The propagation of transient waves in a homogeneous, isotropic, linearly elastic half space excited by a traveling normal point load is investigated. The load is suddenly applied and then it moves rectilinearly at a constant speed along the free surface. The displacements are derived for the interior of the half space and for all load speeds. Wave-front expansions are obtained from the exact solution, in addition to results pertaining to the steady-state displacement field. The limit case of zero load speed is considered, yielding new results for Lamb’s point load problem.
Transient Excitation of an Elastic Half Space by a Point Load Traveling on the Surface
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Gakenheimer, D. C., and Miklowitz, J. (September 1, 1969). "Transient Excitation of an Elastic Half Space by a Point Load Traveling on the Surface." ASME. J. Appl. Mech. September 1969; 36(3): 505–515. https://doi.org/10.1115/1.3564708
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