CINECA IRIS Institutional Research Information System
IRIS è l'Anagrafe della ricerca dell'Università degli Studi di Trento, e ha lo scopo di raccogliere, documentare, conservare e diffondere, anche ad accesso aperto, la produzione scientifica degli autori afferenti all'Università degli Studi di Trento.
EnglishBifurcation of an elastic structure crucially depends on the curvature of the constraints against which the ends of the structure are prescribed to move, an effect that deserves more attention than it has received so far. In fact, we show theoretically and provide definitive experimental verification that an appropriate curvature of the constraint over which the end of a structure has to slide strongly affects buckling loads and can induce: (i) tensile buckling; (ii) decreasing- (softening), increasing- (hardening) or constant-load (null stiffness) postcritical behaviour; and (iii) multiple bifurcations, determining for instance two bifurcation loads (one tensile and one compressive) in a single-degree-of-freedom elastic system. We show how to design a constraint profile to obtain a desired postcritical behaviour and we provide the solution for the elastica constrained to slide along a circle on one end, representing the first example of an inflexional elastica developed from a buckling in tension. These results have important practical implications in the design of compliant mechanisms and may find applications in devices operating in quasi-static or dynamic conditions, even at the nanoscale.
Scheda prodotto non validato
I dati visualizzati non sono stati ancora sottoposti a validazione formale da parte dello Staff di IRIS, ma sono stati ugualmente trasmessi al Sito Docente Cineca (Loginmiur).
| Titolo: | Effects of the constraint’s curvature on structural instability: tensile buckling and multiple bifurcations. | |
| Autori: | Bigoni, Davide; Misseroni, Diego; Noselli, Giovanni; D., Zaccaria | |
| Autori Unitn: | ||
| Titolo del periodico: | PROCEEDINGS - ROYAL SOCIETY. MATHEMATICAL, PHYSICAL AND ENGINEERING SCIENCES | |
| Anno di pubblicazione: | 2012 | |
| Numero e parte del fascicolo: | 2144 | |
| Codice identificativo Scopus: | 2-s2.0-84864612092 | |
| Codice identificativo ISI: | WOS:000305840500003 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1098/rspa.2011.0732 | |
| Handle: | http://hdl.handle.net/11572/92943 | |
| Appare nelle tipologie: | 03.1 Articolo su rivista (Journal article) |
File in questo prodotto:
http://hdl.handle.net/11572/92943
Copyright © 2021