摘要
针对核工业中采用的锆金属合金管材截面的扁化现象带来的材料性能下降的问题,采用弹塑性力学和刚柔耦合理论方法,研究了管材刚柔耦合时矫直行程的问题,建立了管材刚柔耦合矫直时矫直行程的数学模型,并进行实验验证,实验结果证明使用柔性压头能够改善管材截面扁化的现象。为以后薄壁管材的矫直提供了理论参考。
In recent years,there has been a sharp increase in demand for zirconium metal alloy pipes in the nuclear industry.However,flattening of pipe sections can seriously affect the properties of such pipes.Therefore,this paper investigates the problem of straightening stroke when rigid-flexible coupling of pipe is carried out,using elastic-plastic mechanics and rigid-flexible coupling theory.Experimental verification is conducted.The study concludes that the use of a flexible indenter can improve the phenomenon of cross section flattening in pipes.
作者
覃尧青
凌鹤
QIN Yaoqing;LING He(School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan 430070,China)
关键词
薄壁管材
刚柔耦合
矫直
截面扁化
有限元分析
thin-walled pipes
rigid-flexible coupling
straighten
section flattening
finite element analysis
