Nonproportionally multiaxial cyclic plastic deformation of U75 rail steel: Experiment and modeling

被引：16
|
作者：
Xu, Xiang [1 ]
Ding, Li [1 ]
Miao, Hongchen [1 ]
Wen, Zefeng [2 ]
Chen, Rong [3 ]
Kan, Qianhua [1 ]
Kang, Guozheng [1 ]
机构：
[1] Southwest Jiaotong Univ, Sch Mech & Aerosp Engn, Appl Mech & Struct Safety Key Lab Sichuan Prov, Chengdu 611756, Sichuan, Peoples R China
[2] Southwest Jiaotong Univ, State Key Lab Tract Power, Chengdu 610031, Sichuan, Peoples R China
[3] Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Sichuan, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 168卷
基金：
中国国家自然科学基金;
关键词：
U75V rail steel; Nonproportionally additional hardening; Cyclic softening; hardening features; Ratcheting behavior; Constitutive model; VISCOPLASTIC CONSTITUTIVE MODEL; STAINLESS-STEEL; STRESS STATE; MICROSTRUCTURE; BEHAVIOR; IMPLEMENTATION; CEMENTITE; FAILURE;
D O I：
10.1016/j.ijfatigue.2022.107480
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
U75V rail steel exhibits cyclic softening and hardening under uniaxial and multiaxial strain-controlled cyclic loadings, respectively. The ratcheting behavior of U75V rail steel depends on the loading paths due to non-proportionally additional hardening. New evolution equations incorporating Tanaka's nonproportional param-eter are introduced into the isotropic and kinematic hardening rules of the cyclic plastic constitutive model to describe the cyclic softening/hardening features and multiaxial ratcheting behavior. The simulated results agree with the corresponding experimental results. A finite element model of wheel-rail cyclic rolling contact is established to investigate the nonproportionally multiaxial effect on the rolling contact fatigue life.
引用
收藏
页数：19
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