Longitudinal Impact of Cylindrical Shells With Discontinuous Cross-Sectional Area

[+] Author and Article Information
R. W. Mortimer, J. L. Rose

Drexel University, Philadelphia, Pa.

A. Blum

Department of Mechanics and Structures, Advanced Study Group, Drexel University, Philadelphia, Pa.

J. Appl. Mech 39(4), 1005-1010 (Dec 01, 1972) (6 pages) doi:10.1115/1.3422820 History: Received June 08, 1971; Revised August 30, 1971; Online July 12, 2010


The reflections and transmissions of longitudinal strain pulses in cylindrical shells having cross-sectional area discontinuities are studied both analytically and experimentally. Three different theories were used to analyze this problem: the first, termed “bending” theory, includes the transverse shear, radial inertia, and rotary inertia effects; the second is based on a modified “membrane” theory; the last is derived from the “uniaxial” theory. Solutions were obtained by solving each of the three systems of governing equations by the method of characteristics. The longitudinal and circumferential incident, reflected, and transmitted strain pulses calculated from the bending and membrane theories are shown to be in good agreement with the experimental results, whereas the uniaxial comparisons are poor. In addition, the calculated reflected and transmitted stress ratios are in good agreement with the experimental results; the ratios obtained from the uniaxial theory are shown to be generally inadequate.

Copyright © 1972 by ASME
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