Unit MACHINE DESIGN
- Course
- Industrial engineering
- Study-unit Code
- GP004989
- Curriculum
- In all curricula
- CFU
- 9
- Course Regulation
- Coorte 2022
- Offered
- 2024/25
- Type of study-unit
- Obbligatorio (Required)
- Type of learning activities
- Attività formativa integrata
MACHINE DESIGN A
| Code | GP004995 |
|---|---|
| CFU | 5 |
| Teacher | Luca Landi |
| Teachers |
|
| Hours |
|
| Learning activities | Caratterizzante |
| Area | Ingegneria meccanica |
| Academic discipline | ING-IND/14 |
| Type of study-unit | Obbligatorio (Required) |
| Language of instruction | Italian |
| Contents | The course of "Machine Design" is proposed to apply the methods of structural design to machines and components. In this module some general issues relating to the strength of mechanical components under static and cyclic conditions will be studied. |
| Reference texts | R.C. Juvinall, K.M. Marshek, "Fondamenti della Progettazione dei componenti delle macchine", Edizioni ETS, Pisa 1993 |
| Educational objectives | The student must demonstrate that to have the knowledge necessary to develop the structural design of machines and their components, in relation to stresses and environmental operating situations. In particular, it will have to demonstrate knowledge and ability to apply mechanical strength evaluation techniques under static and cyclic stresses. In addition to the knowledge of the main types of machine elements, it will be necessary to demonstrate and know how to apply the calculation procedures of some of the major components of the machines and link elements. |
| Prerequisites | It is requested to pass the exam of "Scienza delle Costruzioni" |
| Teaching methods | Frontal Lessons |
| Other information | -- |
| Learning verification modality | Oral examination |
| Extended program | Introduction. Introduction to the concepts of probability and reliability. Definition of the safety factor. Materials. Characteristics and properties of metallic materials. Elements of static. Isostatic structures. Shear forces and torsional moments in beams. Curved beams. Instability. Hertzian contact. Static loading conditions. Stress concentration. Failure theories for ductile and brittle materials. Fatigue loading conditions. Fatigue behavior of materials. Modifying factors. High cycles fatigueand machine design. Cumulation of damage and load spectra. Hertzian fatigue. |
MACHINE DESIGN B
| Code | GP004996 |
|---|---|
| CFU | 4 |
| Teacher | Giulia Morettini |
| Teachers |
|
| Hours |
|
| Learning activities | Caratterizzante |
| Area | Ingegneria meccanica |
| Academic discipline | ING-IND/14 |
| Type of study-unit | Obbligatorio (Required) |
| Language of instruction | The course is conducted in Italian. |
| Contents | The course aims to provide students with fundamental knowledge for the analysis, design, and verification of major threaded mechanical connections, with particular focus on geometric, static, and fatigue aspects. It also covers the operating principles, selection, and design of plain and rolling bearings, along with the mounting techniques and classification of clinching and riveting. Welding is addressed with reference to types, classification, static design, and fatigue of welded joints. The course includes the study of connections with keys and splines, supported by practical exercises. Finally, it covers the operating principles and design of gears, from tooth geometry to fatigue verification methods, including stress analysis and material manufacturing techniques. |
| Reference texts | Juvinall, R. C., & Marshek, K. M. (2006). Fundamentals of Machine Component Design (4th ed.). Hoboken, NJ: John Wiley & Sons. |
| Educational objectives | The course aims to provide fundamental knowledge for the analysis, design, and verification of basic mechanical components and systems for motion transmission and structural connections. The objective is to develop the ability to interpret and solve design problems under static and cyclic loading conditions, considering material behavior, strength criteria, and relevant technical standards. At the end of the course, students will be able to apply mechanical design methods, select appropriate solutions based on functional requirements, critically assess system stresses, and choose standard components using technical catalogs. Transversal skills acquired include technical analysis, problem-solving in mechanical design, and the correct use of engineering tools to support design decisions. |
| Prerequisites | To successfully follow the course, students are expected to have a basic knowledge of the following topics: Continuum mechanics: fundamental concepts of stress and strain, elastic constitutive relations (Hooke’s law), uniaxial and biaxial stress states Structural analysis: analysis of stresses in components subjected to tension, compression, bending, and torsion; beam theory; stress analysis and stress diagrams for simple structures Engineering thermodynamics and heat transfer: basic concepts of heat transfer, friction, and tribology Mechanical manufacturing technologies: basic understanding of manufacturing and production processes (e.g., welding, bearings) Technical mechanical drawing: reading and interpreting mechanical drawings, standards for representation, dimensional and geometric tolerances |
| Teaching methods | The course is primarily delivered through lectures, aimed at presenting the theoretical foundations and design principles related to mechanical components. To support the theoretical content, applied examples and numerical exercises are introduced, focusing on design, verification, and selection criteria. The course also includes the analysis of practical case studies, such as the selection of components from industrial technical catalogs (e.g., bolts, bearings, joints), in order to familiarize students with real-world design practices and technical documentation. Demonstration sessions with physical mechanical components are planned during class to help students understand the geometry, construction solutions, and functional principles of the elements under study. Student-teacher interaction is encouraged through in-class discussions, guided problem-solving sessions, and in-depth analysis of specific technical topics, based on practical needs and questions that may arise during the course. |
| Other information | Additional information is available on the course’s Unistudium page. The instructor is available for consultations at the end of each lecture; meetings with the instructor in person or via the Microsoft Teams platform can also be scheduled at other times. |
| Learning verification modality | Learning will be assessed through a written test followed by an oral exam, both conducted within the same examination session and integrated with Module A of the course. The written test aims to evaluate the analytical and design skills acquired through numerical exercises. The oral exam focuses on deepening the theoretical understanding of the topics covered and assessing the student’s critical reasoning abilities. |
| Extended program | 1. Threaded Fasteners Thread geometry terminology and standardization Power screws force analysis Static stresses in threads Load distribution among threads Bolt preloading External forces on the joint sealing effect Static design Design exercises Fatigue in threaded connections Fatigue design Exercises 2. Bearings 2.1 Sliding Bearings Introduction Types and materials Tribology basics friction and wear Design of plain bearings bushings 2.2 Rolling Bearings Introduction Materials and manufacturing methods Selection and design from catalogs Exercises 3. Riveted and Pinned Joints Introduction to riveted joints Rivets types classification and assembly Pins types classification and assembly Design of joints Exercises 4. Welded Joints Introduction and general classification Butt welds full penetration Fillet welds in T joints Static design of welded joints Fatigue in welded joints Fatigue design 5. Keys and Keyed Connections Introduction and overview Keys Design principles Exercises Keyways Design principles Exercises 6. Gears 6.1 Introduction and Types General operation Friction wheels Pin wheels and toothed gears Spur gears geometry and terminology Gear meshing laws Rack and pinion principles Materials and manufacturing techniques 6.2 Gear Design Tooth sizing Critical point analysis Lewis method AGMA method Contact stress between teeth Hertzian contact method Fatigue verification |
| Obiettivi Agenda 2030 per lo sviluppo sostenibile | Goal 4: Quality education Goal 9: Industry, innovation and infrastructure |