For elastic-perfectly plastic solids (or structures) subjected to quasi-static cyclic loads, variational methods are presented for the direct eyâluation of the post-transient residual stresses, that is, the residual stresses in the structure at the end of the transient response phase, consequence of the plastic strains therein produced and crucial to predict the subsequent steady structural behaviour. The problem of the evaluation of the number of cycles spanned by the transient response is also discussed.
Con riferimento a solidi (o strutture) di materiale elastico perfettamente plastico e soggetti a carichi ciclici di tipo quasi-statico, si presentano dei metodi variazionali per la determinazione diretta delle tensioni residue post-transitorie, cioè delle tensioni residue esistenti al momento dell'esaurimento della fase transitoria della risposta strutturale, tensioni che sono conseguenza delle deformazioni plastiche prodotte in tale fase e che sono cruciali al fine di predire il tipo di risposta stazionaria che ne segue. Viene anche discusso il problema della valutazione del numero dei cicli contenuti nella fase transitoria.
@article{RLIN_1993_9_4_2_133_0,
author = {Castrenze Polizzotto},
title = {The assessment of the residual post-transient stresses in elastic-perfectly plastic solids subjected to cyclic loads},
journal = {Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni},
volume = {4},
year = {1993},
pages = {133-144},
zbl = {0773.73033},
mrnumber = {1233401},
language = {en},
url = {http://dml.mathdoc.fr/item/RLIN_1993_9_4_2_133_0}
}
Polizzotto, Castrenze. The assessment of the residual post-transient stresses in elastic-perfectly plastic solids subjected to cyclic loads. Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni, Tome 4 (1993) pp. 133-144. http://gdmltest.u-ga.fr/item/RLIN_1993_9_4_2_133_0/
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