薄壁圆筒碰撞承载力影响因素研究  

Research on the factors affecting impact force of thin-walled tubes

作　　者：刘怡[1] 

机构地区：[1]西南交通大学峨眉校区

出　　处：《西南民族大学学报（自然科学版）》2008年第4期763-766,共4页Journal of Southwest Minzu University(Natural Science Edition)

摘　　要：随着列车运行速度的提高,列车被动安全性受到越来越多的重视.金属薄壁圆筒既可以做为高速列车车体的简化模型,又可以做为能量吸收装置的模型.本文对薄壁圆筒轴对称屈曲时的平均承载力的三个近似公式进行了比较,研究了圆筒直径、厚度和碰撞速度对平均承载力的影响.It＇s more and more important to research the passive security of high speed train when the speed of the train is higher and higher. The thin-walled tube is a simplified model of whole train and is also a good model of energy absorbing device. The average forces are calculated and compared when the thin-walled tubes are axis-symmetric buckling. The effect of diameter thickness and impact velocity on average bearing forrce is researched.

关 键 词：圆筒 冲击 屈曲 承载力 

分 类 号：O324[理学—一般力学与力学基础]