The course aims at providing further knowledge to what was learned in the base courses of mechanical and automotive design. In particular, the course provides the fundamentals of machine component design and analysis, with selected reference to machine components used in vehicles and to their integration into complex systems. of One of the course objectives is the application of previously acquired knowledge on the strength of materials under static, dynamic, thermal and fatigue loads to the design of the machine components.

Students are expected to acquire the knowledge related to the methodologies for the design of some of the most relevant machine components and of mechanical systems, with particular reference to the automotive engineering, taking into account the different types of applied loads (mission) and their interaction with other parts of the same machine (system).

Engineering drawing, Fundamentals of strength of materials, Applied mechanics, Science and technology of materials or Technology of metallic materials.

Strength of materials: ? Recall of the calculation of equivalent stress and possible failure modes ? Recall of fatigue strength of materials; factors influencing the fatigue life, fatigue characteristic data and standard diagrams; stress concentration due to notches; load time histories, damage and damage accumulation. ? Hertz theory for the calculation of the contact pressure, strength of materials to contact loads and wear problems Mechanical joints: ? Threaded joints, axial load and tightening torque, static and fatigue design. ? Welded joints: weld types made by arc welding, static and fatigue verification according to the normative, typical defects and evaluation of the weld class. Machine elements and their design: - Roller bearings: selection in the catalog, equivalent load, life estimation, lubrication, assembly and site preparation; ? Mechanical springs: Torsion bars, cylindrical helical springs, lamina spring and leaf springs, conical disc springs; ? Notes on friction clutches; ? Transmission joints: articulated, universal and homokinetic joints; ? Cylindrical spur gears, tooth involute profile, modular geometry, length of the contact path, transmission ratio, specific sliding coefficients, gear tooth bending and surface fatigue failure, criteria for the selection of the module.

The course is organized in theoretical lectures and classroom practices/tutorials. During the tutorials in the classroom, the students will develop exercises on the topics covered during lectures. Students will also be asked to develop small projects related to motor vehicle components and subsystems, applying in a comprehensive/integrated way some of the methods for design and verification explained during the course.

Slides and notes will be made available to students Even if there is not a textbook covering all the subjects developed during the course, the following books are recommended as useful readings: - A.R. Juvinall, K.M. Marshek - "Fundamentals of machine component design", Wiley - M. Rossetto - "Introduzione alla fatica", ed. Levrotto & Bella, Torino - J. Bannantine ? ?Fundamentals of metal fatigue analysis?, Prentice Hall 1990 Further reference books - R. Giovannozzi - "Costruzione di Macchine", ed. Patron, Bologna - J.A. Collins - "Failure of materials in mechanical design", ed. Wiley, New York - Wahl - "Mechanical springs"

Modalità di esame: Prova scritta (in aula); Prova orale facoltativa;

Exam: Written test; Optional oral exam;

... The final exam evaluates the level of competence acquired in machine design, in terms of skill in solving design problems and knowledge of the relevant phenomena and methods. It consists of a compulsory written part and an elective oral part. The written part foresees the solution of a problem on the design and verification of automotive components. The involved problem size and difficulty are of the same type of the those proposed in the tutorials. During the written exam the student may use for consultation purpose books, lecture slides and tutorial materials, as long as in hard-copy form (the use of electronic devices such as tablets or laptops is not admitted). The allowed time is 120 minutes. The evaluation of the written test is based on a 24-point scale, and represents the final grading of the exam if the oral part is not taken. To pass the written test, the student must obtain a sufficient evaluation for each main subject of the problem. In order to take the oral exam, the student is required to have passed the written test. The oral has the goal to assess the knowledge on machine design. The student is asked to answer the questions basing her/his reasoning on formulas, charts and diagrams. The ability to explain technical constructive solutions by means of handmade sketches is also of high importance. The final grading is expressed taking as starting point the result of the written test, from which the variation (increment or decrement) due to the oral exam is considered (max possible grading: 30 cum laude). The written and oral parts of the exam must be taken in the same session. Booking through the portal is mandatory.

Gli studenti e le studentesse con disabilità o con Disturbi Specifici di Apprendimento (DSA), oltre alla segnalazione tramite procedura informatizzata, sono invitati a comunicare anche direttamente al/la docente titolare dell'insegnamento, con un preavviso non inferiore ad una settimana dall'avvio della sessione d'esame, gli strumenti compensativi concordati con l'Unità Special Needs, al fine di permettere al/la docente la declinazione più idonea in riferimento alla specifica tipologia di esame.