Raffaele SEPE | MECHANICAL SYSTEMS DESIGN
Raffaele SEPE MECHANICAL SYSTEMS DESIGN
cod. 0612300012
MECHANICAL SYSTEMS DESIGN
| 0612300012 | |
| DIPARTIMENTO DI INGEGNERIA INDUSTRIALE | |
| EQF6 | |
| MECHANICAL ENGINEERING | |
| 2020/2021 |
| OBBLIGATORIO | |
| YEAR OF COURSE 3 | |
| YEAR OF DIDACTIC SYSTEM 2018 | |
| PRIMO SEMESTRE |
| SSD | CFU | HOURS | ACTIVITY | |
|---|---|---|---|---|
| ING-IND/14 | 12 | 120 | LESSONS |
| Objectives | |
|---|---|
| STUDENTS WILL LEARN HOW TO CRITICALLY ANALYSE THE STRUCTURAL RESISTENCE OF MACHINE COMPONENTS, UNDERGOING STATIC AND FATIGUE LOADS. IN PARTICULAR, THE STUDENT WILL LEARN HOW TO: - ANALYSE THE MECHANICAL BEHAVIOUR OF STRUCTURES UNDERGOING STATIC OR DYNAMIC LOADS; - CALCULATE STRESSES AND DISPLACEMENTS IN SIMPLE STRUCTURAL COMPONENTS (BEAMS, SHAFT, ETC.) AND POINT OUT THE CORRESPONDING SAFETY MARGIN; - ASSESS THE STRUCTURAL RESISTANCE OF MECHANICAL COMPONENTS UNDERGOING STATIC, THERMAL AND FATIGUE LOADS; - SIZE A MECHANICAL COMPONENT, CONSIDERED AS PART OF A COMPLEX ASSEMBLY, IN COMPLIANCE WITH DESIGN CONSTRAINTS AND TECHNICAL NORMS; - APPLY DIAGNOSIS TECHNIQUES FOR FAILURE MODE ASSESSMENT IN A MECHANICAL COMPONENT AND SCHEDULE THE NEEDED MAINTENANCE; - ANALYSE THE DAMAGING PHENOMENA UNDERMINING IN SERVICE FUNCTIONAL PERFORMANCES OF MATERIALS USED IN ENGINEERING APPLICATIONS, WITH ALLOWANCE FOR THEIR MUTUAL INTERDEPENDENCE, MICROSTRUCTURE AND APPLIED HEAT/MECHANICAL TREATMENTS. THE MAIN SKILLS DEVELOPED BY THE STUDENTS WILL BE DEPLOYED IN A GROUP WORK AIMED AT DESIGNING A COMPLEX MECHANICAL ASSEMBLY, WITH CONSIDERATION OF ALL THE PREVIOUSLY MENTIONED ASPECTS. |
| Prerequisites | |
|---|---|
| AS A PREREQUISITE TO PROPERLY BENEFIT OF THE COURSE CONTENT, STUDENTS MUST OVERCOME EXAMINATIONS IN THE FOLLOWING PROPEDEUTIC COURSES: -TECHNICAL DRAWING -RATIONAL MECHANICS AND STRUCTURAL MECHANICS -MANUFACTURING (THIS PREREQUISITE IS OPTIONAL) -MECHANICS OF MACHINES |
| Contents | |
|---|---|
| STRESS/STRAIN ASSESSMENT IN THREE-DIMENSIONAL CONFIGURATIONS OF BEAMS UNDERGOING STATIC LOADS. (10 H) • NOTCH EFFECT. (5 H) • STATIC FAILURE CRITERIA FOR BRITTLE AND DUCTILE MATERIALS, WITH ISOTROPIC CONSTITUTIVE LAW. (4 H) • FAILURE ASSESSMENT AND SIZING FOR STRUCTURAL COMPONENTS: DESIGN CRITERIA, SAFETY COEFFICIENTS, COMPLIANCE TO TECHNICAL NORMS. (2 H) • AXIAL-SYMMETRIC ELASTIC PROBLEMS: STRESS/STRAIN ASSESSMENT FOR PRESSURE VESSELS WITH THIN OR THICK WALLS. APPLICATION TO AN INDUSTRIAL VESSEL FOR GPL (10 H) • THERMO-ELASTICITY IN AXIAL-SYMMETRIC PROBLEMS: THERMAL STRESS/STRAINS IN PIPES AND FLEXIBLE JOINTS INSERTED AT SPECIFIC PIPE SECTIONS. (5 H) • UNIAXIAL AND MULTIAXIAL FATIGUE: EFFECT OF COMPONENT SIZE, SURFACE ROUGHNESS, NOTCHES; WHOLER CURVES. CRITERIA AND NORMS FOR FATIGUE FALILURE ASSESSMENT AND SIZING. (25 H) • FUNCTIONAL MODE, FAILURE ASSESSMENT AND SIZING OF: - NON REMOVABLE (RIVETING, WELDING, BONDING) AND REMOVABLE JOINT COMPONENTS (COMPONENTS FIT TOGETHER, FEATHER KEY, TABS, SPLINED SHAFT, BOLTS, MANOUVRE AND POWER SCREW); (15 H) - SHAFT AND AXLE (7 H) - BEARINGS (5 H) - SPRING (2H) - JOINTS (2 H) - GEARS (5 H) - BELTS (4 H) • UNIAXIAL LOW CYCLE FATIGUE (2 H) • UNIAXIAL CREEP (2 H) • THERMOMECHANICAL FATIGUE (2 H) • LINEAR ELASTIC FRACTURE MECHANICS (6 H) • PROJECT: ANALYSIS OF A MECHANICAL ASSEMBLY WITH APPROPRIATE CHOICE OF ITS MAIN COMPONENTS AND RELATED SIZING. (8 H) - VISIT TO THE LABORATORY OF THE MACHINE DESIGN GROUP (2 H) |
| Teaching Methods | |
|---|---|
| THE COURSE IS BASED ON 120 HOURS OF THEORETICAL AND APPLICATIVE LESSONS (12 CFU). IN PARTICULAR, 2 OUT OF 120 HOURS ARE SPENT IN THE LABORATORY OF THE MACHINE DESIGN GROUP WHERE THE AVAILABLE STATIC AND FATIGUE MACHINES WILL BE ILLUSTRATED TO THE STUDENTS; THE REMAINING 118 HOURS WILL BE EROGATED IN THE CLASS ROOM AND SPLIT IN 80 HOURS OF THEORY AND 38 OF APPLICATIONS (EXERCISES) |
| Verification of learning | |
|---|---|
| THE FULFILLMENT OF THE COURSE OBJECTIVES WILL BE ASSESSED BY A WRITTEN AND AN ORAL EXAMINATION, DEVELOPED IN DIFFERENT DATES. DURING THE ORAL EXAMINATION, IN ADDITION TO ANSWERING TO QUESTIONS CONCERNING THE TOPICS DEVELOPED DURING THE COURSE, THE STUDENTS WILL HAVE TO ILLUSTRATE A TECHNICAL PROJECT THEY HAD PREVIOUSLY DEVELOPED IN A TEAM, ON A TOPIC SUGGESTED BY THE TEACHER. |
| Texts | |
|---|---|
| MECCANICA DEI SOLIDI - AUTHORS: P. BEER, E. R. JOHNSTON JR., J.T. DEWOLF - PUBLISHER: MC-GRAW HILL COSTRUZIONE DI MACCHINE - AUTHORS: ANTONIO DE PAULIS ED ENRICO MANFREDI - PUBLISHER: PEARSON -COSTRUZIONE DI MACCHINE - AUTHORS: BELLONI-LO CONTE - PUBLISHER: HOEPLI MANUALE DEGLI ORGANI DELLE MACCHINE AUTHORS: G. NIEMANN, H. WINTER, B.R. HOHN. PUBLISHER: TECNICHE NUOVE NOTES: DIAGRAMS, TABLES, FORMULAE |
| More Information | |
|---|---|
| SUBJECT DELIVERED IN ITALIAN. |
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