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Title: Frequency spectra of nonlinear elastic pulse-mode waves

The frequency spectrum of simple waves is used to derive a closed form analytical representation for the frequency spectrum of damped nonlinear pulses in elastic materials. The damping modification of simple wave theory provides an efficient numerical method for calculating propagating wave forms. The spectral representation, which is neither pulse length nor amplitude limited, is used to obtain estimates for parameters of the nonlinear state relation for a sandstone sample from published experimental data, and the results are compared with those of other theories. The method should have broad application to many solids.
Authors:
; ;  [1]
  1. EES-4, MS D443, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
Publication Date:
OSTI Identifier:
286913
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of the Acoustical Society of America; Journal Volume: 100; Journal Issue: 3; Other Information: PBD: Sep 1996
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; SOUND WAVES; WAVE PROPAGATION; NONLINEAR PROBLEMS; PULSES; FREQUENCY DEPENDENCE; DAMPING; WAVE FORMS; ANALYTICAL SOLUTION