Pulse Propagation in a Helix—Theory and Experiment

[+] Author and Article Information
J. W. Phillips

Department of Theoretical and Applied Mechanics, University of Illinois at Urbana-Champaign, Urbana, Ill.

J. Appl. Mech 41(4), 1047-1051 (Dec 01, 1974) (5 pages) doi:10.1115/1.3423431 History: Received December 01, 1973; Revised May 01, 1974; Online July 12, 2010


Wittrick’s general one-dimensional equations governing the propagation of small elastic disturbances in a helical waveguide are solved by the method of characteristics, and numerical results for a particular interface problem are compared with strain gage records from an impacted experimental model. The agreement between theory and experiment is found to be excellent for the type of pulse considered, namely, an initially longitudinal compressive pulse approximately seventy rod-diameters in length.

Copyright © 1974 by ASME
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