摘要
为模拟碰撞实验中的加速度波形的要求,以金属圆管扩胀变形原理,通过不同壁厚圆管的分段组合形式研究了波形发生器的设计方法。用实物的标定实验和有限元仿真计算相结合的方法,运用正交实验设计方法,分析了金属圆管扩胀变形的影响因素,并分析了壁厚、扩径量、碰撞质量等主要因素的影响规律。结合实际的算例,验证了设计方法的有效性。相关结论可以为类似的碰撞波形发生器的设计提供理论参考。
In order to simulate the acceleration pulse in impact tests, the design method of the acceleration pulse generator by the multi-segment tubes with different thicknesses based on the theory of metal tubes press expansion was researched. The method which combines the impact tests and the finite element simulations were adopted. The influence factors of metal tubes press expansion including the thickness, the expansion distance and the sled mass were analysed by the orthogonal experimental design method. The engineering application proves the design method valid. The relative conclusions can be procided as an analysis reference for the similar acceleration pulse generators.
出处
《机械设计与研究》
CSCD
北大核心
2007年第1期98-100,113,共4页
Machine Design And Research
关键词
波形发生器
金属圆管
扩胀变形
正交实验
pulse generator
metal tube
press expansion
orthogonal experimental design
作者简介
杜汇良,E-mail：DHL@tsinghua．edu．cn 杜汇良（1974-），副研究员；主要研究方向为汽车碰撞安全及乘员安全防护，发表论文20篇；曾获得中国汽车行业科技进步二等奖等。
