Mechanical tests and simulation on load sharing in alumina fiber bundles
Mechanical tests and simulation on load sharing in alumina fiber bundles
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DOI：
10.1016/j.ceramint.2015.07.105
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发表时间：
2015-12-01
影响因子：
5.2
通讯作者：
Janssen, R.
中科院分区：
文献类型：
--
作者：
Neckel, L.;Pereira da Silva, J. G.;Janssen, R.
陶瓷纤维束的力学行为在受到拉伸时表现出典型的断裂过程，称为雪崩破坏。该过程与一旦某些元件开始失效时光纤束之间的负载分担有关。力学测试进行了捆绑和威布尔统计被用来解释的结果的最大应力支持的束之前的雪崩故障。一个计算模拟最初适应引入负载共享模型。模拟结果与实验结果进行了比较。最后，新提出的负载模型被认为是一个更好的方法来理解破裂雪崩效应。(C)2015 Elsevier Ltd和Techna Group S.r.l. All rights reserved.
The mechanical behavior of bundles of ceramic fibers exhibits a characteristic rupture process when subjected to tensile known as avalanche failure. This process is related to the load sharing among fiber bundles once some of the elements begin to fail. Mechanical tests were performed with bundles and Weibull statistics was used to interpret the results of the maximum stress supported by the bundles before the avalanche failure. A computational simulation was originally adapted introducing load sharing models. The simulations were compared with experimental results. Finally, the newly proposed load model was considered to be a better approach for the understanding of the rupture avalanche effect. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.