钢轨螺栓螺纹根部圆弧半径对螺栓强度的影响  

INFLUENCE OF THE RADIUS OF SCREW THREAD ROOTS FOR THE STRENGTH OF RAIL BOLT

作　　者：薛强[1] 苗德华[1] 汪文颖[1] 

机构地区：[1]天津科技大学机械工程学院,天津300222

出　　处：《天津科技大学学报》2004年第1期52-54,共3页Journal of Tianjin University of Science & Technology

基　　金：天津市自然科学基金资助项目(023650511)

摘　　要：应用有限元方法研究了螺纹根部圆弧半径对螺栓强度的影响,通过改变圆弧半径缓解螺纹根部的应力集中,改善了应力分布,从而实现提高螺栓疲劳强度的目的.By using Finite Element Analysis method, this paper investigates the influence of the radius of screw thread roots for the strength of rail bolt. Through changing the radius of screw thread roots, the stress concentration was reduced, and the stress distributing was also ameliorated. So the fatigue strength of the rail bolt was improved.

关 键 词：有限元法 钢轨 螺栓 圆弧半径 螺栓强度 应力集中 螺纹根部 

分 类 号：U213.52[交通运输工程—道路与铁道工程]