Stress distribution and fatigue life of built-up sleeved backup roll  

作　　者：朱忠英 孙登月 许石民 

机构地区：[1]National Engineering Technology Research Center of Cold Rolling Strip Equipment and Technology,Yanshan University

出　　处：《Journal of Central South University》2012年第8期2173-2178,共6页中南大学学报（英文版）

基　　金：Project(E2010001155) supported by the Natural Science Foundation of Hebei Province, China

摘　　要：The advantage of built-up sleeved backup roll was described. Based on the stress distribution analysis and simulation for the built-up sleeved backup roll by using finite element method, the effects of roll sleeve thickness and shrink range on the stress-strain field were studied. Finally, based on the methodology and strategy of the fatigue analysis, fatigue life of backup roll was estimated by using the stress-strain data obtained through finite element simulation. The results show that roll sleeve thickness and shrink range have a great influence on sleeve stress distribution of built-up sleeved roll. Under the circumstance of ensuring transferring enough torque, the shrink range should be kept small. However, thicker roll sleeve has longer roll service life when the shrink range is constant.The advantage of built-up sleeved backup roll was described. Based on the stress distribution analysis and simulation for the built-up sleeved backup roll by using finite element method, the effects of roll sleeve thickness and shrink range on the stress-strain field were studied. Finally, based on the methodology and strategy of the fatigue analysis, fatigue life of backup roll was estimated by using the stress-strain data obtained through finite element simulation. The results show that roll sleeve thickness and shrink range have a great influence on sleeve stress distribution of built-up sleeved roll. Under the circumstance of ensuring transferring enough torque, the shrink range should be kept small. However, thicker roll sleeve has longer roll service life when the shrink range is constant.

关 键 词：built-up sleeved backup roll stress-strain analysis finite element method shrink range fatigue life 

分 类 号：TG333.17[金属学及工艺—金属压力加工]