局部应力增强能诱导断裂过程的稳定性吗?第一部分:表观稳定性
Can Local Stress Enhancement Induce Stability in Fracture Processes? Part I: Apparent Stability
摘要:
通过比较局部和等负荷分担纤维束模型的演化,指出了应力似乎使局部负荷分担模型稳定而等负荷分担模型不稳定的矛盾结果。我们解释这种行为,证明它只是一个明显的稳定性,在本地负载分担模型,这源于由于样本平均的统计效应。即使我们使用纤维束模型来证明表观稳定性,我们认为,这是一个更普遍的特征断裂过程。
英文摘要:
By comparing the evolution of the local and equal load sharing fiber bundle models, we point out the paradoxical result that stresses seem to make the local load sharing model stable when the equal load sharing model is not. We explain this behavior by demonstrating that it is only an apparent stability in the local load sharing model, which originates from a statistical effect due to sample averaging. Even though we use the fiber bundle model to demonstrate the apparent stability, we argue that it is a more general feature of fracture processes.
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