The Transient Field Under a Point Force Acting on an Infinite Strip

[+] Author and Article Information
L. M. Brock

Dept. of Engineering Mechanics, University of Kentucky, Lexington, KY 40506

J. Appl. Mech 53(2), 321-325 (Jun 01, 1986) (5 pages) doi:10.1115/1.3171759 History: Received March 28, 1985; Revised September 12, 1985; Online July 21, 2009


As a prelude to studying the transient stresses in a notched bar under impact, the transient stress and velocity field in the cross-section under a point force acting on one surface of an infinite elastic strip is examined. The point force is suddenly applied and normal to the surface. By transform methods, closed-form expressions for the transient field are obtained and used to study the multiple wave reflection process noticeably affects the field. In particular, the normal stress on the cross-section, tensile for the most part before the arrival of reflections, subsequently becomes essentially compressive.

Copyright © 1986 by ASME
Topics: Force , Strips , Stress , Reflection , Waves
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