Ratcheting behaviors of SA508-3 steel at elevated temperature:experimental observation and simulation
A series of monotonic uniaxial tensile tests, strain-controlled tests and stress-controlled tests of SA508-3steel were conducted at temperature range from 25℃ to 350℃ firstly.Results show that the steel exhibits temperature dependent cyclic softening characteristic and obvious ratcheting behaviors, and dynamic strain age was observed in range of 250℃ to 350℃.Based on experimental observations, a temperature dependent cyclic plastic constitutive model was proposed by introducing the nonlinear cyclic softening and kinematic hardening rules, and the dynamic strain age was also considered into the constitutive model.Comparisons between experiments and simulations were carried out to validate the proposed model at elevated temperature.
Ratcheting constitutive model dynamic strain age cyclic loading elevated temperature
Jun Tian Yu Yang Liping Zhang Tao Fang Qianhua Kan
Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of Chi Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and E
国际会议
长沙
英文
49-54
2016-10-16（万方平台首次上网日期，不代表论文的发表时间）