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Spherical finite element analysis

机译:球面有限元分析

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Finite element analysis techniques are applied to the sphere. The sphere is subdivided into non-rectangular linear hexahedra except at the polar axis, where they are wedges. An automatic mesh generation computer program, based on the work of Sepulveda (1984), is used to assign node and element numbers. Equation numbers are assigned to minimize the bandwidth of the "stiffness matrix". To avoid computation artifacts, it is important to subdivide the sphere into elements whose sides are approximately equal. Two examples are presented, (a) the ideal magnet, and (b) a three-layered conducting sphere. To demonstrate the versatility of the method described in the paper, a low-resistivity region was introduced in the three-layered conducting sphere to show how the equipotential and current flow lines are affected.
机译:有限元分析技术应用于球体。球体细分为非矩形线性六面体,但在极轴处为楔形。基于Sepulveda(1984)的工作的自动网格生成计算机程序用于分配节点和单元编号。分配方程式编号以最小化“刚度矩阵”的带宽。为了避免计算失真,将球体细分为边约相等的元素非常重要。给出两个例子,(a)理想磁体,(b)一个三层导电球。为了证明本文所述方法的多功能性,在三层导电球体中引入了低电阻率区域,以显示等势线和电流线如何受到影响。

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