Unit MECHANICS OF MACHINES
- Course
- Mechanical engineering
- Study-unit Code
- A005618
- Curriculum
- Progettazione meccanica
- Teacher
- Maria Cristina Valigi
- Teachers
-
- Maria Cristina Valigi
- Hours
- 108 ore - Maria Cristina Valigi
- CFU
- 12
- Course Regulation
- Coorte 2025
- Offered
- 2026/27
- Learning activities
- Caratterizzante
- Area
- Ingegneria meccanica
- Sector
- ING-IND/13
- Type of study-unit
- Obbligatorio (Required)
- Type of learning activities
- Attività formativa monodisciplinare
- Language of instruction
- Italian
- Contents
- • Kinematic pairs and mechanisms: graphical and analytical tools for kinematic and kinetostatic analysis. • Friction, wear. • Mechanical efficiency of machines and mechanisms. • Gears and transmission systems. • Vibrations with 1 dof • Free vibrations • Forced vibrations • Transmissibility • Suspension optimization • Reduction of vibrations generated by a vibrating ground • Vibration with 2dofs • Vibration with n dofs • Modal Analysis Classroom projects on open-chain and closed-chain mechanisms, gear reducers, suspensions, and lumped-parameter dynamic modeling of a mechanical/mechatronic system.
- Reference texts
- Callegari M., Fanghella P., Pellicano F., Meccanica applicata alle macchine, Ed. CittàStudi • Appunti delle lezioni • Funaioli E., Maggiore A., Meneghetti U., Lezioni di Meccanica applicata alle macchine. Prima parte: Fondamenti di Meccanica delle Macchine, ed. Patron, Bologna. • Papini S., Malvezzi M., Falomi S, Esercitazioni di meccanica applicata alle macchine: 1, Ed. Esculapio • Papini S., Malvezzi M., Valigi M.C., Esercitazioni di meccanica applicata alle macchine: 2, Ed. Esculapio
- Educational objectives
- Competences in the main methods for the functional analysis of machines and mechanisms, with particular regard to kinetostatic problems. Knowledge of the main motion transmission with particular reference to machines for the production of energy, mechanisms and systems, of friction and wear phenomena. Basic knowledge of dynamics and vibrations needed to describe the dynamic behavior of a mechanical system. Ability to study mechanical vibrations, the causes that determine vibrations and the effects caused by them. Modeling of machines for the production of energy. Definition of a machine and classification between operating and generating machines. Examples of machines for energy production
- Prerequisites
- Phisics- Theoretical Mechanics
- Teaching methods
- The course is organized in frontal theoretical lessons and exercises. + Classroom projects. (specific for mechanical design curriculum)
- Other information
- Attending students have the possibility of examination in itinere.
- Learning verification modality
- Written and oral test. Discussion of a report on the dynamic modeling and transmission design of a machine for energy production.
- Extended program
- Definition of a machine and classification between operating and generating machines. Examples of machines for energy production• Kinematic and kinetostatic analysis of mechanisms, kinetostatics of vehicles. • Mechanical efficiency of different machine configurations • Conjugate profiles and tracking methods. • Friction wheels • Spur gears with involute teeth: geometrical characteristics and dimensioning. Motion continuity and interference. Helical gears, bevel gears. • Ordinary and Epicyclic gearings. • Belt transmissions. • Oscillators • Single Degree of Freedom Systems • Free vibrations: 1 DoF • Motion of the mass: Anharmonic, damped harmonic, harmonic motion. Initial conditions • Forced vibrations: Force model. Transient and steady-state solution. Analytical solution. • Amplitude and phase with and without damping. Resonances. • Ground isolation:.Analytical solution Suspension optimization • Mass isolation:. Analytical solution Suspension optimization • Two Degrees of Freedom Systems. • . N Degrees of Freedom Systems.Definition of a machine and classification between operating and generating machines. Examples of machines for energy production
- Obiettivi Agenda 2030 per lo sviluppo sostenibile
- SDG3 - Good Health and Wellness - SDG4 - Quality Education - SDG9 - Industry, Innovation and Infrastructure - SDG12 - Responsible Consumption and Production - SDG3 - Good Health and Wellness - SDG4 - Quality Education - SDG9 - Industry, Innovation and Infrastructure - SDG12 - Responsible Consumption and Production - SDG3 - Good Health and Wellness - SDG4 - Quality Education - SDG9 - Industry, Innovation and Infrastructure - SDG12 - Responsible Consumption and Production - SDG3 - Good Health and Wellness - SDG4 - Quality Education - SDG9 - Industry, Innovation and Infrastructure - SDG12 - Responsible Consumption and Production