Geodesic
Shakedown theorems in poroplastic dynamics
Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni, Série 9, Tome 13 (2002) no. 1, pp. 43-53.

Voir la notice de l'article provenant de la source Biblioteca Digitale Italiana di Matematica

The constitutive model assumed in this Note is poroplastic two-phase (solid-fluid) with full saturation and stable in Drucker’s sense. A solid or structure of this material is considered, subjected to dynamic external actions, in particular periodic or intermittent, in a small deformation regime. A sufficient condition and a necessary one are established, by a «static» approach, for shakedown (or adaptation), namely for boundedness in time of the cumulative dissipated energy.
Il modello costitutivo assunto in questa Nota è poroplastico bifase (solido-fluido) a saturazione totale e stabile nel senso di Drucker. Un solido o struttura di questo materiale è considerato soggetto ad azioni esterne dinamiche, in particolare periodiche o intermittenti, in regime di piccole deformazioni. Si dimostrano, in base ad un approccio «statico», una condizione sufficiente e una necessaria per l’adattamento (o «shakedown»), inteso come caratterizzato da limitatezza nel tempo dell’energia dissipata cumulativa. 
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Cocchetti, Giuseppe; Maier, Giulio. Shakedown theorems in poroplastic dynamics. Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni, Série 9, Tome 13 (2002) no. 1, pp. 43-53. http://geodesic.mathdoc.fr/item/RLIN_2002_9_13_1_a3/

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