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Experimental investigation of the stress-stretch behavior of EPDM rubber with loading rate effects

机译:三元乙丙橡胶的应力拉伸行为及加载速率效应的实验研究

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The tensile stress-stretch behavior of an ethylene-propylene-diene terpolymer (EPDM) was experimentally investigated, both in a quasi-static stretching rate range (<0.4/s) with a conventional material test machine and in a dynamic stretching rate range (2800/s-3200/s) with a split Hopkinson tension bar (SHTB) technique. Experimental data were then analyzed using the Ogden and Roxburgh's idealized Mullins effect modeling theory. Results show that the stress-stretch behavior is significantly dependent on stretching rate and the Mullins effect exists under dynamic loading. Furthermore, stretching rate only affects the material properties. The degree of damage in a stretched specimen is a function of only the maximum stretch ratio the specimen experienced. (C) 2003 Elsevier Ltd. All rights reserved. [References: 32]
机译:实验研究了乙烯-丙烯-二烯三元共聚物(EPDM)的拉伸应力-拉伸行为,在常规材料试验机的准静态拉伸速率范围(<0.4 / s)和动态拉伸速率范围( 2800 / s-3200 / s),采用霍普金森张力杆(SHTB)分离技术。然后使用Ogden和Roxburgh的理想化Mullins效应建模理论分析实验数据。结果表明,应力-拉伸行为很大程度上取决于拉伸速率,并且在动态载荷下存在Mullins效应。此外,拉伸速率仅影响材料性能。拉伸样品的损坏程度仅是样品所经历的最大拉伸比的函数。 (C)2003 Elsevier Ltd.保留所有权利。 [参考:32]

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