摘要
旋轮拉轧工艺成形件的残余应力较大,严重影响其使用寿命。针对此问题,使用ABAQUS/Explicit对旋轮拉轧过程进行有限元分析,采用单因素控制法,以Q235钢为研究对象,建立了旋轮拉轧的有限元数值模型,分析了应力形成过程及其分布规律,并且探究了不同进给比、压下量以及主轴转速对成形件三向残余应力的影响规律。通过试验数据与仿真结果对比,验证了仿真设置的准确性。结果表明:在旋轮拉轧过程中,旋轮与管坯接触处的应力最大,变形区的轴向应力表现为拉应力,切向应力表现为拉应力与压应力交替出现,径向应力表现为压应力;轧后成形件的三向(轴向、切向、径向)残余应力随着进给比、压下量以及主轴转速的增大而增大;仿真结果与试验结果之间的误差小于5%,从而验证了模拟结果的可靠性。
The residual stress of part formed by rotary wheel drawing rolling process is relatively large,which seriously affects its service life.Therefore,in order to solve this problem,the finite element analysis of rotary wheel drawing rolling process was conducted by using ABAQUS/Explicit,and for Q235 steel,the finite element numerical model of rotary wheel drawing rolling was established by single factor control method.Then,the formation process of stress and its distribution law were analyzed,and the influence laws of different feeding ratios,reduction amounts and main spindle rotation speeds on the triaxial residual stresses of formed parts were investigated.Furthermore,by comparing the test data with the simulation results,the accuracy of the simulation settings was verified.The results show that during the rotary wheel drawing rolling process,the stress at the contact point between rotary wheel and tube blank is the largest,the axial stress in the deformation zone is expressed as tensile stress,the tangential stress is expressed as tensile stress and compressive stress alternately,and the radial stress is expressed as compressive stress.The triaxial residual stresses(axial,tangential and radial directions)of formed parts after rolling increase with the increasing of feeding ratio,reduction amount and main spindle rotation speed.The error between the simulation and test results is less than 5%,which verifies the reliability of the simulation results.
作者
王琛
姚东方
张斌凯
田壮壮
赵春江
双远华
Wang Chen;Yao Dongfang;Zhang Binkai;Tian Zhuangzhuang;Zhao Chunjiang;Shuang Yuanhua(College of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;College of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)
出处
《锻压技术》
CAS
CSCD
北大核心
2023年第4期86-94,共9页
Forging & Stamping Technology
基金
太原科技大学科研启动基金资助(20202076)
山西省基础研究计划资助项目(202103021223275)
山西省优秀来晋博士科研资助项目(20212059)
太原科技大学大学生创新项目(XJ2022060)。
关键词
旋轮拉轧
进给比
压下量
主轴转速
应力
rotary wheel drawing rolling
feeding ratio
reduction amount
main spindle rotation speed
stress
