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所属单位：能源与动力学院

发表刊物：Tuijin Jishu

摘要：In order to study the inelastic response behaviors of GH4169 alloy under different loading conditions at high temperature, the uniaxial tension and low cycle fatigue tests were carried out at 650℃. The Bodner-Partom (B-P) unified constitutive theory was used to simulate the mechanical behaviors of GH4169 alloy. Through the experiment, the uniaxial tension stress-strain data and the cyclic stress-strain data at the half-strain amplitudes of 0.65%, 0.75%, and 0.85% were obtained. Based on the B-P theory and the finite element method, the new implicit integration algorithm for constitutive equations were studied by introducing a reduction factor that is between 0 and 1. The B-P model was implemented in ABAQUS software through UMAT subroutine. Numerical simulation curves of GH4169 alloy under different loading conditions were calculated. The calculated results agree well with the experimental results, indicating that the B-P model can reasonably describe such kinds of high temperature mechanical behaviors of GH4169 alloy, and verify the integrity of the B-P model and the correctness of the program. © 2019, Editorial Department of Journal of Propulsion Technology. All right reserved.

ISSN号：1001-4055

是否译文：否

发表时间：2019-02-01

合写作者：Lu, Kong-Han,Jia, Peng-Chao

通讯作者：张宏建