It is desirable to obtain a fatigue criterion that can be correlated to different rubbers with both mechanical and temperature effects. In this paper, we investigated the possibility to correlate the S-N base function to temperature environments. The published experimental data consisting of temperatures ranging from 23-90 ° C for rubber samples with 50 and 45 Shore hardness were used to validate the existing S-N base function. Concomitantly, a new S-N base function was derived by adding two temperature functions from the test data. In the two criteria, both the thermal expansion and the shear modulus change with temperature were considered. The results have shown that for the 50 Shore hardness rubber, approximately 94% of the points predicted using the existing function and 100% of the points using the new function fell within a scatter band of 1.5. For 45 Shore hardness rubber at 90°C, all predicted points using the existing function fell along the upper limit line of a scatter band of approximately 2.0. On the contrary, all predicted points at 90 ° C fell within a scatter band of 1.35 using the new function. Therefore, this potential novel approach could be used in both the design stages of antivibration rubber components.

中文翻译：

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具有温度影响的橡胶减振设计的疲劳预测准则

期望获得可以与具有机械和温度效应的不同橡胶相关联的疲劳标准。在本文中，我们研究了将 SN 基函数与温度环境相关联的可能性。已发表的实验数据包括温度范围为 23-90°C、肖氏硬度为 50 和 45 的橡胶样品，用于验证现有的 SN 基函数。同时，通过添加测试数据中的两个温度函数，导出了新的 SN 基函数。在这两个标准中，都考虑了热膨胀和剪切模量随温度的变化。结果表明，对于 50 肖氏硬度的橡胶，使用现有函数预测的点大约 94% 以及使用新函数预测的点 100% 落在 1.5 的散点带内。对于 90°C 下的 45 肖氏硬度橡胶，使用现有函数的所有预测点都落在大约 2.0 的散点带的上限线上。相反，使用新函数，90°C 时的所有预测点都落在 1.35 的散点带内。因此，这种潜在的新颖方法可以用于减振橡胶部件的两个设计阶段。