Benvenuti nell'Anagrafe della Ricerca d'Ateneo
La valutazione delle attività di ricerca che si svolgono nelle università ha assunto un'importanza rilevante sia per l'intero sistema universitario sia all'interno di ogni singolo ateneo. Roma Tre si è quindi dotata di idonei strumenti informativi in grado di supportare al meglio le azioni di monitoraggio e di valutazione delle attività di ricerca svolte nei propri dipartimentied ha realizzato una Anagrafe della Ricerca di Ateneo.
EnglishA 3D nonlinear constitutive theory is proposed to describe the hysteretic response of non-functionalized carbon nanotube nanocomposite materials caused by the shear stick-slip between the carbon nanotubes and the polymer chains of the hosting matrix. The theory combines the mean-field homogenization method based on the Eshelby equivalent inclusion theory, the Mori–Tanaka homogenization approach, and the concept of inhomogeneous inclusions with inelastic eigenstrains introduced to describe the shear stick-slip. The evolution of this inelastic eigenstrain flow is regulated by a constitutive law based on a micromechanical adjustment of the von Mises function associated to the interfacial stress discontinuity. The 3D model is implemented in explicit dynamic form in a finite element platform called FEniCS. The time integration scheme utilises the Extended Average Mean Value Theorem together with a special form of the Impulse-Momentum Law. Parametric studies show that the predicted damping capacity of carbon nanotube nanocomposites made of epoxy or PEEK polymers is in agreement with previous results. Moreover, a validation of the proposed model is achieved comparing the experimentally obtained force-displacement cycles with the theoretical response of nanocomposite specimens.
| Titolo: | Three-dimensional modeling of interfacial stick-slip in carbon nanotube nanocomposites |
| Autori: | |
| Data di pubblicazione: | 2016 |
| Rivista: | |
| Citazione: | Formica, G., & Lacarbonara, W. (2016). Three-dimensional modeling of interfacial stick-slip in carbon nanotube nanocomposites. INTERNATIONAL JOURNAL OF PLASTICITY, 88, 204-217. |
| Handle: | http://hdl.handle.net/11590/310304 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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