An Approximate Technique for Dynamic Elastic-Plastic Analysis

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...

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Bibliographic Details
Published in:Journal of applied mechanics 1994-12, Vol.61 (4), p.907-913
Main Authors: Giambanco, F, Lo Bianco, M, Palizzolo, L
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
Solid mechanics
Strength of materials (elasticity, plasticity, buckling, etc.)
Structural analysis. Stresses
Structural and continuum mechanics
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
Vibrations and mechanical waves
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Summary: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.
ISSN:0021-8936
1528-9036
DOI:10.1115/1.2901576