Residual stresses generated by repeated local heating events - Modelling of possible mechanisms for crack initiation
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- 作者：Johan Ahlströ ; m johan.ahlstrom@chalmers.se" class="auth_mail" title="E-mail the corresponding author
- 关键词：Finite element model ; Squat ; stud ; RCF crack cluster ; Thermal damage ; Phase transformation ; Residual stress
- 刊名：Wear
- 出版年：2016
- 出版时间：15 November 2016
- 年：2016
- 卷：366-367
- 期：Complete
- 页码：180-187
- 全文大小：1708 K
文摘
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Model developed to examine strength and stress after repeated local friction heating.
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The model captures carefully dilatation effects on subsequent martensite tempering.
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Different thermal sequences are examined to demonstrate the model´s capability.
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Hypotheses of thermally induced crack formation in wheels and rails examined.
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Computed strength and stress fields possible effect on crack formation discussed.