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Circular loadings on the surface of an anisotropic and magnetoelectroelastic half-space

机译:各向异性和磁电弹性半空间表面上的圆形载荷

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In this paper, we derive the analytical solutions for two types of surface loadings over an anisotropic magnetoelectroelastic half-space: a uniform and an indentation-type load. Our solutions in terms of the simple line integral over [0,π] contain various decoupled materials and materials with high symmetry as special cases. Furthermore, the surface results of the solutions of the half-space are also provided. It is shown that on the surface: (1) for the uniform loading, the integrands for the extended displacements are continuous whilst those for the extended stresses have two weak singularities of order 1/r ~(1/2) along the integral interval [0,π], which are integrable in the sense of Cauchy principal value and (2) for the indentation-type loading, the order of the singularity in the extended stress is exactly Cauchy type of 1/r, which can also be integrated via the Cauchy principal value. For a general anisotropic magnetoelectroelastic half-space, numerical examples in the vertical plane are presented for a uniform horizontal/vertical load and a vertical indentation-type load. The physical quantities presented are the magnitude of the elastic displacement vector, the electric and magnetic potentials, the hydrostatic and effective stresses, and the magnitudes of the electric and magnetic field vectors. These numerical results not only show some distinguished features associated with the loadings, but also can serve as benchmarks for future numerical endeavors in this field.
机译:在本文中,我们导出了各向异性磁电弹性半空间上两种表面载荷的解析解:均匀载荷和压痕载荷。关于[0,π]上的简单线积分,我们的解决方案包含各种解耦的材料和特殊情况下具有高对称性的材料。此外,还提供了半空间解的表面结果。结果表明,在表面上:(1)对于均匀载荷,扩展位移的积分是连续的,而应力扩展的积分沿着积分间隔具有两个弱奇异性,即1 / r〜(1/2)。 0,π],它们在柯西主值的意义上是可积分的,而对于压痕型载荷而言是(2),在扩展应力中奇异性的阶数恰好是柯西类型的1 / r,也可以通过柯西本金。对于一般的各向异性磁电弹性半空间,在垂直平面上给出了数值示例,用于均匀的水平/垂直载荷和垂直压痕型载荷。所显示的物理量是弹性位移矢量的大小,电势和磁势,流体静压力和有效应力以及电场和磁场矢量的大小。这些数值结果不仅显示了与载荷有关的一些显着特征,而且可以作为该领域未来数值研究的基准。

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