Alleviation for contact stresses in curvic attachments  

作　　者：蒋翔俊 张优云 王鑫 袁淑霞 

机构地区：[1]Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System,Xi'an Jiaotong University

出　　处：《Journal of Harbin Institute of Technology(New Series)》2011年第5期65-70,共6页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Basic Research Program of China (Grant No.2007CB707705 and 2007CB707706)

摘　　要：This paper studied the contact stresses in curvic attachments.The principal purpose of this research is to employ a method of alleviating the fluctuating hoop stresses which can be considered to be a major contribution to fatigue failure in curvic attachments.This method entails novel precision geometry of the contacting flat on curvic which is a tactic to get appropriate arc heights in in-plane direction as well as vary radius in out-of-plane direction.The dimensional finite elements in both directions were analyzed.These analysis results indicated that significant reduction in fluctuating hoop stresses can be achieved by the proposed method,provided that the precision geometry is controlled sufficiently precisely.This paper studied the contact stresses in curvic attachments. The principal purpose of this research is to employ a method of alleviating the fluctuating hoop stresses which can be considered to be a major contri- bution to fatigue failure in curvie attachments. This method entails novel precision geometry of the contacting flat on eurvic which is a tactic to get appropriate arc heights in in-plane direction as well as vat/radius in out- of-plane direction. The dimensional finite elements in both directions were analyzed. These analysis results in- dicated that significant reduction in fluctuating hoop stresses can be achieved by the proposed method, provided that the precision geometry is controlled sufficiently precisely.

关 键 词：curvic attachments stress analysis finite element analysis 

分 类 号：TH12[机械工程—机械设计及理论]