An accurate and fast failure simulation for masonry walls is still an active field of research, due to its fundamental role in predicting the overall response of masonry structures under seismic and other extreme natural and manoriginated events. Multiscale models have been successfully exploited for achieving this task, being characterized by high computational efficiency, especially in the presence of strong nonlinearities due to multiple microcrack initiation and propagation. In this paper, a novel multiscale/multidomain approach for nonlinear analysis of masonries is presented, based on a couple-stress homogenization for undamaged regions and an adaptive strategy for triggering the macro-to-micro switching operations. An extended validation of the proposed approach is presented, via suitable comparisons with a micromechanical model, here regarded as a benchmark model, that finely describes the microstructure, based on the combined finite/discrete element method (FEM/DEM). A critical discussion of the obtained numerical results has shown the efficacy of the proposed models as well as their limits of application.

A multiscale/multidomain model for the failure analysis of masonry walls: a validation with a combined FEM/DEM approach

Reccia, Emanuele;
2018-01-01

Abstract

An accurate and fast failure simulation for masonry walls is still an active field of research, due to its fundamental role in predicting the overall response of masonry structures under seismic and other extreme natural and manoriginated events. Multiscale models have been successfully exploited for achieving this task, being characterized by high computational efficiency, especially in the presence of strong nonlinearities due to multiple microcrack initiation and propagation. In this paper, a novel multiscale/multidomain approach for nonlinear analysis of masonries is presented, based on a couple-stress homogenization for undamaged regions and an adaptive strategy for triggering the macro-to-micro switching operations. An extended validation of the proposed approach is presented, via suitable comparisons with a micromechanical model, here regarded as a benchmark model, that finely describes the microstructure, based on the combined finite/discrete element method (FEM/DEM). A critical discussion of the obtained numerical results has shown the efficacy of the proposed models as well as their limits of application.
2018
masonry modeling; multiscale methods; multidomain approach; couple-stress continua; FEM/DEM; nonlinear analyses; in-plane failure
File in questo prodotto:
File Dimensione Formato  
JMC-26988 Trovalusci Final.pdf

Solo gestori archivio

Descrizione: Versione editoriale
Tipologia: versione editoriale (VoR)
Dimensione 1.41 MB
Formato Adobe PDF
1.41 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
2018_JMC. Reccia, Leonetti, Trovalusci, Cecchi - POSTPRINT (Proof).pdf

accesso aperto

Descrizione: Versione post-print (author's proof)
Tipologia: versione post-print (AAM)
Dimensione 6.98 MB
Formato Adobe PDF
6.98 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/259912
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 60
  • ???jsp.display-item.citation.isi??? 52
social impact