Continuum damage mechanics for hysteresis and fatigue of quasi-brittle materials and structures
Continuum damage mechanics for hysteresis and fatigue of quasi-brittle materials and structures
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DOI：
10.1002/nag.532
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发表时间：
2007-02-01
影响因子：
4
通讯作者：
Pham, H.
中科院分区：
文献类型：
--
作者：
Desmorat, R.;Ragueneau, F.;Pham, H.
对于表现出滞后的材料，例如准脆性材料，很自然地认为滞后和疲劳彼此相关。在本工作中，从连续损伤力学的观点来看，损伤可以被看作是这两种现象之间的联系。因此，人们试图建立一个统一的迟滞和损伤模型。数值算例验证了所提出的内滑摩擦损伤耦合模型的正确性。一个适当的唯象建模的微缺陷闭合效应导致不对称的拉伸/压缩响应和压缩刚度恢复的问题也得到了解决。考虑循环和疲劳应用，以及随机疲劳和地震响应。版权所有（c）2006约翰威利父子有限公司。
For a material exhibiting hysteresis such as quasi-brittle materials, it is natural to consider that hysteresis and fatigue are related to each other. One shows in the present work that damage, from the continuum damage mechanics point of view, may be seen as the link between both phenomena. One attempts, hence, to set up a unified modelling of hysteresis and damage. Numerical examples are given for concrete and validate the proposed model of internal sliding and friction coupled with damage. The problem of a proper phenomenological modelling of the micro-defects closure effect leading to a dissymmetric tension/ compression response and to stiffness recovery in compression is also addressed. Cyclic and fatigue applications are in mind, and also random fatigue and seismic responses. Copyright (c) 2006 John Wiley & Sons, Ltd.