Abstract
The accuracy of artificial boundary conditions plays an important role in the dynamic finite element analysis of unbounded media. By loading the solid skeleton an uniformly distributed triangular pulse on the approximate stress boundary and the original stress boundary respectively, the accuracy of the approximate artificial boundary is analysed. The calculation difference of radial displacement decreases with the increase of distance from artifical boundary to the scattering center, i.e. only when the artificial boundary are far enough can the accuracy be satisfied.
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