中南大学学报（自然科学版）2018，Vol.49Issue(1)：87-94,8.DOI:10.11817/j.issn.1672-7207.2018.01.012
考虑包辛格效应的辊式矫直截面反弯特性
Reverse bending behavior of section during roller leveling process considering Bauschinger effect
摘要
Abstract
Based on the basic theory of elastic-plastic bending, a mechanical model of complicated bending process of the section under different degrees of Bauschinger effect (KBa) was built by taking the second bend of the plate bears after bited into the leveler as an example. The effect of KBa on the M-C and ξ-C relation and residual stress distribution could be gotten through the model calculation, which could prove that the reverse bending behavior of the elastic-plastic bending section, after experiencing several times of deformation during roller leveling process, was affected by the Bauschinger effect of the material. And more pronounced was gotten with the increase of the strength coefficient of the material. Finally, the residual curvatures of materials with different KBa under the same process conditions were calculated and the effect of KBa on it were gotten. The results show that the Bauschinger effect should be considered when roller leveling with the coefficient of the material is big(η>0.01) and KBa of the material needs to be firstly determined when process parameters in actual production are determined.关键词
包辛格效应/辊式矫直/强化系数/弯矩-曲率/残余应力Key words
Bauschinger effect/roller leveling/strength coefficient/moment-curvature/residual stress分类
矿业与冶金引用本文复制引用
马晓彬,张杰,李洪波,周一中,胡伟东,张中伟..考虑包辛格效应的辊式矫直截面反弯特性[J].中南大学学报（自然科学版）,2018,49(1):87-94,8.基金项目
国家"十二五"科技支撑计划项目(2015BAF30B01) (Project(2015BAF30B01) supported by the National Key Technology R&D Program of the 12th Five-Year Plan of China) （2015BAF30B01）
