Response of Carbon Black Filled Butyl Rubber to Cyclic Loading
Response of Carbon Black Filled Butyl Rubber to Cyclic Loading
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炭黑填充丁基橡胶对循环加载的响应
DOI：
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发表时间：
1981
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通讯作者：
L. J. Zapas
中科院分区：
文献类型：
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作者：
G. McKenna;L. J. Zapas
研究了炭黑填充丁基橡胶在循环载荷（蠕变）和循环变形（应力松弛）过程中的应力软化行为。单步和多步应力松弛和蠕变实验进行了正弦加载历史的蠕变实验。根据BKZ本构方程对实验数据进行了分析。对于遵循BKZ理论预测行为的材料，单步应力松弛响应是循环变形历史中应力的下限，单步蠕变响应是循环加载历史中获得的变形的上限。在我们的实验中，我们观察到，对于填充丁基橡胶，对循环变形和循环载荷历史的响应在这些界限之外。循环加载过程中的软化比循环变形过程中的软化更为明显。我们还发现，橡胶是刚性蠕变比预测从BKZ理论（从…
Abstract The stress softening behavior of a carbon black filled butyl rubber in cyclic loading (creep) and cyclic deformation (stress relaxation) histories was investigated. Single step and multiple step stress relaxation and creep experiments were conducted as were creep experiments with sinusoidal loading histories. The data were analyzed in view of the BKZ constitutive equation. For materials which follow the behavior predicted by the BKZ theory, the single step stress relaxation response is a lower bound for the stress in cyclic deformation histories, and the single step creep response is an upper bound for the deformations obtained in cyclic loading histories. In our experiments we observed that for filled butyl rubber, the responses to cyclic deformation and cyclic loading histories were outside these bounds. The softening was much more emphatic in cyclic loading histories than in cyclic deformation histories. We also found that the rubber is stiffer in creep than predicted from the BKZ theory (from...