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Mesh based construction of flat-top partition of unity functions

机译:基于网格的单位功能平顶分区构造

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摘要

A novel idea to construct flat-top partition of unity functions in a closed form on a general (structured or unstructured) finite element mesh is presented. An efficient and practical construction method of a flat-top partition of unity function is important in the generalized finite element method (GFEM). Details on how to construct flat-top partition of unity functions on a provided mesh are given. The generalized finite element approximation with the use of the new flat-top partition of unity function is presented with various numerical examples that demonstrate the effectiveness of proposed flat-top partition of unity functions.
机译:提出了在通用(结构化或非结构化)有限元网格上以闭合形式构造单位函数的平顶分区的新颖思想。统一函数的平顶分区的一种高效实用的构造方法在广义有限元方法(GFEM)中很重要。给出了有关如何在提供的网格上构造单位函数的平顶分区的详细信息。通过使用各种数值示例,介绍了使用新的单位函数平顶分区的广义有限元逼近,这些数值示例证明了拟议的单位函数平顶分区的有效性。

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