# A model updating procedure to enhance structural analysis in the FE code NOSA-ITACA

## TL;DR

This paper presents a model updating procedure in NOSA-ITACA to improve the accuracy of structural analysis of masonry structures by matching experimental data, demonstrated on historical structures.

## Contribution

It introduces a novel model updating method for finite-element analysis of masonry structures, enhancing accuracy in historical building assessments.

## Key findings

- Improved matching of experimental frequencies and mode shapes.
- Successful application to historical masonry structures.
- Enhanced robustness of the numerical method.

## Abstract

This paper describes the model updating procedure implemented in NOSA-ITACA, a finite-element code for the structural analysis of masonry constructions of historical interest. The procedure, aimed at matching experimental frequencies and mode shapes, allows fine-tuning calculation of the free parameters in the model. The numerical method is briefly described, and some issues related to its robustness are addressed. The procedure is then applied to a simple case study and two historical structures in Tuscany, the Clock Tower in Lucca and the Maddalena bridge in Borgo a Mozzano.

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Source: https://tomesphere.com/paper/1902.03949