Applicability of the crack-face electromagnetic boundary conditions for fracture of magnetoelectroelastic materials
Applicability of the crack-face electromagnetic boundary conditions for fracture of magnetoelectroelastic materials
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DOI：
10.1016/j.ijsolstr.2006.04.028
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发表时间：
2007-01
影响因子：
3.6
通讯作者：
Baolin Wang;Y. Mai
中科院分区：
文献类型：
--
作者：
Baolin Wang;Y. Mai
本文讨论了具有压电、压磁和磁电耦合效应的电磁弹性材料裂纹面上的不同电磁边界条件。在这些材料中含有空气（或真空）的有限厚度的缺口也解决了。分别研究了四种理想裂纹面电磁边界条件假设：（a）不导电不透磁裂纹，（B）不导电不透磁裂纹，（c）导电不透磁裂纹和（d）导电不透磁裂纹。得到了切口厚度对切口尖端场强因子和切口内电磁场的影响。并与理想裂纹解进行了比较。讨论了裂纹面电磁边界条件假设的适用性。
This paper discusses the different electromagnetic boundary conditions on the crack-faces in magnetoelectroelastic materials, which possess coupled piezoelectric, piezomagnetic and magnetoelectric effects. A notch of finite thickness in these materials containing air (or vacuum) is also addressed. Four ideal crack-face electromagnetic boundary condition assumptions, that is, (a) electrically and magnetically impermeable crack, (b) electrically impermeable and magnetically permeable crack, (c) electrically permeable and magnetically impermeable crack and (d) electrically and magnetically permeable crack, are investigated separately. The influence of notch thickness on the field intensity factors at notch tips and the electromagnetic field inside the notch are obtained in closed-form. The results are compared with the ideal crack solutions. Applicability of crack-face electromagnetic boundary condition assumptions is discussed.