基于有限元法活塞杆应力集中的研究  

Stress concentration of the piston rod based on Finite element method

作　　者：王成刚[1] 王小雨[1] 郑晓敏[1] 高九阳[1] 谢晓恒[1] 

机构地区：[1]武汉工程大学机电工程学院,湖北武汉430074

出　　处：《武汉工程大学学报》2011年第1期88-90,95,共4页Journal of Wuhan Institute of Technology

摘　　要：针对机械振打器活塞杆易于断裂的情况,利用有限元方法对气化炉机械振打器活塞杆的断裂进行了研究,得出了活塞杆Von-mises应力云图以及几何突变处不同的倒角半径对应的最大应力值.结果表明:活塞杆的最大应力发生在截面的几何突变处,且最大应力值随着倒角半径的增加而减小.其结果有助于对危险部位失效进行可行性预测,此预测对活塞杆的结构设计具有重要意义.Based on the actual working conditions,the performance of piston rod about rapping device of gasifier were analyzed by using finite element method, obtained the Von-mises stress contour of piston rod and the maximum stress value of the different fillet radius at the varying cross-section. The results show that the maximum stress of piston rod occurred in the varing cross-section, and the maximum stress increases as the fillet radius decreases. The results was helpful to conduct a feasibility prediction for the risk cross-section, which is important for the the structural design of the piston rod.

关 键 词：非线性 有限元法 活塞杆 应力集中 倒角半径 

分 类 号：TH113.1[机械工程—机械设计及理论]