Interface debonding models: a viscous regularization with a limited rate dependency
Interface debonding models: a viscous regularization with a limited rate dependency
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DOI：
10.1016/s0020-7683(00)00053-6
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发表时间：
2001-05-01
影响因子：
3.6
通讯作者：
Monerie, Y
中科院分区：
文献类型：
--
作者：
Chaboche, JL;Feyel, F;Monerie, Y
在过去的 10 年里，界面模型已经开发出来，用于模拟各种规模的复合材料脱粘效应，例如基体和纤维之间的脱粘以及层压板中的分层，在有或没有速率依赖性的情况下制定。我们给出了几个例子，说明在与速率无关的模型（如 Tvergaard）中，根据几何形状、界面行为和有限元离散化，如何突然发生“解跳跃”。这种不稳定性对于常用的粘性模型来说消失了，但结果是偏离实验趋势的高速率依赖性。这里提出了一种新的粘性正则化，它适用于Tvergaard脱粘模型或修改模型，并且具有有限的速率依赖性。给出了一些简单的例子，包括双悬臂梁的分层，以展示所提出的技术的能力。 (C) 2001 Elsevier Science Ltd. 保留所有权利。
Interface models have been developed over the past 10 years for simulating various scales of composite debonding effects, such as decohesion between matrix and fibers and delamination in laminates, formulated with and without rate dependencies.We give several examples of how sudden "solution jumps" can occur in rate-independent models like the Tvergaard depending on the geometry, interface behavior, and finite element discretization. This kind of instability disappears for the often-used viscous models, but the result is a high rate dependency that deviate from experimental trends.A new kind of viscous regularization is proposed here, which applies to the Tvergaard debonding model or modified ones, and has a limited rate dependency. A few simple examples are given, including the delamination of a double cantilever beam, to show the capabilities of the technique proposed. (C) 2001 Elsevier Science Ltd. All rights reserved.