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基于正碰CAE分析的车身纵梁结构优化设计
投稿时间:2018-02-28  修订日期:2018-03-12  点此下载全文
引用本文:张立强.基于正碰CAE分析的车身纵梁结构优化设计[J].计算机辅助工程,2018,27(3):69-72.
作者单位E-mail
张立强 阿尔特汽车技术股份有限公司 yaopl@iat-auto.com 
中文摘要:对某车型进行50 km/h、100%正面碰撞CAE仿真分析,发现车身前纵梁溃缩变形不充分,导致B柱加速度峰值超过45g目标要求。对前纵梁结构和前防撞梁吸能盒进行优化,由CAE分析可知:车身前纵梁结构变形得到明显改善,B柱加速度峰值降低到45g以下,满足目标要求。该优化可有效提高车身正面碰撞的安全性能。
中文关键词:正面碰撞  防撞梁  吸能盒  加速度  溃缩变形  高强钢板  轻量化 中图分类号: U463.326文献标志码: B
 
Structure optimization design of vehicle longitudinal beam based on CAE analysis of frontal impact
Abstract:The CAE simulation analysis of some vehicle at 50 km/h velocity and 100% frontal impact is carried out. The crushing deformation of the front longitudinal beam is insufficient. The peak acceleration of B-pillar is more than the target requirement 45g. The front longitudinal beam structure and the energy absorbing box of the front bumper beam are optimized. The CAE analysis results on the optimized vehicle body show that the deformation of the front longitudinal beam structure is improved obviously, and the peak acceleration of B-pillar is reduced to less than 45g, which can meet the target requirement. The optimization can effectively improve the safety performance of vehicle frontal impact.
keywords:frontal impact  bumper beam  energy absorbing box  acceleration  crushing deformation  high strength steel plate  lightweight
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