考虑时间因素的纤维束模型雪崩失效过程研究

Journal: Engineering and Management Science DOI: 10.32629/ems.v8i6.20567

乔争气

喀什市住房和城乡建设局

Abstract

纤维束模型是研究纤维材料力学特性的一种有效方法，然而很少有人研究纤维束模型雪崩失效能量释放过程。首先回顾了纤维束模型的主要特征，推导了弹性能和总损伤能的数学方程。提出了表征雪崩失效过程能量释放快慢的速率公式，而后结合均匀分布、幂次分布与韦布尔分布，论证了弹性能导数峰值与能量释放速率存在的强关联性。结果表明：提出的雪崩释放速率公式能够表征雪崩灾变过程的时间尺度，雪崩释放速率与弹性能导数峰值和加载速率呈现正相关性，有一定的应用价值。

Keywords

纤维束模型；雪崩；阈值分布；雪崩失效

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References

[1] Midgley E, Pierce F T. The Weakest Link Theorems on Strength of Long and of Composite Specimens[J]. Journal of the Textile Institute, 1926, 17(2): T355- T368..
[2] Raischel F, Kun F, Herrmann H J. Fiber bundle models for composite materials[C]//Conference on Damage in Composite Materials. 2006.
[3] Pradhan S, Kjellstadli J T, Hansen A. Variation of elastic energy shows reliable signal of upcoming catastrophic failure[J]. Frontiers in Physics, 2019, 7: 106.

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