Obiettivo Understanding how materials respond to external mechanical perturbation is a central problem of science and engineering. While for most practical purposes it is useful to idealize the mechanical response of a material as a deterministic function of the externally applied perturbation, disorder and fluctuations are unavoidable, leading to sample-to-sample variations and non-trivial size effects. The size dependence of strength is a well known but still unresolved issue in the fracture of materials and structures. The difficulty in addressing this problem stems from the complex interplay between microstructual heterogeneity and long-range elastic interactions. Furthermore, in micro and nanoscale samples, the plastic yield strength displays size effects and strain bursts, features that are not present in macroscopic samples where plasticity is a smooth process. Large fluctuations both in fracture processes and in microscale plasticity make the use of conventional continuum mechanics problematic and calls instead for a statistically based approach. These problems are becoming particularly important in the current miniaturization trend towards nanoscale devices, since the relative amplitude of fluctuations grows as the sample size is reduced. In this project, concepts and tools of statistical mechanics are used to address size effects and fluctuations in the irreversible deformation and failure of materials. The general objective is to provide a quantitative theory that can be used as base for setting reliable safety factors. The theory will be based on the renormalization group and will be guided and validated by large scale numerical simulations such as molecular dynamics, discrete dislocation dynamics and disordered network models. Finally, we will analyze experimental data present in the literature. Campo scientifico natural sciencesphysical sciencesclassical mechanicsstatistical mechanics Programma(i) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Argomento(i) ERC-AG-PE8 - ERC Advanced Grant - Products and process engineering Invito a presentare proposte ERC-2011-ADG_20110209 Vedi altri progetti per questo bando Meccanismo di finanziamento ERC-AG - ERC Advanced Grant Istituzione ospitante UNIVERSITA DEGLI STUDI DI MILANO Contributo UE € 896 423,82 Indirizzo Via Festa Del Perdono 7 20122 Milano Italia Mostra sulla mappa Regione Nord-Ovest Lombardia Milano Tipo di attività Higher or Secondary Education Establishments Contatto amministrativo Fortunato Laface (Dr.) Ricercatore principale Stefano Zapperi (Prof.) Collegamenti Contatta l’organizzazione Opens in new window Sito web Opens in new window Costo totale Nessun dato Beneficiari (3) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto UNIVERSITA DEGLI STUDI DI MILANO Italia Contributo UE € 896 423,82 Indirizzo Via Festa Del Perdono 7 20122 Milano Mostra sulla mappa Regione Nord-Ovest Lombardia Milano Tipo di attività Higher or Secondary Education Establishments Contatto amministrativo Fortunato Laface (Dr.) Ricercatore principale Stefano Zapperi (Prof.) Collegamenti Contatta l’organizzazione Opens in new window Sito web Opens in new window Costo totale Nessun dato ISTITUTO PER L'INTERSCAMBIO SCIENTIFICO Italia Contributo UE € 739 170,45 Indirizzo VIA CHISOLA 5 10126 Torino Mostra sulla mappa Regione Nord-Ovest Piemonte Torino Tipo di attività Research Organisations Contatto amministrativo Roberto Palermo (Dr.) Collegamenti Contatta l’organizzazione Opens in new window Sito web Opens in new window Costo totale Nessun dato CONSIGLIO NAZIONALE DELLE RICERCHE Italia Contributo UE € 864 405,73 Indirizzo PIAZZALE ALDO MORO 7 00185 Roma Mostra sulla mappa Regione Centro (IT) Lazio Roma Tipo di attività Research Organisations Contatto amministrativo Tiziana Collodel (Dr.) Collegamenti Contatta l’organizzazione Opens in new window Sito web Opens in new window Costo totale Nessun dato
