• 戴明华
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基于侧碰的热冲压强度梯度车身结构仿真优化

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Indexed by:会议论文

Date of Publication:2015-10-01

Document Type:A

Volume:Vol.3

Page Number:1001-1004

Key Words:汽车车身;结构优化;强度梯度;抗撞性能

Abstract:本文采用动力显式有限元方法,以某车型B柱的在侧碰过程中的吸能量和最大侵入量为评价指标,研究了强度梯度热成形零件在车身侧碰过程中的抗撞性能.建立了强度梯度热成形B柱侧碰抗撞性能预测响应面模型,并在此基础上对梯度复合结构进行了多目标优化设计,对比分析了强度梯度分布的B柱与均匀B柱的防撞性能.结果表明:经梯度性能优化后的B柱防撞性能优于均一材料的高强度钢B柱.

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