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dbr:Singular_boundary_method
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奇异边界法 Singular boundary method
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In numerical analysis, the singular boundary method (SBM) belongs to a family of meshless boundary collocation techniques which include the method of fundamental solutions (MFS), boundary knot method (BKM), regularized meshless method (RMM), boundary particle method (BPM), modified MFS, and so on. This family of strong-form collocation methods is designed to avoid singular numerical integration and mesh generation in the traditional boundary element method (BEM) in the numerical solution of boundary value problems with boundary nodes, in which a fundamental solution of the governing equation is explicitly known. 奇异边界法（Singular boundary method）是一种与边界元法相对应的边界型数值计算方法，同基本解法、边界节点法、去奇异无网格法、边界粒子法和改进的基本解法等同属于边界型无网格数值离散方法。该类方法的共同特点是通过节点信息建立插值基函数，不需要对区域或者其边界作网格划分，克服了传统基于网格的方法（如有、有限差分法和）对网格的依赖性，特别适合于求解大变形问题、移动边界问题、反问题、薄体结构问题、和复杂-高维几何区域等问题。
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In numerical analysis, the singular boundary method (SBM) belongs to a family of meshless boundary collocation techniques which include the method of fundamental solutions (MFS), boundary knot method (BKM), regularized meshless method (RMM), boundary particle method (BPM), modified MFS, and so on. This family of strong-form collocation methods is designed to avoid singular numerical integration and mesh generation in the traditional boundary element method (BEM) in the numerical solution of boundary value problems with boundary nodes, in which a fundamental solution of the governing equation is explicitly known. The salient feature of the SBM is to overcome the fictitious boundary in the method of fundamental solution, while keeping all merits of the latter. The method offers several advantages over the classical domain or boundary discretization methods, among which are: * meshless. The method requires neither domain nor boundary meshing but boundary-only discretization points; * integration-free. The numerical integration of singular or nearly singular kernels could be otherwise troublesome, expensive, and complicated, as in the case, for example, the boundary element method; * boundary-only discretization for homogeneous problems. The SBM shares all the advantages of the BEM over domain discretization methods such as the finite element or finite difference methods; * to overcome the perplexing fictitious boundary in the method of fundamental solutions (see Figs. 1 and 2), thanks to the introduction of the concept of the origin intensity factor, which isolates the singularity of the fundamental solutions. The SBM provides a significant and promising alternative to popular boundary-type methods such as the BEM and MFS, in particular, for infinite domain, wave, thin-walled structures, and inverse problems. 奇异边界法（Singular boundary method）是一种与边界元法相对应的边界型数值计算方法，同基本解法、边界节点法、去奇异无网格法、边界粒子法和改进的基本解法等同属于边界型无网格数值离散方法。该类方法的共同特点是通过节点信息建立插值基函数，不需要对区域或者其边界作网格划分，克服了传统基于网格的方法（如有、有限差分法和）对网格的依赖性，特别适合于求解大变形问题、移动边界问题、反问题、薄体结构问题、和复杂-高维几何区域等问题。
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