Basic solution to four three-dimensional rectangular limited-permeable cracks in transversely isotropic magneto-electro-elastic material

Basic solution to four three-dimensional rectangular limited-permeable cracks in transversely isotropic magneto-electro-elastic material
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横观各向同性磁电弹性材料中四维矩形有限渗透裂纹的基本解

DOI:
10.1016/j.amc.2013.09.032
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发表时间:
2013-12
影响因子:
4
通讯作者:
Zhou, Zhen-Gong
Zhou, Zhen-Gong
中科院分区:
数学2区
文献类型:
--
作者:
Liu, Hai-Tao;Wu, Wen-Juan;Zhou, Zhen-Gong

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在有限导磁边界条件下,利用广义Almansi定理和施密特方法,给出了磁电弹性材料中四个三维矩形裂纹的解。通过傅里叶变换,将问题转化为三对对偶积分方程,其中未知变量为裂纹面上的位移跃变。在求解对偶积分方程时,裂纹面上的位移跳跃直接展开为一系列雅可比多项式。最后,给出了裂纹内部空气的介电常数、磁导率、矩形裂纹的几何形状以及四个矩形裂纹之间的距离对电磁弹性材料中应力强度因子、电位移强度因子和磁通强度因子的影响,并讨论了电磁弹性耦合效应。
The solution to four three-dimensional rectangular cracks in magneto-electro-elastic material is proposed by using the generalized Almansi’s theorem and the Schmidt method under limited-permeable boundary conditions. The problem is formulated through Fourier transform as three pairs of dual integral equations, in which the unknown variables are the displacement jumps across the crack surfaces. For solving the dual integral equations, the displacement jumps across the crack surfaces are directly expanded as a series of Jacobi polynomials. Finally, the effects of the electric permittivity, the magnetic permeability of the air inside the crack, the geometric shape of the rectangular crack and the distance among four rectangular cracks on the stress intensity factors, the electric displacement intensity factors and the magnetic flux intensity factors in magneto-electro-elastic material are presented and the magneto-electro-elastic coupling effects are also discussed.
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发表时间: 2009-09
影响因子: 3.6
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