- Docente: Dario Croccolo
- Credits: 6
- SSD: ING-IND/14
- Language: Italian
- Moduli: Dario Croccolo (Modulo 1) Stefano Fini (Modulo 2)
- Teaching Mode: Traditional lectures (Modulo 1) Traditional lectures (Modulo 2)
- Campus: Bologna
- Corso: Second cycle degree programme (LM) in Mechanical Engineering (cod. 5724)
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from Feb 21, 2025 to Jun 13, 2025
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from Feb 17, 2025 to Jun 09, 2025
Learning outcomes
The outcomes of the course are to provide the advanced knowledge, the methods and the tools useful for the correct organization of the mechanical design activities of new or revised products. At the end of the course the students will be able to evaluate the technical and economical impact of the decisions assumed during the designing phase and will be able to reproduce the representation of a complex mechanical system, to define the relationship between the elements, to calculate the constraints, to draw the load diagrams and to compute the maximum tensile state of the components. Furthermore, they will be able to select the most appropriate type of shaft‑hub mechanical connection.
Course contents
Introduction to product design: design set up, design develop and design manage.
The shaft‑hub couplings: drive fit, taper fit
Shape couplings
Tongue fit and spline hole/shaft
The pressure vessels
The gear design. The tooth stress: the bending and the pitting strength. The cylindrical gears straight-toothed and helical-toothed. The conical gears.
Pins and pegs
Springs and elastic elements
Readings/Bibliography
Texts references
Dario Croccolo, Nicolò Vincenzi - Lezioni di fondamenti e
tecnica della progettazione meccanica - Società Editrice
Esulapio - Bologna - 2011
Dario Croccolo, Massimiliano De Agostinis, Giorgio Olmi - Esercizi di Coportamento meccanico dei materiali ed Elementi delle macchine - Società Editrice Esulapio - Bologna - 2013
Dario Croccolo, Massimiliano De Agostinis, Giorgio Olmi - Esercizi di Costruzione di macchine e Tecnica delle costruzioni meccaniche - Società Editrice Esulapio - Bologna - 2013
Distributions and slides of the course
Recommended readings
Pahl G., Beitz W., Feldhusen J., Grote K.-H., [http://www.springer.com/it/book/9781846283185] - A Systematic Approach, 2007, Springer, ISBN 978-1-4471-6025-0
Ullman G.D.
“The Mechanical Design Process”
Mc Graw-Hill, 1992.
Ulrich Karl T., Eppinger D.
“Progettazione e sviluppo di prodotto”
Mc Graw-Hill, 2000.
R. Giovannozzi
“Costruzione di macchine” vol I e II
Patron, Bologna
Niemann/Winter
“Elementi di macchine” vol I, II, III
EST Springer–Verlag Berlin, Heidelberg, New York
RC. Juvinall, K.M. Mrshek
“Fondamenti della progettazione dei Componenti delle Macchine”
Ed. ETS, Pisa, 2002
Gevirtz C.,
“Developing new products with TQM”
McGraw-Hill, 1994
Teaching methods
The course includes theoretical lectures given with the aid of multimedia systems. The didactic material will be uploaded at the end of the course on the platform “AMSCampus”(http://campus.unibo.it/)
Assessment methods
The assessment of learning is performed through a written test and an oral test, both in presence.
The written test lasts three hours and consists of the solution of three numerical exercises, on the following topics.
- Resolution of a shaft-hub coupling.
- Selection and verification of a joint made by means ok elastic springs, pins of gears.
- Verification of a thin wall pressure vessel.
During the written test, any kind of books and tables can be consulted. You can use spreadsheets present on personal computers as long as you start from blank sheets. All the formulas, the steps for obtaining the results and the individual numerical results must, however, be reported in the examination files.
Each exercise is assigned the maximum score of 10 points out of 30.
The test is passed if the overall grade (given by the sum of the partial scores) is of at least 18/30.
The oral exam aims to verify the learning of the theoretical topics covered in class and must be carried out within the three sessions scheduled for the exam session in which the written exam was taken (summer or autumn period). Taking the first available oral exam is recommended in order to be able, if necessary, to repeat the written exam.
In accordance with Art. 16, paragraph 5 of the Didactic Regulations, the grade obtained in the written test can be refused only once.
Teaching tools
PC projector. PC. Overheadprojector. Blackboard.
Office hours
See the website of Dario Croccolo
See the website of Stefano Fini
SDGs


This teaching activity contributes to the achievement of the Sustainable Development Goals of the UN 2030 Agenda.