This work analyses the impact of the sample geometry on the stress or strain concentration and the occurrence of big agglomerates in the investigated test volume. Although the three investigated dumbbell test specimens were loaded at the same stress level, there were significant differences in measured lifetime. These differences in the lifetime are due to the occurrence of the large agglomerates in the tested volume. The probability of occurrence of large agglomerates increases with increase in the investigated volume. In the lifetime prediction by Monte Carlo method, this effect is realized by changing the quantity of the distributed agglomerates in the mesh of the simulated model. The prediction of the different sample geometries shows a very good agreement with the measurement points. The numerical simulations illustrate the stress increase for the three used lifetime test samples.

中文翻译：

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炭黑团聚体发生概率对填充弹性体测量和预测耐久性的影响

这项工作分析了样品几何形状对应力或应变集中的影响以及所研究的测试体积中大团块的出现。尽管三个研究的哑铃测试样本在相同的应力水平下加载，但测量的寿命存在显着差异。寿命的这些差异是由于在测试体积中出现了大的团块。大团块出现的概率随着调查体积的增加而增加。在蒙特卡罗方法的寿命预测中，这种效果是通过改变模拟模型网格中分布的团聚体的数量来实现的。不同样品几何形状的预测与测量点非常吻合。