Fatigue limit predictions at stress concentrations using FEA and microstructural fracture mechanics

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• 作者：V. Chaves ; ^{chavesrv@us.es} ; C. Madrigal ; A. Navarro
• 关键词：Fatigue limit ; Notch ; Fracture mechanics ; FEA ; Stress gradient
• 刊名：Theoretical and Applied Fracture Mechanics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：87
• 期：Complete
• 页码：11-20
• 全文大小：699 K
• 卷排序：87

文摘

A simplification of the NR model is proposed for notch fatigue limits. It does not require any knowledge about mechanics of dislocations. The input is the linear elastic stress gradient ahead of the notch, through FEA. Good results were obtained for circular holes and V-notches in Mode I loading. The simplification can be applied to any notch geometry.