Imperial College London
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ProfessorBassamIzzuddin

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of Computational Structural Mechanics
 
 
 
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Contact

 

+44 (0)20 7594 5985b.izzuddin Website

 
 
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Assistant

 

Ms Ruth Bello +44 (0)20 7594 6040

 
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Location

 

330Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Chisari:2020:10.1615/IntJMultCompEng.2020031740,
author = {Chisari, C and Macorini, L and Izzuddin, B},
doi = {10.1615/IntJMultCompEng.2020031740},
journal = {International Journal for Multiscale Computational Engineering},
pages = {241--263},
title = {Multiscale model calibration by inverse analysis for nonlinear simulation of masonry structures under earthquake loading},
url = {http://dx.doi.org/10.1615/IntJMultCompEng.2020031740},
volume = {18},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The  prediction  of  the  structural  response  of  masonry  structures  under  extreme  loading conditions, including earthquakes,requiresthe use of advanced material descriptionsto represent the nonlinear behaviour  of  masonry. In  general, micro-and  mesoscale  approaches are very computationally demanding, thus at present they are used mainly for detailed analysis of small masonry components. Conversely  macroscale  models,  where  masonry  is  assumed  as  a  homogeneous  material, aremore efficient and suitable for nonlinear analysis of realistic masonry structures. However, the calibration of the material  parameters  for such  models,  which  is  generally  basedon  physical  testing  of  entire masonry  components, remains  an  open  issue.  In  this  paper,  a  multiscale  approach  is  proposed,  in which an accuratemesoscale modelaccounting for the specific  masonry bond is utilised invirtual tests for the calibration of a more efficient macroscale representation assumingenergy equivalence between the two scales. Since the calibration is performed offlineat the beginning of the analysis, the method  is  computationally  attractive  compared  to alternativehomogenisation  techniques.  The proposed methodologyis  applied  to  a  case  study consideringthe  results  obtained  in  previous experimental testson masonry components subjected to cyclic loading, and on a masonry building under pseudo-dynamic conditions representingearthquake loading.The results confirmthepotential of  the  proposedapproach and  highlight somecritical issues, such asthe  importance of selecting appropriatevirtual  tests for  model  calibration,which can significantlyinfluence accuracy  and robustness.
AU  - Chisari,C
AU  - Macorini,L
AU  - Izzuddin,B
DO  - 10.1615/IntJMultCompEng.2020031740
EP  - 263
PY  - 2020///
SN  - 1543-1649
SP  - 241
TI  - Multiscale model calibration by inverse analysis for nonlinear simulation of masonry structures under earthquake loading
T2  - International Journal for Multiscale Computational Engineering
UR  - http://dx.doi.org/10.1615/IntJMultCompEng.2020031740
UR  - http://hdl.handle.net/10044/1/75130
VL  - 18
ER  -
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