文章基本信息

标题：Development of a Fatigue Model for Low Alloy Steels Using a Cycle-Dependent Cohesive Zone Law:
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作者：Kyungmok Kim ; Jaewook Lee ; Joo-Ho Choi 等
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2014
卷号：6
页码：1-8
DOI：10.1155/2014/124037
语种：English
出版社：Sage Publications Ltd.
摘要：A fatigue model for SAE 4130 steels is developed using a cycle-dependent cohesive zone law. Reduction of fracture energy and degradation of stiffness are considered to describe failure resistance after certain number of cycles. The reduction rate of fracture energy is determined with experimental stress (S)- number of cycles to failure (N) scatter found in the literature. Three-dimensional finite element models containing a cohesive zone are generated with commercial software (ABAQUS). Calculated fatigue lives at different stress ratios are in good agreement with experimental ones. In addition, fatigue behavior of hardened SAE 4130 steels is predicted with that of normalized material.