Prediction about Ratcheting Strain of Thin-walled Tube under Cyclic Inner Pressure
Jiao Rong,Chen Xu
(School of Chemical Engineering & Technology, Tianjin University,300072)

Abstract: It is difficult to predict ratcheting effect under uniaxial and proportional loading. This paper considers the modification of combined moving bounding surface with superposed kinematic hardening rule in two-surface constitutive model of materials. The hoop ratcheting strain of 1Cr18Ni9Ti stainless steel tube with hundreds cycles can be simulated.
Keyword: constitutive model, ratcheting strain, cyclic plasticity.