摘要
根据GB 11552-2009对仪表板头撞的相关规定,锤头的加速度超过80 g的持续时间不应超过3 ms。利用有限元软件Altair HyperWorks对仪表板进行头碰仿真分析。首先进行试验与仿真对标,分析不同应变率对结果的影响;接着对仪表板模型进行结构优化,在满足头碰相关规定的基础上选择最优方案;最后进行试验验证。研究结果表明,应变率对结果有很大影响,利用仿真手段,可以找到最优优化方案,大大缩短了研发周期,且优化后的方案仿真与实验结果误差<12%。
According to the rules of GB 11552-2009 on instrument panel head impact,acceleration of the hammerhead should not exceed 3 ms when its duration exceeded 80 g.Head impact on instrument panel was simulated by using finite element software Altair HyperWorks.Firstly,the experiment and simulation were carried out to analyze the effect of different strain rates on the results.Secondly,the structure of instrument panel model was optimized,and the optimal scheme was selected on the basis of meeting the relevant provisions of the head impact.Finally,the experiment was carried out to verify the results.The results show that the strain rate has a great influence on the results.By means of simulation,the optimal optimization scheme can be found,the research and development cycle is greatly shortened,and the error between the optimized scheme simulation and the experimental results is less than 12%.
作者
孙正峰
蔡淑琼
李新
徐静
SUN Zheng-feng;CAI Shu-qiong;LI Xin;XU Jing(Technical Center,Chengdu Aerospace Mould&Plastic Co.,Ltd.,Sichuan 610100,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2020年第7期43-46,50,共5页
China Plastics Industry
关键词
应变率
仪表板
头碰
结构优化
Strain Rate
Instrument Panel
Head Impact
Structure Optimization
