Critical plane concept and energy approach in multiaxial fatigue
Critical plane concept and energy approach in multiaxial fatigue
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DOI：
10.3139/120.100660
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发表时间：
2005-05
影响因子：
2.5
通讯作者：
T. Palin-Luc;F. Morel
中科院分区：
文献类型：
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作者：
T. Palin-Luc;F. Morel
摘要 本文旨在对几种基于能量的临界面高周疲劳准则提出新的解释。更准确地说，几个基于能量的全球标准的含义是通过计算临界平面上的法向功和剪切功来详细说明的。这项研究仅限于等幅和同步载荷（比例或非比例）下的多轴疲劳，有或没有平均载荷。在对一些使用临界面概念或全局方法的基于能量的准则进行简短回顾后，总结了基于能量的临界面准则在文献中越来越多地发展的原因。结果表明，临界平面能量参数与全局能量参数之间存在直接联系。对著名的芬德利等人的批判性审查。提出了实验，并用 Papadopoulos 开发的两个细观标准和 Banvillet 等人的基于全局能量的标准说明了先前的链接。这促使我们提出从细观尺度到宏观尺度的疲劳裂纹萌生的解释，无论是用应力和应变量还是用应变能参数。
Abstract This paper aims to propose a new interpretation of several energy-based critical plane high cycle fatigue criteria. More exactly, the meaning of several global energy-based criteria is detailed from the calculation of normal and shear work on a critical plane. This study is limited to multiaxial fatigue under constant amplitude and synchronous loadings (proportional or non-proportional), with or without mean load. After a short review of some energy-based criteria using the critical plane concept or a global approach, the reasons why energy-based critical plane criteria are more and more developed in literature are summarized. It is shown that a direct link exists between critical plane energy parameters and global ones. A critical examination of the famous Findley et al. experiments is proposed and the previous link is illustrated with two mesoscopic criteria developed by Papadopoulos and the global energy-based criterion of Banvillet et al. This leads us to propose an interpretation of fatigue crack initiation from the mesoscopic scale up to the macroscopic scale either with stress and strain quantities or with strain energy parameters.