【作者】 朱杰； 刘维； 黄尚宇； 邹希凡；

【Author】 Zhu Jie;Liu Wei;Huang Shangyu;Zou Xifan;Wuhan University of Technology;

【机构】 武汉理工大学；

【摘要】 由于等双轴拉伸试验或参数逆向识别方法的复杂性,采用平面应变试验与标准单轴拉伸试验相结合的方法,进行各向异性屈服函数的参数识别。针对Yld2000-2d屈服函数,分别基于等双拉试验数据和平面应变试验数据进行了参数识别,并将识别的Yld2000-2d屈服函数用于M-K模型,完成了AA5182-O铝合金和TRIP780钢两种板料成形极限的数值预测。通过与实验结果及Mises、Hill48屈服函数的对比,验证了Yld2000-2d屈服函数的准确性以及所提参数识别方法的有效性。更多还原

【Abstract】 Due to the complexity of equi-biaxial tensile test and parameter inverse identification, the method of plane strain test combined with standardized uniaxial tensile test is adopted for parameter identification of anisotropic yield function. For the Yld2000-2 d yield function, the parameters were respectively determined on the basis of equi-biaxial tensile test or plane strain test. The identified Yld2000-2 d yield functions were implemented in the M-K model to numerically predict the forming limit of AA5182-O alloy and TRIP780 steel sheets. By comparison with the experimental results and Mises, Hill48 yield functions, the Yld2000-2 d was validated to be accurate and the proposed identification method to be effective.更多还原