Numerical Simulation for the Mesoscale Deformation of Disordered Reinforced Elastomers

Numerical Simulation for the Mesoscale Deformation of Disordered Reinforced Elastomers
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无序增强弹性体细观变形的数值模拟

DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
P. Sotta
P. Sotta
中科院分区：
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文献类型：
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作者：
D. Long;P. Sotta

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本文用耗散分子动力学方法研究了凝胶或填充弹性体等无序弹性体系的动力学行为。我们表明，应用宏观变形导致非仿射变形在填料颗粒的规模。这些非仿射变形导致缓慢的中尺度重组，这可以解释在凝胶和橡胶中测量到的长松弛时间，甚至在远高于玻璃化转变温度的温度下也是如此。
We study here the dynamical behavior of disordered elastic systems such as gels or filled elastomers, by dissipative molecular dynamics. We show that applied macroscopic deformations result in non-affine deformations at the scale of the filler particles. These non-affine deformations lead to slow meso-scale reorganizations, which could explain the long relaxation times measured in gels, and also in rubbers even at temperatures much above the glass transition temperature.