Nonlinear FE model updating for masonry constructions via linear perturbation and modal analysis

Girardi M., Padovani C., Pellegrini D., Robol L.

Masonry materials  nonlinear elasticity  Modal analysis  Nonlinear Model updating  Linear perturbation  Nonlinear elasticity  Non-linear Model updating 

This paper describes the automated nonlinear model updating procedure for ma-sonry structures implemented in the NOSA-ITACA code. The algorithm, aimed at matchingnumerical and experimental natural frequencies and mode shapes, combines nonlinear staticanalysis, linear perturbation and modal analysis and allows fine-tuning the free parametersof the model. The numerical method is applied to two simple case studies, which prove itseffectiveness.

Publisher: Eccomas

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