A thermo-viscoelastic model for elastomeric behaviour and its numerical application

A thermo-viscoelastic model for elastomeric behaviour and its numerical application
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弹性体行为的热粘弹性模型及其数值应用

DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
M. Jaeger
M. Jaeger
中科院分区：
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文献类型：
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作者：
A. Boukamel;S. Méo;O. Débordes;M. Jaeger

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本文提出了一种粘弹性弹性体在大应变下的热机械行为模型。 提出了一个配方与推广到大应变的坡印廷-汤姆森流变模型。然后，考虑到力学平衡的不可压缩性约束的有限元制剂暴露。在热力耦合方面，提出了一种时间离散化算法，该算法具有两个时间尺度，分别对应于力学行为和热行为。最后，以双剪试验为例进行了数值模拟，分析了参数的影响，并将数值模拟结果与试验结果进行了比较。
Summary This paper presents a model of thermo-mechanical behaviour of viscoelastic elastomers under large strain. A formulation is proposed with a generalisation to large strain of the Poynting–Thomson rheological model. A finite element formulation is then exposed taking the incompressibility constraint for mechanical equilibrium into account. On the thermomechanical coupling aspect, an algorithm of time discretisation is proposed with two time scales corresponding respectively to mechanical and thermal behaviours. Finally, an application for the simulation of a double-shearing test is presented with an analysis of parameters' influence and a comparison between numerical and experimental results.