000019969 001__ 19969
000019969 005__ 20170118182349.0
000019969 04107 $$aeng
000019969 046__ $$k2017-01-09
000019969 100__ $$aMacorini, Lorenzo
000019969 24500 $$aNonlinear Mesoscale Modelling of Urm Structures Under Cyclic Loading

000019969 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019969 260__ $$b
000019969 506__ $$arestricted
000019969 520__ $$2eng$$aGiven the significant seismic vulnerability and complex behaviour of unreinforced masonry (URM) structures, detailed numerical modelling is necessary to provide better understanding and reliable prediction of their response under earthquake loading. However the development of accurate numerical models for URM remains a major challenge, due to the characteristics of the material, most notably the strong influence of the mesostructure and of the properties of the constituents. In previous research, most approaches employ macroscale or 2D mesoscale models, failing to fully represent the material in a generic way. Certain more advanced 3D mesoscale approaches have been developed mostly for monotonic loading conditions and their scale of application is restricted by the increased computational cost. This work proposes a modelling strategy which allows accurate full 3D simulation of URM under cyclic loading conditions with robustness and computational efficiency. A 3D quadratic mesoscale model is employed and a novel cyclic interface constitutive law is presented. The model is incorporated in a hierarchic partitioning framework which significantly reduces the computational cost broadening its applicability.

000019969 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019969 653__ $$amesoscale model, frictional interface material model, cyclic loading, nonlinear behaviour of URM structures

000019969 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019969 720__ $$aMacorini, Lorenzo$$iIzzuddin, Bassam$$iMinga, Eleni
000019969 8560_ $$ffischerc@itam.cas.cz
000019969 8564_ $$s1136843$$uhttps://invenio.itam.cas.cz/record/19969/files/4826.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4826.
000019969 962__ $$r16048
000019969 980__ $$aPAPER