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Semi-permeable crack analysis in magnetoelectroelastic solids

机译:磁电弹性固体中的半渗透裂纹分析

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This paper discusses various electromagnetic boundary conditions on the crack-faces in two-dimensional magnetoelectroelastic materials. For this purpose, a meshless method based on the local PetrovGalerkin approach is developed to solve the initial-boundary value problems of two-dimensional cracked magnetoelectroelastic solids with nonlinear electrical and magnetic boundary conditions on the crack-faces. A Heaviside step function as the test function is applied in the weak form to derive local integral equations. Nodal points are spread on the analyzed domain and each node is surrounded by a small circle for simplicity. The spatial variations of the displacements, electric and magnetic potentials are approximated by the moving least-squares (MLS) scheme. After performing the spatial integrations, one obtains a system of ordinary differential equations for certain nodal unknowns. That system is solved numerically by the Houbolt finite-difference scheme as a time-stepping method. An iterative solution algorithm is developed to consider nonlinear electromagnetic crack-face boundary conditions.
机译:本文讨论了二维磁电弹性材料在裂纹面上的各种电磁边界条件。为此目的,开发了一种基于局部PetrovGalerkin方法的无网格方法来解决二维裂纹磁电弹性固体在裂纹面上具有非线性电和磁边界条件的初始边界值问题。将Heaviside阶跃函数作为测试函数以弱形式应用,以导出局部积分方程。节点分散在被分析的域上,为简单起见,每个节点都被一个小圆圈包围。位移,电势和磁势的空间变化通过移动最小二乘(MLS)方案进行估算。在进行空间积分之后,对于某些节点未知数,可以获得一个常微分方程组。该系统通过Houbolt有限差分方案作为时间步长方法进行数值求解。提出了一种考虑非线性电磁裂纹面边界条件的迭代求解算法。

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