Application and comparison of different anisotropic yield criteria in the formability analysis of aluminum sheet  

作　　者：HU Xiao YANG Bing LU Xu 

机构地区：[1]New Material Industry Innovation Center,China Baowu Steel Group Co.,Ltd.,Shanghai 201999,China

出　　处：《Baosteel Technical Research》2020年第4期1-13,共13页宝钢技术研究（英文版）

摘　　要：The application of four widely used anisotropic yield criteria,namely,Hill'48,Hill'90,Barlat'89,and Yld2000,on the formability analysis of an automobile aluminum sheet is investigated. The applicability and reliability of these four yield criteria are identified on the basis of uniaxial tensile and stamping tests of an aluminum covering panel by embedding the specimen in the corresponding finite element models. Results show that the strain distribution and safety margin of the aluminum sheet after stamping can be predicted with a high accuracy by applying Yld2000 compared to those subjected to the three other yield criteria. The significant effects of the anisotropic plastic characteristics of the aluminum sheet on stamping are discussed by applying the advanced simulation technology.

关 键 词：aluminum alloy sheet anisotropic yield criteria STAMPING formability analysis 

分 类 号：TG146.21[一般工业技术—材料科学与工程]