先进高强度双相钢板料成形极限研究  

Study on Forming Limit of Advanced High Strength Dual-phase Steel Sheet

作　　者：马春辉 张殿平[1] 贡泽飞 刘兴峰 付秋涛 李迪[2] MA Chunhui;ZHANG Dianping;GONG Zefei;LIU Xingfeng;FU Qiutao;LI Di(Institute of technology,China National Heavy Duty Truck Group Co.,Ltd.,Ji′nan 250101,China;School of Traffic and Vehicle Engineering,Shandong University of Technology,Zibo 255000,Shandong,China)

机构地区：[1]中国重型汽车集团有限公司工艺研究院,济南250101 [2]山东理工大学交通与车辆工程学院,山东淄博255000

出　　处：《机械科学与技术》2024年第10期1806-1813,共8页Mechanical Science and Technology for Aerospace Engineering

基　　金：中国重汽产学研合作计划(20200810)。

摘　　要：随着先进高强度双相钢的工业需求量日益增加,亟需实现双相钢板料成形极限曲线的精确预测,由于根据国标采用的胀形试验较难准确获取FLC_(0)点使FLC不准确。本文基于DP590、DP780、DP980、DP1180在常温下的胀形试验结果,结合MMC断裂模型的数值模拟,建立了4种板料的胀形断裂预测模型,通过模拟准确求出FLC_(0),结合试验数据,建立了基于MMC断裂准则的成形极限曲线(FLC),并进行参数化研究。结果表明,基于MMC准则的成形极限曲线拥有较好的准确性。In order to accurately predict the forming limit curve of advanced high-strength dual-phase steel,the MMC fracture model which can accurately predict the shear fracture effect was substituted into the numerical simulation.According to the Nakazima test results and numerical simulation of DP590,DP780,DP980 and DP1180 at room temperature,the Nakazima fracture prediction models for four kinds of steel sheets were established,and the FLC_(0)was accurately calculated via simulation.The forming limit curve(FLC)based on MMC fracture criterion was established and parameterized.The results show that the forming limit curve based on MMC criterion has higher accuracy.

关 键 词：先进高强度双相钢 成形极限 胀形试验 修正摩尔库伦准则 数值模拟 

分 类 号：TG142.1[一般工业技术—材料科学与工程]