Full Characterization of the Work-Hardening Behavior of Metals:An Accurate and Explicit Approach  

作　　者：Zan Zhou Siyu Wang Lin Zhan Huifeng Xi Heng Xiao 

机构地区：[1]School of Mechanics and Construction Engineering and MOE Key Lab of Disaster Forecast and Control in Engineering,Jinan University,Guangzhou 510632,China [2]Shanghai Institute of Applied Mathematics and Mechanics&School of Mechanics and Engineering Science,Shanghai University,Shanghai 200072,China

出　　处：《Acta Mechanica Solida Sinica》2020年第4期479-486,共8页固体力学学报（英文版）

基　　金：This study was carried out under the support of the start-up fund from Jinan University(Guangzhou);the fund from the Natural Science Foundation of China(No.11372172).

摘　　要：A new approach is proposed to characterize the work-hardening behavior of metals based on the stress-strain data from uniaxial extension testing.With this new approach,the yield strength as a function of the plastic work can be determined by directly fitting a wellchosen single-variable shape function to any given uniaxial data from the initial yielding up to the strength limit,in an explicit sense with no need to carry out the usual tedious trial-and-error procedures in treating nonlinear elastoplastic rate equations toward identifying numerous unknown parameters.Numerical examples show that the simulation results with the new approach are in accurate agreement with the test data.

关 键 词：METALS Elastoplasticity Finite strain WORK-HARDENING Yield strength Strength limit Explicit characterization 

分 类 号：TG111.8[金属学及工艺—物理冶金]