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RESEARCH PAPERS

Transient Compressional Waves in an Infinite Elastic Plate or Elastic Layer Overlying a Rigid Half-Space

[+] Author and Article Information
Julius Miklowitz

California Institute of Technology, Pasadena, Calif.

J. Appl. Mech 29(1), 53-60 (Mar 01, 1962) (8 pages) doi:10.1115/1.3636497 History: Received December 02, 1960; Online September 16, 2011

Abstract

The problem treated is that of an infinite free plate excited symmetrically by two equal and normally opposed step point-loads on its faces. The problem is equivalent to that of the surface normal point-load excitation of an infinite elastic layer, half the thickness of the plate, overlying a rigid half-space with lubricated contact. The formal solution is obtained from the equations of motion in linear elasticity with the aid of a double integral transform technique and residue theory. The stationary phase method, and known characteristics of the governing Rayleigh-Lamb frequency equation, are used to analyze and evaluate numerically the far field displacements. It is shown that the head of the disturbance is composed predominantly of the low-frequency long waves from the lowest mode of wave transmission.

Copyright © 1962 by ASME
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