Research Doctorate
My education has been also continued after the degree with several
courses, some of them inserted in my Ph.D. program.
In this field my activities are:
- education, attending courses and workshop;
- didactis, co-working with U-Parma professors;
- research, prosecuting my degree thesis work.
Activities
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• Course "Il futuro della progettazione sismica: approcci agli spostamenti", EUCENTRE - European Centre for Training and Research in Earthquake Engineering, prof. G. M. Calvi; Pavia, 30 November and 1 December 2007. |
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• International Seminar "Seismic isolation and energy dissipation for the protection of petrochemical facilities against earthquakes", Research Project INDEPTH; Bologna, 31 August 2005.
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• Course "Stochastic computational Mechanics", Institute of Structural Engineering, University of Natural Resources and Applied Life Sciences (BOKU), Vienna, prof. Drahomír Novák (Brno University of Technology, Czech Republic), Radomir Pukl (Cervenka Consulting, Praha, Czech Republic); Vienna, 16 and 17 November 2004.
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• Workshop "Historical buildings of Iran", Dipartimento di Ingegneria Civile, dell'Ambiente, del Territorio e Architettura dell'Università di Parma, prof. Mehrdad Hejazi (University of Isfahan, Iran); Parma, 13 July 2004.
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• Workshop "Ripristino anticorrosivo strutturale e riabilitazione sismica mediante materiali compositi", Tecnochem Italiana - Dipartimento di Ingegneria Civile, dell'Ambiente, del Territorio e Architettura dell'Università di Parma - Ordine degli Ingegneri di Parma, ing. Luigi Perrone (Tecnochem), ing. Daniele Ferretti (Università di Parma); Parma, 17 March 2004.
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• Course "Tecniche di calcolo contenute nella normativa sismica allegata all'Ordinanza N. 3274 - 20 marzo 2003", Accordo di collaborazione tra il Consiglio Nazionale degli Ingegneri ed il Dipartimento della Protezione Civile - Ordine degli Ingegneri di Parma; Parma, 80 hours, January-March 2004.
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• Course "Il metodo degli elementi finiti per l'analisi non lineare delle strutture", Scuola di Dottorato in Ingegneria delle Strutture, Politecnico di Milano, prof. Umberto Perego; Milano, 20 hours, November 2003-February 2004.
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• Course "Meccanica del danneggiamento", Scuola di Dottorato in Ingegneria delle Strutture, Politecnico di Milano, prof. Claudia Comi; Milano, 20 hours, November 2003-January 2004.
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| • Workshop "Criteri di progettazione e interventi di consolidamento e adeguamento per costruzioni in zona sismica", Università di Bologna, prof. Pier Paolo Diotallevi e ing. Luca Landi; Bologna, 11 July 2003. |
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• Symposium "Ordinanza P.C.M. 20 marzo 2003 n. 3274: primi elementi in materia di criteri generali per la classificazione sismica del territorio nazionale e di normative tecniche per le costruzioni in zona sismica", Università di Parma - Ordine degli Ingegneri di Parma; Parma, 20 June 2003.
With: prof. Gian Michele Calvi (Università di Pavia), prof. Ivo Iori (Università di Parma), prof. Vincenzo Petrini (Politecnico di Milano).
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• Workshop "Progettare in zona sismica", Associazione Ingegneri e Architetti della Provincia di Bologna – STS Software Tecnico Scientifico; Bologna, 11 April 2003.
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• Course "Meccanica dei materiali compositi", Scuola di Dottorato in Ingegneria delle Strutture, Politecnico di Milano, prof. Alberto Taliercio; Milano, 20 hours, March-April 2003.
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• Course "Applicazioni del Metodo agli Elementi Finiti nell'analisi di strutture dell'ingegneria", Università degli Studi di Parma - Ordine degli Ingegneri di Parma; Parma, 28 hours, October-November 2002.
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During the academic year 2003-2004 I teached some lessons in Computer aided analysis of
structures course at U-Parma; lessons were completed using computer code TEL2D I wrote (see "softwares").
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Reinforced concrete (RC) structures exhibit a complex behavior even for low load levels. Non-linear compressive stress-strain relations, tensile cracking, post cracking softening and interaction effects between concrete and reinforcing bars are the main sources of a highly non- linear and complicated response. In order to capture the real structural behavior, sophisticated numerical tools are necessary to take into account all the remarkable phenomena and to perform the time-consuming non-linear calculations.
In this doctorate dissertation, the three-dimensional (3D) constitutive model for non-linear analysis of RC structures 3D-PARC – Three-Dimensional Physical Approach for Reinforced Concrete, is presented. The 3D study started some years ago with the author's graduate thesis which laid the foundations of the model. That work was an extension of PARC, a numerical model for membrane elements subjected to plane stress developed at the Department of Civil Engineering of the University of Parma.
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 The triaxial failure surface implemented in 3D-PARC.
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Application of 3D-PARC to plain concrete beams.
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The research carried out during the doctorate, deepens the investigation of the model theory and the development of numerical tools to provide efficacy and power to its application. Starting from the work already done, a new approach is developed and implemented. However, the basic philosophy does not change: the model remains as close as possible to the physical reality, without using numerical devices which are often “unphysical”. |
The starting point for the model formulation is the study of physical phenomena (concrete subjected to multiaxial stresses, aggregate bridging and interlock, tension stiffening, dowel action) through single basic studies which are assembled to build the model.
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Application of 3D-PARC to reinforced concrete beams.
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The developed theory is implemented in a FORTRAN code which can be used within the commercial Finite Element (FE) code ABAQUS. In this way, the model can be used to analyze structures subjected to complex stress states. In fact, the FE formulation gives the possibility to model a wide range of structures independently on the geometry. Subsequently, the theory formulation as well as the numerical implementation are validated by some significant comparisons with experimental tests taken from the literature.
During a six-month collaboration with the Institute of Structural Engineering (IKI) of the University of Natural Resources and Applied Life Sciences – BOKU in Vienna, the software package SARA, which includes the RC-oriented FE code ATENA and the statistical module FREET, was also used. This research program produced the FE analysis of RC corbels is reported in one chapter of the dissertation.
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The basic cracked reinforced concrete element investigated by 3D-PARC.