Field statistical and finite element analysis of rail squats

被引：11
|
作者：
Farjoo, Mohammadali [1 ]
Daniel, William [1 ]
Bellette, Paul [1 ]
Meehan, Paul A. [1 ]
机构：
[1] Univ Queensland, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia
来源：
ENGINEERING FRACTURE MECHANICS | 2013年 / 109卷
关键词：
Squat; Statistics; Crack propagation; Stress intensity factor; Elastic foundation effects; Water entrapment; Mixed model; ROLLING-CONTACT FATIGUE; CRACK-GROWTH; PREDICTION; INITIATION; LIFE; RCF;
D O I：
10.1016/j.engfracmech.2013.05.004
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In this paper, squats on 262 km of Australian railway track have been statistically investigated. Data from more than 4900 squat occurrences has been collected. At each point, rail type, rail, sleeper type, the curve radius and rail direction are recorded as fixed parameters. A linear mixed model has been used to statistically identify the parameters and parameter combinations that are more likely to lead to the occurrence of squats and results are compared with those from a 3D finite element model. Results show that squats are more likely to occur in sharper radius curves due to higher lateral traction and at locations with a softer foundation due to the elastic foundation effect. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：117 / 129
页数：13
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