Bauschinger Effect and its Influence on Residual Stress of a Twinning Induced Plasticity Steel
The Bauschinger effect(BE)of a twinning induced plasticity(TWIP)steel sheet was measured by shear plus reverse shear experiment.Digital image correlation(DIC)technique was used to get the corresponding stress-strain curve and then the exact yield stress was determined.Kinematic hardening of TWIP steel was about one-third of total hardening.Further,the backstress contributes about 13 percent to the total flow stress and prone to saturate with increasing strain.The effect of BE on residual stress was evaluated by the commercial finite element analysis software(ABAQUS)by using the case of cup drawing.The results showed that residual stress after forming was smaller when taking BE into consideration.
bauschinger effect TWIP steel cup drawing digital image correlation
Luo Z. C. Huang M. X.
Shenzhen Institute of Research and Innovation,University of Hong Kong,Shenzhen,China;Department of Mechanical Engineering,University of Hong Kong,Hong Kong,China
国内会议
上海
英文
1-4
2015-10-21（万方平台首次上网日期，不代表论文的发表时间）