An Approximate Technique for Dynamic Elastic-Plastic Analysis

[+] Author and Article Information
F. Giambanco, M. Lo Bianco, L. Palizzolo

Dipartimento di Ingegneria Strutturale e Geotecnica, DISEG, Università di Palermo, Viale delle Scienze, 1-90128 Palermo, Italy

J. Appl. Mech 61(4), 907-913 (Dec 01, 1994) (7 pages) doi:10.1115/1.2901576 History: Received March 02, 1992; Revised September 22, 1993; Online March 31, 2008


The possibility of obtaining an approximate sufficiently reliable response for elasticplastic discretized structures subjected to dynamic load (kinematical and/or mechanical), with alow computational effort, has been considered. A suitable technique to this effect comes from the form of the dynamic influence matrix of imposed plastic strains on self-stresses, which is shaped by adding up a sparse time-dependent matrix and a block diagonal time-independent matrix (which is the sum of two block diagonal matrices). Several cases of practical interest have been studied, among these cases a special one where all the degrees-of-freedom are dynamic. The technique is compared to other approximate techniques. The structures the elements of which have monodimensional elastic domain are considered with special attention.

Copyright © 1994 by The American Society of Mechanical Engineers
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