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Cracked-Beam and Related Singularity ProblemsTang, Lin-Tai 29 June 2001 (has links)
Cracked beam problem is an elliptic boundary value problem with singularity. It is often used as a testing model for numerical methods.
We use numerical and symbolic boundary approximation methods and boundary collocation method to compute its extremely high accurate solution with global error $O(10^{-100})$.
This solution then can be regarded as the exact solution. On the other hand, we vary the boundary conditions of this problem to obtain several related models.
Their numerical solutions are compared to those of cracked beam and Motz problems, the prototypes of singularity problems.
From the comparison we can conclude the advantage of each model and decide the best testing model for numerical methods.
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