Summary
The problem of concentrated line load moving with supersonic speed along the boundary of an isotropic heterogeneous medium has been solved as a plane strain problem. The stresses and displacements in the heterogeneous case considered are found to decay exponentially with distance.
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References
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Chakrabarty, S.K., De, T.K. On stresses and displacements due to a moving line load over the plane boundary of a heterogeneous elastic half-space. PAGEOPH 85, 214–218 (1971). https://doi.org/10.1007/BF00875409
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DOI: https://doi.org/10.1007/BF00875409