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Workshop "Towards Digital Twins by embracing FAIR 3D architecture information" by Francesca Noardo - June 1st 2022 - 9-13.30 - Aula 049 – Scuola di Ingegneria - Via S. Marta 3 – Firenze - Download here the program

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COLD FORMED STEEL FOR CIVIL AND INDUSTRIAL STRUCTURES - Workshop by Prof. Maurizio Orlando - 17th and 24th May - Aula 35 - Scuola di Ingegneria - Via S.Marta 3, Firenze - Download the program

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Frequently used and misused concepts in beam analysis: the center of shear and the center of twist - Lectio Magistralis by Prof. Ing. Luciano Rosati  - 6th May 2022 - 10-13 - Aula Magna 327 Polo Didattico Morgagni 

Download here the program

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Lectio Magistralis Prof. Arch. Carlo Blasi - Notre Dame: strategie di una ricostruzione
24 Marzo 2022 - ore 10-13 - Aula Magna 327 Polo Didattico Morgagni

Scarica qui il programma - google form per la registrazione: https://docs.google.com/forms/d/e/1FAIpQLSeKkJtv_6pUsuEhhHbXeOmpSaWihToq5ZBT3Fj61d_Z8RXG0A/viewform?usp=pp_url

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Modellazione numerica con DualSPHysics in ingegneria marittima: teoria e pratica e lezioni apprese dopo le prime manovre del MOSE

Workshop A-MARE e GNRAC il 27-29/10/2021 a S.Marta - scarica la brochure

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LIROMAN - Laboratorio per l’Innovazione e per l’applicazione della ROboticanel Monitoraggio degli Ambienti Naturali, di vita e di lavoro

Giovedì 27 febbraio 2020 - POLO UNIVERSITARIO CITTÀ DI PRATO - Piazza Giovanni Ciardi, 25 -Prato 4 -Scarica la locandina

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Le Acque di Leonardo

Martedì 21 maggio 2019 - ore 9,00 Sala Comparetti - Biblioteca Umanistica Piazza Brunelleschi, 4 - Scarica la locandina

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La Nuova Gerusalemme in 3D

Sabato 16 e Domenica 17 marzo 2019 - Nuova Gerusalemme, S. Vivaldo, Montaione - Scarica la locandina

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Acque Nascoste. Il reticolo idrografico minore della Piana fiorentina tra memoria, rischio e gestione.

Martedì 22 maggio 2018, ore 16:00
Aula Magna Palazzo Fenzi, Via San Gallo, 10 - Firenze
Locandina (pdf)

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La solidarietà della Svizzera per Firenze e la Toscana alluvionata nel 1966. Il bosco degli Svizzeri

22 novembre 2017 -  Palazzo Medici Ricciardi (Sala Luca Giordano) - via C. Cavour, 3 50122, Firenze

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Forma Fluens: Discorsi sull’acqua nel territorio fiorentino

Giovedì 11 maggio 2017 dalle ore 9:15 alle ore 18:30 -  Sala Luca Giordano,Palazzo Medici Riccardi- Firenze
Programma (pdf)

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Incontro di presentazione del Gruppo Alluvioni 

Venerdì  31 Marzo 2017 dalle 10:00 alle 16.30, Aula Magna del Rettorato - piazza S. Marco, 4 Firenze
Programma (pdf

 

 

Frequently used and misused concepts in beam analysis: the center of shear and the center of twist

Lectio Magistralis by Prof. Ing. Luciano Rosati 

Download here the program

 

The center of shear and the center of twist are two basic concepts in solid and structural mechanics that often overlaps in a fuzzy way although their meaning and properties are quite different.

Actually, the center of twist is unambiguously defined both for the solid model by Saint Venant and the beam model by Euler-Timoshenko; furthermore, its position depends solely upon the beam cross section. Conversely, the center of shear is unambiguously defined for the solid model while it has two different definitions for the beam model, namely the geometric one by Goodier and the energetic one by Trefftz.

Surprisingly, the second definition of the center of shear provides a point that coincides with the center of twist while the geometric definition yields a point that is not only different from the center of twist but it also depends upon the material properties of the beam.

Moreover, the center of shear tends to coincide with the center of twist in the technically significant case of thin-walled beams or if the Poisson ratio is null, making one naturally ask if the geometric definition, by far the most diffused one in books and softwares, is really necessary.

We provide an answer to this question by proving that the center of twist is the only point that is really legitimate to provide kinematic and energetic uncoupling between shear and torsion both for the solid model and the beam one and to ensure a perfect symmetry with the role played by the center of gravity for normal stresses. We also show that the shear deformability tensor, ensuring kinematic and energetic equivalence between the cantilever beam and the solid model, only depends upon the center of twist and the position of the transverse force.

 

Prof. Ing. Luciano Rosati

  • Graduated with honors in Mechanical Engineering and Civil Transport Engineering.
  • PhD in Structural Engineering, II cycle.
  • Winner of a NATO-CNR scholarship at the Department of Aeronautics of the Imperial College, Supervisor prof. Mike Criesfield.
  • Full Professor of Mechanics of Solids and Structures - Scienza delle Costruzioni at the University of Naples Federico II since 1 November 2001.
  • Member of the National Secretariat of the SSD ICAR / 08 - Scienza delle Costruzioni, 2004-2010.
  • Coordinator from 2012 to 2018 of the PhD in Structural, Geotechnical Engineering and Seismic Risk of the University of Naples Federico II.
  • Coordinator of Area 08 of the National University Council (CUN), from 2015 to 2020.
  • President of Società Italiana di Scienza delle Costruzioni (SISCo) since February 2021
  • Director of the Interdepartmental Center for Cultural Heritage (CIBeC) since March 2021
  • Author of over one hundred scientific papers published in national and international journals and conference proceedings.

 

Registration

Participation is free but to register it is necessary to fill the google form:

https://docs.google.com/forms/d/e/1FAIpQLSdls27wS74CVETREJJMuWmUqJ_nGhjqY-me0MPv69IdqEQUww/viewform?usp=pp_url

If unable to participate in presence, you can attend remotely by connecting to the webex link:

https://unifirenze.webex.com/unifirenze/j.php?MTID=ma4430153cdfd30570bc6381183f3e0dd

Meeting Number: 2743 668 7777 - Password: 6aFybEGjC48
Access through video call 27436687777@unifirenze.webex.com
You can also call 62.109.219.4 and insert the number of the meeting
Access through phone +39-069-974-8087 Italy Toll 390230410440 Italy Toll 2
Access Code: 274 366 87777


For Information: margherita.mellini(at)unifi.it

Ultimo aggiornamento

27.05.2022

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