AIMS AND CONTENT

AIMS AND LEARNING OUTCOMES

The course aims at providing the knowledge of the basics of kinematics, statics and dynamics applied to the study of mechanical systems, and the most relevant aspects of the mechanics of machinery. The student will be able to discuss and analyse the functional, kinematic and dynamic features of transmissions and mechanical drives.

At the end of the course, the student will be able to:

• perform the kinematic and static analysis of articulated systems in mechanical and industrial applications
• perform the dynamic analysis by energetic approach of motor/transmission/load systems in transitory and steady state
• perform the synthesis od transmission systems in mechanical and industrial applications of the basis of the functional requirements

TEACHING METHODS

Theoretical and applicative lessons.

SYLLABUS/CONTENT

Introduction to mechanics of machinery.

Basics of vectorial calculus. Kinematics of the point, kinematics of the relative motions and of the rigid body.

Constraints, kinematic pairs, topology, typology and mobility of the kinematic chains.

Contact forces and friction between solids. Resistance between solids and fluids. Realization of the kinematic pairs.

Kinematics of the planar mechanisms: position and velocity models with analytical and geometrical approaches.

Statics of the rigid body. Statics of the planar mechanisms: constraints and reactive forces; determination of reactive and active forces/moments acting on a mechanism with analytical and geometrical approaches. Force transmission. Virtual work principle.

Fundamentals of dynamics: fundamental laws; Newtonian and energetic approach. Geometry of the masses and kinetic energy of a body. Kinetic energy of multibody systems. Principal types of active forces. Dynamics of mechanical systems with constant transmission ratio with one degree of freedom: power balance, efficiency and power flows; static characteristics; motor-load coupling; usage of mechanical transmissions; reduction to one free coordinate of forces, moments and inertias.

RECOMMENDED READING/BIBLIOGRAPHY

• Callegari Massimo, Fanghella Pietro, Pellicano Francesco, MECCANICA APPLICATA ALLE MACCHINE, Città Studi, 2013, ISBN 9788825173819
• Material on Aulaweb

TEACHERS AND EXAM BOARD

Exam Board

LUCA BRUZZONE (President)

PIETRO FANGHELLA

PAOLO SILVESTRI (President Substitute)

MATTEO VEROTTI (President Substitute)

LESSONS

LESSONS START

https://corsi.unige.it/8784/p/studenti-orario

Class schedule

L'orario di tutti gli insegnamenti è consultabile all'indirizzo EasyAcademy.

EXAMS

EXAM DESCRIPTION

Written exam with escercises and oral exam with discussion about the written exam and other questions.

ASSESSMENT METHODS

The written exam consists in exercises of analysis of the morphological and functional features of simple mechanical systems. Indicatively, the exam is composed of two exercises; the first is mainly focussed on kinematics and statics of a mechanism, the second on the dynamic analysis of a motor/transmission/load system. The correctness and the clarity of the calculus procedure is assessed.

In the oral exam, if necessary, the written exam is discussed; moreover, there are other theoretical questions about topics included in the program.

Exam schedule