摘要
实际工程结构中的细长杆受压时,当存在初始挠度及中间弹性支撑时,不能用经典的欧拉公式计算杆件的屈曲临界载荷。利用有限元软件ANSYS对实际工程结构进行非线性屈曲分析,能够考虑到杆件的初始挠度以及中间弹性支撑对临界失稳载荷的影响。计算结果表明:机车径向转向架耦合杆初始挠度为10 mm时,对应的临界失稳载荷相对欧拉公式计算结果减小7%;若采用中间弹性支撑时,大大提高了杆件的轴向承载能力,临界失稳载为原方案的2.8倍。
When the buckling critical load of compressive bar with an initial deflection and intermediate elastic support is calculated,the classical Euler formula for buckling analysis cannot be used.In thispaper,we de non-linear buckling analysis of engineering structures with software of ANSYS and the initial deflection and the intermediate elastic support can be taken into account.The results show： The critical buckling load of the locomotive coupling rod with the initial deflection of 10 mm reduce 7% compare to the result of Euler formula.The stability of compressive bar can greatly increase with intermediate elastic support,and the critical buckling load is 2.8 times the original structure.
出处
《机械》
2011年第6期1-4,共4页
Machinery
基金
国家自然科学基金(51075339)
牵引动力国家重点实验室自由探索自主研究课题(2008TPL-T05)资助项目
关键词
屈曲分析
压杆稳定
初始挠度
中间弹性支撑
ANSYS
buckling analysis
stability of compressive bar
initial deflection
intermediate elastic support
ANSYS
