An isogeometric-symplectic coupling approach for fracture analysis of magnetoelectroelastic bimaterials with crack terminating at the interface

An isogeometric-symplectic coupling approach for fracture analysis of magnetoelectroelastic bimaterials with crack terminating at the interface
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裂纹终止于界面的磁电弹性双材料断裂分析的等几何-辛耦合方法

DOI:
10.1016/j.engfracmech.2019.106510
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发表时间:
2019-07
影响因子:
5.4
通讯作者:
Xinsheng Xu
Xinsheng Xu
中科院分区:
工程技术2区
文献类型:
--
作者:
Zhenhuan Zhou;Xiong Yu;Zhenting Yang;Wang Xu;C.W. Lim;Xinsheng Xu

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提出了一种新的和新颖的方法,利用等几何分析(伊加)和辛方法的优点,用于磁电弹性双材料的III型断裂分析的裂纹终止于界面。在这种新的方法中,伊加被用于离散的整体物理域和解析辛本征函数应用在裂纹尖端附近的奇异场。导出了奇异物理场变量的新的显式表达式,引入并确定了新的强度系数。这种创新的耦合等几何辛方法的物理后果和工程断裂的影响充分描述在几个实际的,数值例子。
A new and novel approach that capitalizes the advantages of isogeometric analysis (IGA) and symplectic method is proposed for the mode III fracture analysis of magnetoelectroelastic bimaterials with crack terminating at the interface. In this new approach, IGA is adopted for discretizing the overall physical domain and the analytical symplectic eigenfunctions are applied in the singular field near the crack tip. New explicit expressions for singular physical field variables are derived and new intensity coefficients are introduced and determined. The physical consequences and engineering fracture implications of this innovative coupled isogeometric-symplectic approach are fully described in a few practical, numerical examples.
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