Double crack growth analysis in the presence of a bi-material interface using XFEM and FEM modelling
Double crack growth analysis in the presence of a bi-material interface using XFEM and FEM modelling
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DOI：
10.1016/j.engfracmech.2014.07.016
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发表时间：
2014-12
影响因子：
5.4
通讯作者：
K. Nasri;M. Abbadi;M. Zenasni;M. Ghammouri;Z. Azari
中科院分区：
文献类型：
--
作者：
K. Nasri;M. Abbadi;M. Zenasni;M. Ghammouri;Z. Azari
用标准和扩展有限元方法分析了两个裂纹之间的相互作用效应，并阐明了控制这些裂纹在单一材料中的扩展和路径的参数。然后将同样的研究推广到镀锌/TRIP钢800双材料。然后将所得结果与衬底较软的双材料进行比较，以检查衬底刚性对裂纹行为的影响。发现裂纹长度和两条裂纹之间的距离对裂纹路径发散有很大影响。此外，研究还发现，衬底越硬，裂纹之间的偏离越大。
Standard and extended finite element methods are used to analyse the interaction effect between two cracks and elucidate the parameters that govern the growth and the path of these cracks in a mono-material. The same investigation is then generalised to a galvanised zinc/Trip steel 800 bi-material. The obtained results are afterwards compared to a bi-material with a softer substrate to check the effect of the substrate rigidity on the crack behaviour. The crack length and the distance between the two cracks are found to have a substantial influence on the crack path divergence. In addition, it is found that the more the substrate is stiff the more the cracks move away from each other.