基于ANSYS的宽厚板压力矫直F-δ模型研究及矫直行程计算  

Research on pressure straightening F-δ model of wide-heavy plates and calculation of straightening stroke based on ANSYS

作　　者：徐欢 李然[1] 袁海兵[1] 王生怀[1] XU Huan;LI Ran;YUAN Haibing;WANG Shenghuai(School of Mechanical Engineering,Hubei University of Automotive Technology,Shiyan 442002,Hubei,China)

机构地区：[1]湖北汽车工业学院机械工程学院,湖北十堰442002

出　　处：《钢铁研究学报》2024年第8期1042-1049,共8页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(51675167);湖北省教育厅科研资助项目(Q20201806)。

摘　　要：为了解决宽厚板矫直的平直度问题,基于“三点反弯”矫直原理,对宽厚板压力矫直过程进行了深入研究;运用弹塑性变形理论,建立了宽厚板加载点截面处“弹性变形→弹塑性变形→塑性变形→弹性回弹”4阶段集中载荷-挠度(F-δ)模型,并确定了宽厚板被矫直时的反弯挠度和矫直行程;根据4阶段集中载荷-挠度(F-δ)模型计算得到的矫直行程,利用ANSYS有限元法,对不同尺寸规格的宽厚板进行了压力矫直有限元仿真试验,仿真结果表明,采用4阶段集中载荷-挠度(F-δ)模型,加载点截面处的残余挠度控制在3%以内,沿弯曲方向的平直度控制在5mm/m以内,验证了4阶段集中载荷-挠度(F-δ)模型在宽厚板压力矫直中的可行性。In order to solve the flatness problem of wide-heavy plates during straightening,a thorough study was conducted on the pressure straightening process based on the“three-point reverse bending”straightening principle.Application of elastic-plastic deformation theory,a four-stage concentrated load-deflection(F-δ)model was established for the cross-section at the loading point,describing the“elastic deformation→elastic-plastic deformation→plastic deformation→elastic rebound”process.This model was used to determine the reverse bending deflection and the straightening stroke of wide-heavy plates during the straightening process.Based on the calculated straightening stroke from the four-stage concentrated load-deflection(F-δ)model,pressure straightening finite element simulation tests were carried out on wide-heavy plates of different size specifications using the ANSYS finite element method.The simulation results show that by adopting the four-stage concentrated load-deflection(F-δ)model,the residual deflection at the loading point cross-section is controlled within 3%,and the flatness along the bending direction is controlled within 5mm/m,verifying the feasibility of the four-stage concentrated load-deflection(F-δ)model in the pressure straightening of wide-heavy plates.

关 键 词：宽厚板 三点反弯 压力矫直 F-δ模型 矫直行程 有限元分析 

分 类 号：TG306[金属学及工艺—金属压力加工]