带钢拉伸弯曲矫直表面残余应力预测模型  

Prediction model of residual stress on surface of strip steel after tension levelling

作　　者：孙世杰 周存龙[1] 魏东 李国栋 王天翔 廖席 赵永顺 SUN Shi-jie;ZHOU Cun-long;WEI Dong;LI Guo-dong;WANG Tian-xiang;LIAO Xi;ZHAO Yong-Shun(Shanxi Provincial Key Laboratory of Metallurgical Device Design Theory and Technology,College of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Shanxi TISCO Stainless Steel Precision Strip Co.,Ltd.,Taiyuan 030024,China)

机构地区：[1]太原科技大学机械工程学院,山西省冶金设备设计理论与技术重点实验室,山西太原030024 [2]山西太钢不锈钢精密带钢有限公司,山西太原030024

出　　处：《塑性工程学报》2024年第12期116-123,共8页Journal of Plasticity Engineering

基　　金：国家自然科学基金面上资助项目(52375361);中央引导地方科技发展资金资助项目(YDZJSX2021A006);山西省科技创新人才团队项目(2022040511002007);山西省基础研究计划项目(202203021222192);山西省科技重大专项项目(20181102015)。

摘　　要：基于弹塑性弯曲变形理论建立了带钢在拉伸弯曲矫直后长度方向上残余应力的预测模型,并通过Abaqus大型有限元模拟软件及相关试验对该理论模型进行验证。结果表明:在带钢试样表面初始应力在-192.95~182 MPa范围内且呈“W”型分布的情况下,设置矫直工艺为张力比为0.2、压下量为5 mm,经过一次拉伸弯曲矫直后试样表面残余应力均降低到-100 MPa以下,且在宽度方向上分布幅值平均值降低至42.98 MPa;预测模型计算结果与试验结果、模拟结果的平均误差分别为17.79%和11.18%。The prediction model for the residual stress in the length direction of the steel strip after tension levelling was establishesd based on elastic and plastic deformation theory.The theoretical model was verified by Abaqus large-scale finite element simulation software and related tests.The results show that when the initial stress on the surface of the strip steel sample is within the range of-192.95-182 MPa and exhibits a"W"distribution,setting the straightening process of the tension ratio of 0.2 and the reduction of 5 mm,the residual stress on the surface of the sample after one tension levelling and recovery decreases to below-100 MPa,and the average value of the distribu-tion amplitude in the width direction decreases to 42.98 MPa.The average errors between the calculation results of the prediction model and the test results and simulation results are 17.79%and 11.18%,respectively.

关 键 词：带钢 拉伸弯曲矫直 残余应力 

分 类 号：TG142.7[一般工业技术—材料科学与工程]