An efficient approach to the analysis of rail surface irregularities accounting for dynamic train-track interaction and inelastic deformations

被引：15

作者：

Andersson, Robin ^{[1
]}

Torstensson, Peter T. ^{[1
]}

Kabo, Elena ^{[1
,2
]}

Larsson, Fredrik ^{[1
]}

机构：

[1] Chalmers Univ Technol, CHARMEC Dept Appl Mech, S-41296 Gothenburg, Sweden

[2] Qamcon Res & Technol AB, Gothenburg, Sweden

来源：

VEHICLE SYSTEM DYNAMICS | 2015年 / 53卷 / 11期

关键词：

RCF; rail surface irregularities; dynamic vehicle-track interaction; squats; ROLLING-CONTACT FATIGUE; SQUAT; WHEEL; PREDICTION; VALIDATION; BEHAVIOR; FORCES; CRACKS; DAMAGE; MODEL;

D O I：

10.1080/00423114.2015.1081701

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A two-dimensional computational model for assessment of rolling contact fatigue induced by discrete rail surface irregularities, especially in the context of so-called squats, is presented. Dynamic excitation in a wide frequency range is considered in computationally efficient time-domain simulations of high-frequency dynamic vehicle-track interaction accounting for transient non-Hertzian wheel-rail contact. Results from dynamic simulations are mapped onto a finite element model to resolve the cyclic, elastoplastic stress response in the rail. Ratcheting under multiple wheel passages is quantified. In addition, low cycle fatigue impact is quantified using the Jiang-Sehitoglu fatigue parameter. The functionality of the model is demonstrated by numerical examples.

引用

页码：1667 / 1685

页数：19

共 23 条

[1] Fatigue behaviour of rail steel -: a comparison between strain and stress controlled loading [J].

Ahlström, J ;

Karlsson, B .

WEAR, 2005, 258 (7-8) :1187-1193

[2] The influence of rail surface irregularities on contact forces and local stresses [J].

Andersson, Robin ;

Torstensson, Peter T. ;

Kabo, Elena ;

Larsson, Fredrik .

VEHICLE SYSTEM DYNAMICS, 2015, 53 (01) :68-87

[3] Numerical stress analysis of rail rolling contact fatigue cracks [J].

Bogdanski, S ;

Olzak, M ;

Stupnicki, J .

WEAR, 1996, 191 (1-2) :14-24

[4] Modelling the three-dimensional behaviour of shallow rolling contact fatigue cracks in rails [J].

Bogdanski, S ;

Brown, MW .

WEAR, 2002, 253 (1-2) :17-25

[5] METALLURGICAL ASPECTS OF SURFACE DAMAGE PROBLEMS IN RAILS [J].

CLAYTON, P ;

ALLERY, MBP .

CANADIAN METALLURGICAL QUARTERLY, 1982, 21 (01) :31-46

[6] Fatigue of railway wheels and rails under rolling contact and thermal loading - an overview [J].

Ekberg, A ;

Kabo, E .

WEAR, 2005, 258 (7-8) :1288-1300

[7] Stress intensity factors around a 3D squat form crack and prediction of crack growth direction considering water entrapment and elastic foundation [J].

Farjoo, Mohammadali ;

Pal, Sarvesh ;

Daniel, William ;

Meehan, Paul A. .

ENGINEERING FRACTURE MECHANICS, 2012, 94 :37-55

[8] Numerical simulation of near surface rail cracks subject to thermal contact stress [J].

Fletcher, David I. .

WEAR, 2014, 314 (1-2) :96-103

[9] A model for rolling contact failure [J].

Jiang, YY ;

Sehitoglu, H .

WEAR, 1999, 224 (01) :38-49

[10]

Johnson K. L., 1987, CONTACT MECH

← 1 2 3 →