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

页数：19

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