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An Improved multi-domain preconditioner for fast multipole boundary element method in large-scale elasticity problems with complex interfaces
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DOI：10.1016/j.cma.2026.119035.png)
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Abstract
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Efficient numerical simulation of large-scale elastic problems with complex multi-domain interfaces presents significant challenges due to the limitations of conventional preconditioners in the Fast Multipole Boundary Element Method (FMMBEM). In traditional leaf-based preconditioners, coefficient matrices of leaf cells typically involve only nodes within each subdomain, neglecting the coupling of interface nodes shared with neighboring subdomains. This oversight can lead to non-invertible matrices for interface leaf cells, restricting the applicability of FMMBEM to multi-domain elasticity problems.
Keywords:
multi-domain preconditioner
fast multipole boundary element method
large-scale elasticity problems
complex interfaces
numerical simulation
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7.3
Papers:
1.3W
Citations:
5.6W
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