不同屈服准则对MP980钢和5182-O铝合金塑性各向异性描述能力研究  

Study on the ability of different yield criteria to describe the plastic anisotropy of MP980 steel and 5182-O aluminum alloy

作　　者：张昊 都凯 孙剑 王海波 李小强[4] 郑文涛[1] 黄绍辉 袁晓光[1] ZHANG Hao;DU Kai;SUN Jian;WANG Hai-bo;LI Xiao-qiang;ZHENG Wen-tao;HUANG Shao-hui;YUAN Xiao-guang(School of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110870,China;Department of Technical Planning Press Shop,BMW Brilliance Automotive Co.,Ltd.,Shenyang 100044,China;School of Mechanical and Materials Engineering,North China University of Technology,Beijing 100144,China;School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China)

机构地区：[1]沈阳工业大学材料科学与工程学院,辽宁沈阳110870 [2]华晨宝马汽车有限公司冲压车间技术规划,辽宁沈阳100044 [3]北方工业大学机械与材料工程学院,北京100144 [4]北京航空航天大学机械工程及自动化学院,北京100191

出　　处：《塑性工程学报》2023年第1期130-139,共10页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51875365,52075025);北京市教育委员会、北京市自然科学基金委员会联合资助项目(KZ200010009041);辽宁省博士科研启动基金计划项目;宝马集团中国学院英才发展计划。

摘　　要：基于MP980钢和5182-O铝合金沿轧制方向成不同角度的单轴拉伸和不同加载路径下的十字型试样双轴拉伸实验数据,通过计算测量数据与不同材料模型预测的单轴拉伸屈服应力与r值、等双轴拉伸屈服应力与r值和塑性功轮廓线的预测误差进行定量评估,分析了使用不同材料参数识别策略的Hill48、新数学形式的Barlat91(New)和Yld2000-2d各向异性屈服准则在描述塑性各向异性方面的能力,评价了这些材料模型的有效性和适用性。结果表明,使用应力各向异性数据识别材料参数,在描述与应力相关的实验数据时更为精确,使用变形各向异性数据识别材料参数,在描述r值时更加精确。包含更多材料参数的Yld2000-2d屈服准则相比于Hill48和Barlat91(New)可以更精确地反映两种板材的各向异性屈服行为。在使用完全相同的力学性能识别屈服准则的材料参数时,高阶模型对塑性功轮廓线具有更高的预测精度。Based on the experimental data of uniaxial tension with different angles along the rolling direction and cruciform specimen biax-ial tension under different loading paths of MP980 steel and 5182-O aluminum alloy,through calculating the measured data and the pre-diction errors of uniaxial tensile yield stresses and r-values,equi-biaxial tensile yield stress and r-value,and plastic work contours predic-ted by different material models for quantitatively evaluating,the abilities of Hill48,Barlat 91(New)with different material parameter i-dentification strategies,and Yld2000-2d anisotropic yield criteria to describe plastic anisotropy were analyzed.The effectiveness and ap-plicability of these material models were evaluated.The results show that using stress anisotropy data to identify material parameters is more accurate in describing stress-related experimental data,and using deformation anisotropy data to identify material parameters is more accurate in describing r-values.Compared with the Hill48 and Barlat91(New),the Yld2000-2d yield criterion,which accommodates more material parameters,can more accurately reflect the anisotropic yield behavior of the two blanks.When the same mechanical properties are used to identify the material parameters of the yield criterion,the higher-order model has higher prediction accuracy for the plastic work contours.

关 键 词：屈服准则 商用汽车板材 参数识别策略 塑性功轮廓线 各向异性行为 

分 类 号：TG301[金属学及工艺—金属压力加工]