A generalized network decomposition model for the quasi-static inelastic behavior of filled elastomers
A generalized network decomposition model for the quasi-static inelastic behavior of filled elastomers
复制标题
DOI：
10.1016/j.ijplas.2013.12.004
复制
发表时间：
2014-12-01
影响因子：
9.8
通讯作者：
Itskov, Mikhail
中科院分区：
文献类型：
--
作者：
Dargazany, Roozbeh;Vu Ngoc Khiem;Itskov, Mikhail
即使在简单的准静态加载下，填充弹性体也表现出明显的非弹性现象，如Mullins效应、变形诱导的各向异性、永久变形、滞后和应变诱导结晶。到目前为止，这些现象还没有用单一的本构模型来描述。在本文中，我们提出了一个广义细观力学框架，该框架在一个单一的本构方程中捕捉到了上述所有的影响。它的基础是将橡胶基质分解成五个平行的网络，这些网络被认为是纯弹性行为、损伤、滞后和因应变诱导结晶而导致的应力硬化的来源。该模型用相对较少的物理可解释材料常数来描述，并预测了填充弹性体的准静态响应，与实验数据吻合较好。(C)2014爱思唯尔有限公司。保留所有权利。
Even in a simple quasi-static loading, filled elastomers demonstrate distinct inelastic phenomena, such as the Mullins effect, deformation induced anisotropy, permanent set, hysteresis, and strain-induced crystallization. So far, these phenomena have not been described by a single constitutive model. In the present paper we propose a generalized micro-mechanical framework capturing all aforementioned effects within a single constitutive formulation. It is based on the decomposition of the rubber matrix into five parallel networks considered to be the sources of the purely elastic behavior, damage, hysteresis, and stress hardening due to the strain-induced crystallization. The model is described by a relative small number of physically interpretable material constants and predicts the quasi-static response of filled elastomers in good agreement with experimental data. (C) 2014 Elsevier Ltd. All rights reserved.