Abstract
In this paper, we construct particle shape functions that reproduce singular functions as well as polynomial functions. We also construct piecewise polynomial convolution partition of unity functions by taking the convolution of the scaled conical window function with the characteristic functions of quadrangular patches (we provide the computer code for this construction). We demonstrate that the reproducing singular particle shape functions yield highly accurate numerical solutions for the singularity problems with crack singularity or a jump boundary data singularity.
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H.-S. Oh was supported in part by funds provided by the University of North Carolina at Charlotte. J. G. Kim was supported in part by the Research Grant of the Kangwon National University. J. G. Kim is a Visiting Professor of the University of North Carolina at Charlotte.
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Oh, HS., Jeong, J.W. & Kim, J.G. The reproducing singularity particle shape functions for problems containing singularities. Comput Mech 41, 135–157 (2007). https://doi.org/10.1007/s00466-007-0174-x
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DOI: https://doi.org/10.1007/s00466-007-0174-x