Multi-objective Optimization for Ultra High Strength Steel B-pillar of Car Body Hot Forming Process Parameters

China Mechanical Engineering ›› 2011, Vol. 22 ›› Issue (5): 621-624,629.

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Multi-objective Optimization for Ultra High Strength Steel B-pillar of Car Body Hot Forming Process Parameters

Gao Yunkai1;Deng Youzhi1;Cao Wei2

1.Tongji University, Shanghai,201804

2.Zhejiang Geely Automobile Research Institute Co., Ltd., Linhai,Zhejiang,317000

Online:2011-03-10 Published:2011-03-24
Supported by:
International S&T Cooperation Program of China( No. 2008DFB50020)

超高强度钢车身B柱加强板热成形工艺参数多目标优化

高云凯1;邓有志1;曹伟2

1.同济大学，上海，201804;

2.浙江吉利汽车研究院有限公司，临海，317000

基金资助:
中韩国际科技合作项目(2008DFB50020)
International S&T Cooperation Program of China( No. 2008DFB50020)

Abstract

Abstract:

The ultra high strength steel B-pillar of car body hot forming process parameters, such as punch velocity, binder force，static friction, initial temperature of blank, initial temperature of tools etc. were analyzed based on orthogonal experimental design method and the comprehensive evaluation to maximum thinning rate and mean value of dangerous points’ principal strain was obtained by means of fuzzy mathematics. From this evaluation, the extent of overall influences on the process parameters was clarified. Through analyzing the factors resulted from the simulation results, the optimized B-pillar of car body hot forming process parameters scheme was obtained.

Key words:

ultra high strength steel, B-pillar of car body hot forming process, process parameter optimization, multi-objective, orthogonal experimental design

摘要：

对超高强度钢车身B柱加强板热成形中的冲压速度、压边力、摩擦因数、板料初始温度及工具初始温度进行了工艺参数正交分析，并运用模糊数学中的综合评判法，对成形后的最大减薄率和危险点的主应变均值两个目标值进行了综合。通过综合指标的极差分析，确定冲压速度、压边力与摩擦因数组合、板料初始温度及工具初始温度对综合评分的影响程度，分析得出最优的车身B柱加强板热成形工艺参数组合方案。

关键词:

超高强度钢, 车身B柱加强板热成形, 工艺参数优化, 多目标, 正交试验设计



CLC Number:

TG386

GAO Yun-Kai, DENG Wei-Zhi, CAO Wei.

Multi-objective Optimization for Ultra High Strength Steel B-pillar of Car Body Hot Forming Process Parameters

[J]. China Mechanical Engineering, 2011, 22(5): 621-624,629.

高云凯, 邓有志, 曹伟.

超高强度钢车身B柱加强板热成形工艺参数多目标优化

[J]. 中国机械工程, 2011, 22(5): 621-624,629.

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Multi-objective Optimization for Ultra High Strength Steel B-pillar of Car Body Hot Forming Process Parameters

超高强度钢车身B柱加强板热成形工艺参数多目标优化

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