Imperial College London

DrLorenzoMacorini

Faculty of EngineeringDepartment of Civil and Environmental Engineering

Reader in Structural Engineering
 
 
 
//

Contact

 

+44 (0)20 7594 6078l.macorini

 
 
//

Assistant

 

Ms Ruth Bello +44 (0)20 7594 6040

 
//

Location

 

325Skempton BuildingSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Chisari:2018:10.1016/j.ijsolstr.2018.04.003,
author = {Chisari, C and Macorini, L and Amadio, C and Izzuddin, BA},
doi = {10.1016/j.ijsolstr.2018.04.003},
journal = {International Journal of Solids and Structures},
pages = {224--240},
title = {Identification of mesoscale model parameters for brick-masonry},
url = {http://dx.doi.org/10.1016/j.ijsolstr.2018.04.003},
volume = {146},
year = {2018}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Realistic assessment of existing masonry structures requires the use of detailed nonlinear numerical descriptions with accurate model material parameters. In this work, a novel numerical-experimental strategy for the identification of the main material parameters of a detailed nonlinear brick-masonry mesoscale model is presented. According to the proposed strategy, elastic material parameters are obtained from the results of diagonal compression tests, while a flat-jack test, purposely designed for in-situ investigations, is used to determine the material parameters governing the nonlinear behaviour. The identification procedure involves: a) the definition of a detailed finite element (FE) description for the tests; b) the development and validation of an efficient metamodel; c) the global sensitivity analysis for parameter reduction; and d) the minimisation of a functional representing the discrepancy between experimental and numerical data. The results obtained by applying the proposed strategy in laboratory tests are discussed in the paper. These results confirm the accuracy of the developed approach for material parameter identification, which can be used also in combination with in-situ tests for assessing existing structures. Practical and theoretical aspects related to the proposed flat-jack test, the experimental data to be considered in the process and the post-processing methodology are critically discussed.
AU - Chisari,C
AU - Macorini,L
AU - Amadio,C
AU - Izzuddin,BA
DO - 10.1016/j.ijsolstr.2018.04.003
EP - 240
PY - 2018///
SN - 0020-7683
SP - 224
TI - Identification of mesoscale model parameters for brick-masonry
T2 - International Journal of Solids and Structures
UR - http://dx.doi.org/10.1016/j.ijsolstr.2018.04.003
UR - http://hdl.handle.net/10044/1/58845
VL - 146
ER -