NOSA-ITACA is a software product of the Mechanics of Materials and Structures Laboratory of ISTI-CNR, distributed via the http://www.nosaitaca.it/software/ website. The package includes SALOME v8.3.0, and is available for Ubuntu 14.04 and 16.04. NOSA-ITACA enables you to conduct both linear and nonlinear static analyses and modal analyses. NOSA-ITACA can be used to study the static behavior of masonry buildings of historic and architectural interest and model the effectiveness of strengthening operations.
Example of Modal Analysis performed by NOSA-ITACA
The following picture shows a screenshot of the NOSA-ITACA desktop enviroment during a modal analysis. In particular the first and the third mode shape of the San Frediano bell Tower in Lucca (Italy) are shown. The structure is discretized into 45641 eight-node brick elements (element no. 8, NOSA-ITACA element library) with 136923 degrees of freedom.
For more details sees: R.M. Azzara, G. De Roeck, E. Reynders, M. Girardi, C. Padovani and D. Pellegrini, “Assessment of the dynamic response of an ancient masonry tower in Lucca via ambient vibrations” Structural Analysis of Historical Constructions - Anamnesis, diagnosis, therapy, controls-Van Balen & Verstrynge (Eds) ©2016 Taylor & Francis Group, London, ISBN 978-1-138-02951-4 Paper n°84.