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A review of fatigue and fracture mechanics with a focus on rubber-based materials

机译:重点研究橡胶基材料的疲劳和断裂力学

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Prediction of how cracks nucleate and develop is a major concern in fracture mechanics. The purpose of this study is to provide an overview of the state of the art on fracture mechanics with primary focus on different methodologies available for crack initiation and growth prediction in rubber-based materials under the static and fatigue loading conditions. The concept of fracture mechanics applied to rubber-based materials and concern of finite element analysis for J-integral estimation in elastomers are discussed in this paper. The strain energy release rate is commonly used to describe the energy dissipated during fracture per unit of fracture surface area and can be calculated by J-integral method, which represents a path-independent integral around the crack tip. As fatigue crack growth most commonly occurs in structures, the high-cycle fatigue life of components needs to be predicted by using extended finite element, strain energy density, finite fracture mechanics, and other techniques which will be covered in this review paper. In addition, some recent testing and numerical results reported in the literature and their applications will be discussed.
机译:裂缝如何成核和发展的预测是断裂力学中的主要问题。这项研究的目的是提供断裂力学的最新进展,主要侧重于在静态和疲劳载荷条件下可用于橡胶基材料的裂纹萌生和增长预测的不同方法。本文讨论了应用于橡胶基材料的断裂力学概念以及对弹性体中J积分估计的有限元分析的关注。应变能释放率通常用于描述每单位断裂表面积的断裂过程中耗散的能量,并且可以通过J积分法来计算,J积分法表示裂纹尖端周围与路径无关的积分。由于疲劳裂纹最常发生在结构中,因此需要使用扩展的有限元,应变能密度,有限的断裂力学和其他技术来预测组件的高周疲劳寿命,这些将在本文中进行介绍。此外,还将讨论文献中报道的一些最新测试和数值结果及其应用。

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