液体流动激励下拉(压)杆屈曲行为的研究  

A Study on Buckling Behavior of Tension and Compressioned-bars under the Disturbation of Running Liquid

作　　者：范慕辉[1] 焦永树[1] 刘波[1] 

机构地区：[1]河北工业大学机械学院,天津300130

出　　处：《河北工业大学学报》2002年第6期90-93,共4页Journal of Hebei University of Technology

基　　金：河北省教委博士基金资助项目

摘　　要：将内有流动液体的受拉(压)管件抽象成细长杆件,考虑了液体的流动速度对管件屈曲的影响,建立了相应的分岔微分方程,通过对方程的解析求解,得到了这类杆件发生各阶分岔的分岔值方程,并画出了各阶分岔值曲线.结果表明,在一定条件下,管内液体的流动对拉(压)杆的屈曲行为具有明显的影响.Taking into account the effect of running liquid on the buckling behavior of tension and compres-sioned-bars, the authorsestablished a differential equation describing the bifurcation phenomenon of this kind of slender bars. By solving the equa analytically, the bifurcation value equations were obtained and their solutions were presented graphically. The results show thatu certain circumstances, the running of liquid in pipes will affect the buckling behavior of pipes dramatically.

关 键 词：液体流动 屈曲行为 分岔值曲线 分岔微分方程 流动速度 拉杆 压杆 管件 钻井工程 钻柱 

分 类 号：O344[理学—固体力学] TE921[理学—力学]