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首页> 外文期刊>Mechanics & Industry >The capability of three seperable finite-strain viscoelastic models to predict response of a filled rubber material
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The capability of three seperable finite-strain viscoelastic models to predict response of a filled rubber material

机译：三种可用有限菌株粘弹性模型的能力预测填充橡胶材料的响应

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Three integral-based finite strain viscoelastic models under the assumption of time-strain separability have been investigated within this work. To this end, experimental investigation has been conducted on a carbon black filled rubber, a mixture of natural rubber and bromobutyl. The monotonic tests were performed to capture the long-term response of the material. Relaxation tests were intented to identify the time-dependent material properties, and completed with a dynamic mechanical analysis. Models under consideration are Christensen, Fosdick and Yu and Simo model implemented in the finite element solver Abaqus. Under the assumption of an homegeneous incompressible material with a Mooney-Rivlin elastic potential, the response of the three models is compared for uniaxial tension and simple shear motions in time and frequency domains with respect to strain-rate, frequency and static predeformation dependencies. The equilibrium and non-equilibrium stress is predicted in a limited range mainly related to the choice and identification of the hyperelastic model. For stress relaxation, the long-term response is asymptotically reached with good accuracy, while the hysteritic response is mainly overestimated for Christensen model, and better approximated for both Fosdick and Yu and Simo models. In the frequency domain, Fosdick and Yu model shows no dependence on the predeformation. Christensen model is likely adapted to unfilled rubbers, and is unable to predict the softening effect due to the static predeformation effect. Simo model shows better prediction capabilities with a minimal set of material parameters.
机译：在这项工作中，已经研究了三种基于一体的有限菌株粘弹性模型，在这项工作中已经研究过存在时间应变可分离性。为此，已经在炭黑填充橡胶，天然橡胶和溴丁基的混合物上进行了实验研究。进行单调试验以捕获材料的长期响应。令人挑剔的测试被旨在识别时间依赖性材料特性，并通过动态的机械分析完成。正在考虑的模型是基督徒，FOSDICK和YU和SIMO模型在有限元求解器ABAQUS中实施。在具有Mooney-RIVLIN弹性电位的局部不可压缩材料的假设下，比较了三种模型的响应，以与应变速率，频率和静态预测依赖性的时间和频域中的单轴张力和简单的剪切运动进行比较。在有限范围内预测平衡和非平衡应力主要与高速模型的选择和识别有关。对于应力松弛，长期响应具有良好的准确性渐近逐渐达到，而偿液响应主要被归因于克里斯滕森模型，并且近似为Fosdick和Yu和Simo模型。在频域中，FOSDICK和YU模型显示没有对预磁的依赖性。 Christensen模型可能适用于未填充的橡胶，并且无法预测由于静态预测效果导致的软化效果。 SIMO模型显示更好的预测功能，具有最小的材料参数。

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