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变密度法在车身焊点布置拓扑优化中的应用

罗明军 周帆 赵永玲 刘勇

罗明军, 周帆, 赵永玲, 刘勇. 变密度法在车身焊点布置拓扑优化中的应用[J]. 机械科学与技术, 2016, 35(3): 460-464. doi: 10.13433/j.cnki.1003-8728.2016.0324
引用本文: 罗明军, 周帆, 赵永玲, 刘勇. 变密度法在车身焊点布置拓扑优化中的应用[J]. 机械科学与技术, 2016, 35(3): 460-464. doi: 10.13433/j.cnki.1003-8728.2016.0324
Luo Mingjun, Zhou Fan, Zhao Yongling, Liu Yong. Application of Variable Density Method in Topology Combinatorial Optimization of Spot Weld Layout in Car Body-in-white[J]. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(3): 460-464. doi: 10.13433/j.cnki.1003-8728.2016.0324
Citation: Luo Mingjun, Zhou Fan, Zhao Yongling, Liu Yong. Application of Variable Density Method in Topology Combinatorial Optimization of Spot Weld Layout in Car Body-in-white[J]. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(3): 460-464. doi: 10.13433/j.cnki.1003-8728.2016.0324

变密度法在车身焊点布置拓扑优化中的应用

doi: 10.13433/j.cnki.1003-8728.2016.0324
基金项目: 

江西省教育厅青年科学基金项目(GJJ11034)与江西省自然科学基金项目(20142BAB216028)资助

详细信息
    作者简介:

    罗明军(1980-),讲师,博士,研究方向为结构动力学控制、结构振动与疲劳分析,lmjlmh2008@163.com

Application of Variable Density Method in Topology Combinatorial Optimization of Spot Weld Layout in Car Body-in-white

  • 摘要: 为探索焊点布置对乘用车车身振动特性的影响,将变密度拓扑优化法应用于车身焊点布置的设计中,改善乘用车车身共振问题。首先,确定影响车身低阶模态频率的关键部件,然后将车身结构进行分区,最后应用变密度法对车身关键部件的焊点进行分区拓扑优化。结合乘用车车身焊接工艺,以车身低频固有振动特性为优化目标,以车身焊点体积最少为约束条件,以焊点单元密度为设计变量,对车身结构焊点布置进行拓扑优化。经模态分析,结果表明拓扑优化后车身焊点数目缩减了2.38%,车身的一阶模态频率为27.53Hz,提高了1.28Hz。将变密度法应用于乘用车车身焊点布置拓扑优化设计,有助于确定车身焊点的最佳布局,减少结构共振的可能性。
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出版历程
  • 收稿日期:  2014-02-14
  • 刊出日期:  2016-03-05

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