同焊点间距布置的有限元模型,进而根据循环迭代原理确定基于焊点等间距分布的迭代形式,并进行分析求解,最后以白车身刚度和车身关键区域最大应力值为约束条件,以焊点数量最小为设计目标,对焊点布置方案进行优化。该方法既保证了车身结构的性能要求,又保证了焊点均匀分布,提高了优化设计结果的工程实用性。

关键词: 均匀迭代, 循环分配, 焊点布局, 优化设计

Abstract: A weld spot optimization method was proposed based on parameterization of weld spot pitchs. Firstly, the finite element model of several different weld spot spacings was established by uniform distribution theory. Then, according to the cycle iteration principle, the iterative form was determined and analyzed based on the equidistant distributions of weld spots. Finally, the body-in-white stiffness and the maximum stress values of the key parts of the body were taken as the constrained,  the minimum number of weld spots was taken as the design goal, and the weld spot arrangements were optimized. The method ensures the performance requirements of the body structure, and ensures the uniform distribution of the weld spots and improves the engineering practicability of optimizing the design results.

Key words: uniform iterative, loop distribution, weld spot disposal, optimization design

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