Mechanization of production processes and packaging represents the key to increase productivity and reliability in food industry. Therefore, the design and modelling of mechanical systems represent a key piece of knowledge for food tech ecological transition. The objective of this course is: - to provide the students with the basic modeling techniques to describe the kinematics, statics, and dynamics of rigid bodies. - to provide the students with a basic knowledge on fluid automation technology, with reference to pneumatic and electro-pneumatic systems. The course, based on an inductive method of teaching, enables the student to properly address problems relevant to the automation of food processing and packaging with an eye to efficient resource use.

The course aims at developing the ability of the student to identify the functional problems relevant to rigid bodies mechanics and mechanical drives, to address and solve them with a scientifically correct approach. At the end of this course, the student will have the knowledge of: - the kinematic characteristics of a mechanical system - the dynamic characteristics of a mechanical system - the general layout of a mechanical power transmission system and of the main kind of components used in such a system - the operating principle of the devices used for transmitting motion - the operating principle of the main pneumatic and electro-pneumatic components and their application to automatic machines - programmable logic control (Grafcet, ladder) As a consequence, the student will be able to: - develop functional models of real planar mechanisms, to determine their kinematic characteristics by graphically solving vector equations (triangle of velocities, polygon of accelerations) - identify the free-body-diagram of a mechanical system or of its parts, to determine the static or dynamic balance condition as a function of the external loading - identify the main characteristics of a mechanical power transmission system, evaluating the force/torque exchange - design a basic pneumatic and electropneumatic circuit The capability to solve real problems is achieved by developing the capacity to apply theoretical models to practical applications. Thus, exercises and lab sessions propose simple but realistic problems whose objective is to lead the student to a full comprehension of the theoretical basis to use it in everyday professional life.

Prerequisite for attending the course is: Basics of Mathematical Analysis, Physics

The course covers the fundamentals of applied mechanics and fluid automation and consists in front lectures (21 h), applied classes (15 h) and lab experiences (12 h). • Kinematics of mechanical systems: planar kinematics of rigid bodies; constraints and degrees of freedom; position, velocity, and acceleration determination; outline of relative motion; examples of mechanisms in food automatic machines • Statics: forces and torques; free-body-diagram; examples • Dynamics of mechanical systems: - Newton’s laws of dynamics; examples - Work and energy, power, and efficiency • Friction: static and dynamic friction, rolling friction; examples • Overview of components for motion transmission: gears, belts. • Compressed air plant, air treatment. • Basic pneumatic components: structure, operation and consumption of pneumatic actuators and valves. • Digital techniques for pneumatic applications. Functional and operative diagrams (step-displacement, grafcet, …). Ladder diagram.

The course (6 credits: 21 lecture hours, 15 applied class hours, 12 lab experiences hours) is organized as follows: - 16,5 lecture hours to cover the fundamentals of applied mechanics + 9 applied class hours on the specific topics + 3 lab experience hours - 4,5 lecture hours to cover the fundamentals of fluid automation + 6 applied class hours on the specific topics + 9 lab experience hours Theoretical lectures are supported by examples and applications. During the applied class hours, the students are provided by materials and frames of solution. The teacher will assist students during both the applied class and lab experiences hours, supporting them in their learning progression and clarifying their doubts. Attendance to lectures, applied classes and lab experiences is strongly recommended, being vital to achieve the expected learning outcomes. The teacher is available to meet students for consultation; please contact her/him by e-mail.

Main study references: • Juvinall, R.C., Marshek, K.M., Fundamentals of machine component design, 5th Edition, Wiley, 2011 • Meriam, J. L., Kraige L. G., Engineering Mechanics Dynamics, 7th Edition, Wiley, 2013. • C. Ferraresi, T. Raparelli: "Meccanica applicata", 3a edizione, 2007, CLUT • Magnani P.L., Ruggieri G., Meccanismi per macchine automatiche, UTET • G. Belforte, Manuale di Pneumatica, III Edizione, Tecniche Nuove, Milano, 2019. • Peter Beater, Pneumatic drives – System design, Modelling and Control, Springer, Berlin, 2007

Slides;

Modalita di esame: Prova scritta (in aula);

Exam: Written test;

... Achieved learning outcomes will be assessed by means of a final written exam. This is based on an analytical assessment of student achievement of the “expected learning outcomes” described above. The final written exam (duration: 2,5 hours) consists of questions and exercises on the content of the course and is made up of two parts, each ranked from 0 to 30: one part concerns the fundamental of applied mechanics and the other one concerns the fluid automation. In each part, the students will be asked to solve: - one problem using calculations, so to assess their ability to choose the most suitable mathematical instrument - one more theoretical question. To pass the exam, students must achieve 18 out of 30 for every part. The final grade will be the average of the grades obtained in the two parts. Students that achieved 30 out 30 for both parts, will be evaluated by 30/30 cum laude. The exam is a closed book one. The calculator can be used. A few days after the written test, the exam results are available and the students are summoned for a review of the written output, during which examiners inform the student on grading criteria, and receive any student appeal supported by appropriate explanations. Further details on exam rules are given on the official course website.

Gli studenti e le studentesse con disabilita 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'Unita Special Needs, al fine di permettere al/la docente la declinazione piu idonea in riferimento alla specifica tipologia di esame.