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SUMMARY:Optimization-based rigid block models for historical masonry struc
 tures: from limit analysis to nonlinear dynamics
DTSTART:20250307T121500
DTEND:20250307T131500
DTSTAMP:20260527T103214Z
UID:f40d4cb70134a0f1b33cc466f884a911d7924ec1aec608dd1e63e54c
CATEGORIES:Conferences - Seminars
DESCRIPTION:Francesco Portioli\nAbstract\nThe talk presents an overview of
  the research activities carried out at the University of Naples in the la
 st decade which were aimed at developing rigid block models and software t
 ools for the analysis of historical masonry structures. In the proposed mo
 dels\, masonry is schematized as an assemblage of rigid blocks interacting
  at interfaces\, for which a no-tension frictional behavior is generally a
 ssumed. Vertical and lateral loads as well as support movements are consid
 ered. Moving from rigid block models developed for limit analysis\, the se
 minar illustrates the research path and the main concepts which inspired t
 he development of a unified approach to rigid block modeling. The approach
  relies on an optimization-based formulation for nonlinear time-history an
 alysis which is equivalent to the system of equations governing the behavi
 or of rigid block assemblages and comprises as special cases formulations 
 for nonlinear static and limit analysis. In order to capture the behavior 
 of masonry with high-strength mortar joints\, recent extensions of the for
 mulations previously developed for nonlinear static analysis with no-tensi
 on interfaces to elasto-plastic cohesive interfaces with damage behavior a
 re illustrated. The main functionalities and organization of the software 
 tools developed on the basis of the proposed formulations for limit analys
 is as well as for nonlinear static and time-history analysis are also pres
 ented. Finally\, applications to numerical and experimental tests from lit
 erature and to full-scale case studies are illustrated to show potentialit
 ies and computational efficiency of the developed models. \n\n\nShort bio
 \nDr. Francesco P.A. Portioli is an Associate Professor of Structural Engi
 neering at the University of Naples Federico II since October 2018. He rec
 eived his PhD by the University of Chieti Pescara “G. D’Annunzio” in
  2004\, discussing a thesis on the structural behavior of masonry vaults s
 trengthened with FRP. He served as Postdoctoral Researcher and was Assista
 nt Professor at the University of Naples from 2004 until 2018. He is a lec
 turer in undergraduate and postgraduate courses at the Department of Archi
 tecture and at the School of Specialization in Architectural Heritage and 
 Landscape in Naples. His main research interests include safety assessment
  methods and modeling approaches for historical masonry structures and ste
 el structures. He is author of several papers on international journals an
 d conference articles. He is also the author of book chapters of national 
 and international books\, dealing with life-time structural engineering an
 d seismic retrofitting of historical masonry structures.\n\nSandwiches are
  offered at the end of the seminar.\n 
LOCATION:GC B3 31 https://plan.epfl.ch/?room==GC%20B3%2031 https://epfl.zo
 om.us/j/68487738448
STATUS:CONFIRMED
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