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首页> 外文期刊>Zeitschrift fur Angewandte Mathematik und Mechanik >Strain induced transient effects of filler reinforced elastomers with respect to the Payne-Effect: experiments and constitutive modelling
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Strain induced transient effects of filler reinforced elastomers with respect to the Payne-Effect: experiments and constitutive modelling

机译：填料增强弹性体相对于佩恩效应的应变诱导瞬态效应：实验和本构模型

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摘要

Filler-reinforced rubber shows many interesting nonlinear effects under cyclic deformations. As a result of the dynamic loading, a change in the materials’ microstructure and hence in the dynamic behaviour of the elastomer is observed. In this context, the frequency-, amplitude-, temperature-, and the preload-dependence are well-known effects. Additionally, pronounced thermomechanical couplings are observed, e.g., heat build-up phenomena. Mechanical coupling effects can be demonstrated by studying the transient dynamic behaviour of the Payne-effect (amplitude dependence). Using the technique of dynamical mechanical analysis (DMA) the mentioned effects can be investigated in a very comfortable way. To study the process dependence of the dynamic modulus, bimodal DMA tests and transient multistep tests have been carried out. The non-trivial postprocessing of the bimodal measurements is shortly explained in the paper. The approach of finite nonlinear viscoelasticity with additional internal variables provides an excellent basis for constitutive material modelling. The thermodynamical consistency of the developed constitutive model is demonstrated. This offers the possibility to represent thermomechanical coupling effects like the dissipative heat build-up. A series of numerical results of FEM simulations under more complicated transient loading histories, computed with the developed and implemented material model, are presented.
机译：填料增强的橡胶在循环变形下表现出许多有趣的非线性效应。动态载荷的结果是，材料的微观结构发生了变化，从而观察到了弹性体的动态行为。在这种情况下，频率，幅度，温度和预载依赖性是众所周知的效果。另外，观察到明显的热机械耦合，例如，热量累积现象。机械耦合效应可以通过研究Payne效应的瞬态动态行为（幅度相关性）来证明。使用动态力学分析（DMA）技术，可以非常舒适的方式研究上述影响。为了研究动态模量的过程依赖性，已经进行了双峰DMA测试和瞬态多步测试。本文简短地解释了双峰测量的非平凡后处理。带有附加内部变量的有限非线性粘弹性方法为本构材料建模提供了极好的基础。证明了所开发的本构模型的热力学一致性。这提供了表示热机械耦合效应（如耗散热量积累）的可能性。给出了在更复杂的瞬态载荷历史下的有限元模拟的一系列数值结果，并使用已开发和实施的材料模型进行了计算。

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