Coupled cohesive zone models for mixed-mode fracture: A comparative study
Coupled cohesive zone models for mixed-mode fracture: A comparative study
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DOI：
10.1016/j.engfracmech.2015.09.029
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发表时间：
2015-11-01
影响因子：
5.4
通讯作者：
Zavarise, G.
中科院分区：
文献类型：
--
作者：
Dimitri, R.;Trullo, M.;Zavarise, G.
本文对一些已发表的指数型和双线性混合模内聚带模型的一致性进行了检验。研究了耦合对牵引-分离行为和能量耗散的影响，并对分离和破坏区域脱粘功的路径依赖性进行了分析和数值计算。除了van den Bosch等人（2006）的模型外，所有选定的模型都存在一些不一致之处，然而，该模型目前并未在热力学框架内制定，而是以一种特殊的方式进行了假设。因此，我们在损伤力学中提出了一个热力学一致的模型重新表述，该模型在加载，卸载，脱粘和接触方面保持整体。(C) 2015 Elsevier Ltd.版权所有。
This paper checks the consistency of some published exponential and bilinear mixed-mode cohesive zone models. The effect of coupling on traction-separation behavior and energy dissipation is investigated and the path-dependence of the debonding work of separation and failure domain is evaluated analytically and numerically. All selected models present several inconsistencies, except for the one by van den Bosch et al. (2006), which is, however, not currently formulated within a thermodynamical framework but postulated in an ad-hoc manner. We thus propose a thermodynamically consistent reformulation of this model within damage mechanics, which holds monolithically for loading, unloading, decohesion and contact. (C) 2015 Elsevier Ltd. All rights reserved.