Derivation of Plastic Specific Work Rate for Equal Area Yield Criterion and Its Application to Rolling  

作　　者：ZHAO De-wen FANG Qi LI Can-ming LIU Xiang-hua WANG Guo-dong 

机构地区：[1]State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China

出　　处：《Journal of Iron and Steel Research International》2010年第4期34-38,共5页

基　　金：Item Sponsored by National Natural Science Foundation of China(50474015);RAL Self-Determination Science Foundation of China(RAL-SD-2008-2)

摘　　要：On the basis of the analysis of the hexagons inscribed and circumscribed of the Mises yield circle on the π- plane in Haigh Westergaard stress space, a new equation called equal area linear yield criterion or EA criterion was proposed, and its plastic specific work rate was derived. Then, a generalized worked example of plate rolling was analyzed by the criterion and its corresponding plastic specific work rate. Finally, the precision of the solution was compared with measured roll separation force in plate finish rolling process. It indicates that the calculated results by EA criterion are slightly higher than the measured ones.On the basis of the analysis of the hexagons inscribed and circumscribed of the Mises yield circle on the π- plane in Haigh Westergaard stress space, a new equation called equal area linear yield criterion or EA criterion was proposed, and its plastic specific work rate was derived. Then, a generalized worked example of plate rolling was analyzed by the criterion and its corresponding plastic specific work rate. Finally, the precision of the solution was compared with measured roll separation force in plate finish rolling process. It indicates that the calculated results by EA criterion are slightly higher than the measured ones.

关 键 词：EA yield criterion specific work rate finish rolling analytical solution 

分 类 号：TU330.2[建筑科学—结构工程] TG334.9[金属学及工艺—金属压力加工]