Carmine Maria PAPPALARDO | VEHICLE DYNAMICS
Carmine Maria PAPPALARDO VEHICLE DYNAMICS
cod. 0622300052
VEHICLE DYNAMICS
0622300052 | |
DEPARTMENT OF INDUSTRIAL ENGINEERING | |
EQF7 | |
MECHANICAL ENGINEERING | |
2024/2025 |
YEAR OF COURSE 2 | |
YEAR OF DIDACTIC SYSTEM 2018 | |
SPRING SEMESTER |
SSD | CFU | HOURS | ACTIVITY | |
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ING-IND/13 | 6 | 60 | LESSONS |
Objectives | |
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KNOWLEDGE AND UNDERSTANDING: THE COURSE AIMS TO PROVIDE STUDENTS WITH TOOLS USEFUL FOR UNDERSTANDING THE OPERATION, PURPOSE, AND EXPECTED PERFORMANCE OF LAND VEHICLES, WITH PARTICULAR ATTENTION TO THE CATEGORY OF ROAD VEHICLES. TO THIS END, THE COURSE AIMS TO CRITICALLY TRANSFER STUDENTS FUNDAMENTAL ENGINEERING TOOLS IN THE FIELD OF VEHICLE DYNAMICS, ADDRESSED USING A SYSTEMATIC MULTIBODY APPROACH. THE FUNDAMENTAL ASPECTS OF THIS PROCESS ARE THE FOLLOWING: A) DERIVATION OF DYNAMIC MODELS OF MULTIBODY SYSTEMS, BOTH SIMPLIFIED AND COMPLEX, PAYING PARTICULAR ATTENTION TO THE MODELING OF THE MOTOR VEHICLE, BOTH SEEN AS A SIMPLIFIED SYSTEM IN ITS OWN RIGHT (VERTICAL DYNAMICS, LONGITUDINAL DYNAMICS, ETC. ), IS ANALYZED SEPARATELY IN ITS FUNDAMENTAL PARTS (TYPICAL DIAGRAMS FOR SUSPENSIONS, STEERING SYSTEM, ETC.); B) DEVELOPMENT IN A THREE-DIMENSIONAL COMPUTERIZED ENVIRONMENT OF MODELS OF CONSTRAINED MECHANICAL SYSTEMS SUITABLE FOR THE MODELING OF LAND VEHICLES; C) ELABORATION OF A MULTIBODY MODEL SUBJECTED TO SUITABLE FORCE FIELDS FOR THE MODELING OF BOTH THE TIRE-ROAD INTERACTION AND THE VEHICLE AERODYNAMICS; D) DESIGN OF CONTROL LAWS, HAVING DIFFERENT DEGREES OF COMPLEXITY, AND THEIR IMPLEMENTATION IN A SIMULATED ENVIRONMENT FOR THE TESTING OF VIRTUAL PROTOTYPES OF AUTONOMOUS VEHICLES; E) OUTLINE OF THE DYNAMICS OF TWO-WHEELED VEHICLES, ELEMENTS OF TERRAMECHANICS, BASICS OF FINITE ELEMENT FORMULATION. STUDENTS ARE ALSO PROVIDED WITH THE KNOWLEDGE RELATING TO THE METHODS AND ASSEMBLY DIAGRAMS OF TYPICAL VEHICLE SUSPENSION SYSTEMS, TO THE BASIC MODELING OF BOTH THE TIRE-ROAD CONTACT AND OF THE VEHICLE AERODYNAMICS, TO THE MODELING OF LAND VEHICLES IN AN INTEGRATED CAD- MBD OF COMPLEX ASSEMBLIES TO IMPLEMENT, ON THEM, THE LAWS OF DYNAMICS AND CONTROL OF ARTICULATED MECHANICAL SYSTEMS. ABILITY TO APPLY KNOWLEDGE AND UNDERSTANDING: THE EXAMPLES PROPOSED IN THE COURSE, THE EXERCISES ASSIGNED AS HOMEWORK, AND THE APPLICATION EXERCISES OFFER REPEATED IDEAS FOR THE APPLICATION OF THE METHODOLOGIES LEARNED IN THE FRONTAL LESSONS. AT THE END OF THE COURSE, STUDENTS WILL BE ABLE TO DESIGN SIMPLE PROTOTYPES OF LAND VEHICLES, TO ANALYZE THEIR DYNAMICS, TO MODEL THEIR PARTS WITH CAD, TO INTERFACE CAD MODELS WITH MBD TOOLS FOR THE AUTOMATIC ACQUISITION OF GEOMETRIC AND INERTIAL CHARACTERISTICS, AND TO CARRY OUT THE COMPUTER SIMULATION OF THE DYNAMICS AND CONTROL OF THE ARTICULATED MECHANICAL SYSTEMS OF INTEREST. MAKING JUDGEMENTS: THE COURSE IS AIMED AT STIMULATING AUTONOMOUS JUDGMENT SKILLS REGARDING THE COMPARISON BETWEEN ENGINEERING SOLUTIONS BOTH IN THE CONTEXT OF FUNCTIONAL DESIGN AND IN THE CONTEXT OF THE SUBSEQUENT GEOMETRIC AND DYNAMIC COMPUTER MODELING OF UNCONVENTIONAL SOLUTIONS FOR TYPICAL MECHANICAL PROBLEMS OF THE MACHINES. COMMUNICATION SKILLS: STUDENTS ARE REQUIRED TO PRESENT AND DISCUSS THEIR OWN SOLUTION TO THE PROBLEM PROPOSED AS THE TOPIC OF THE FINAL THESIS FOR THE CURRENT YEAR, AS WELL AS TO DEFINE DURING THE ORAL EXAM THE THEORETICAL METHODOLOGIES USED TO SOLVE THE THEMATIC PROBLEM, BOTH AT THE LEVEL OF THE MODEL OF THE DYNAMIC SYSTEM UNDER EXAMINATION, FROM AN INTEGRATED CAD-MBD POINT OF VIEW, AND IN ITS SUBSEQUENT IMPLEMENTATION ON THE COMPUTER. LEARNING SKILLS: BEING ABLE TO APPLY AND UPDATE THE KNOWLEDGE ACQUIRED IN DIFFERENT CONTEXTS FROM THOSE PRESENTED DURING THE COURSE, CONSIDERING TECHNOLOGICAL ADVANCES. ABILITY TO USE OTHER CAD/MBS MODELING TOOLS ONCE THE OPERATING LOGICS HAVE BEEN ACQUIRED. |
Prerequisites | |
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BASIC KNOWLEDGE OF THE FOLLOWING SUBJECTS IS REQUIRED FOR THE SUCCESSFUL ACHIEVEMENT OF THE TRAINING OBJECTIVES: 1. MECHANICS APPLIED TO MACHINES. 2. MECHANICAL DRAWING. 3. FUNDAMENTALS OF COMPUTER SCIENCE AND PROGRAMMING. |
Contents | |
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THE DURATION OF THE COURSE IS 60 HOURS, OF WHICH 40 OF THEORY AND 20 OF PRACTICE. 1. INTRODUCTION TO VEHICLE DYNAMICS WITH MULTIBODY SYSTEMATIC APPROACH. (3 HOURS, 3 THEORY + 0 PRACTICE) 2. REVIEW OF LINEAR ALGEBRA. (3 HOURS, 3 THEORY + 0 PRACTICE) 3. KINEMATICS OF 2D AND 3D RIGID BODIES. (3 HOURS, 3 THEORY + 0 PRACTICE) 4. INTRODUCTION TO FINITE ELEMENTS, STATICS AND DYNAMICS OF 2D AND 3D RIGID BODIES. (3 HOURS, 3 THEORY + 0 PRACTICE) 5. MECHANICAL CONSTRAINTS. (3 HOURS, 3 THEORY + 0 PRACTICE) 6. DYNAMICS OF CONSTRAINED MECHANICAL SYSTEMS. (3 HOURS, 3 THEORY + 0 PRACTICE) 7. SIMPLIFIED DYNAMIC MODELS OF THE VEHICLE (7 HOURS, 4 THEORY + 3 EXERCISES) 8. KINEMATICS AND DYNAMICS OF SUSPENSIONS. (7 HOURS, 6 THEORY + 1 EXERCISE) 9. TIRE DYNAMICS. (7 HOURS, 6 THEORY + 1 EXERCISE) 10. ELEMENTS OF VEHICLE AERODYNAMICS. (3 HOURS, 0 THEORY + 3 PRACTICE) 11. STABILITY OF THE ASSEMBLED VEHICLE. (3 HOURS, 3 THEORY + 3 PRACTICE) 12. ELEMENTS OF LINEAR CONTROL THEORY AND PID CONTROLLERS. (3 HOURS, 3 THEORY + 0 PRACTICE) 13. ELEMENTS OF PROGRAMMING IN THE MATLAB ENVIRONMENT. (3 HOURS, 0 THEORY + 3 PRACTICE) 14. INTRODUCTION TO SIMSCAPE. (3 HOURS, 0 THEORY + 3 PRACTICE) 15. CONCEPTION AND DEVELOPMENT OF THE FINAL PAPER. (3 HOURS, 0 THEORY + 3 PRACTICE) |
Teaching Methods | |
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CLASSROOM AND/OR REMOTE LESSONS: LESSONS WILL BE HELD USING SLIDES AND/OR NOTES IN ITALIAN AND/OR ENGLISH. SOME LESSONS INVOLVE THE USE OF THE CALCULATOR AND AN INTEGRATED CAD-MBD SYSTEM. EXERCISES AND SIMULATIONS TO BE CARRIED OUT BOTH BY HAND AND ON THE COMPUTER: ABOUT 30% OF THE CLASSROOM TIME WILL BE DEVOTED TO EXERCISES AND TO THE SOLUTION OF PROBLEMS INHERENT IN THE FINAL WORK TO BE CARRIED OUT WITH THE USE OF A 3D MODELING CAD SYSTEM AND WITH A MBD TYPE DYNAMIC SIMULATION PROGRAM. LABORATORY EXERCISES WILL ALSO BE CARRIED OUT REGARDING THE ANALYSIS OF COMPLEX MECHANICAL SYSTEMS. |
Verification of learning | |
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THE EXAM INCLUDES THE DISCUSSION OF A FINAL PAPER IN PLACE OF THE WRITTEN TEST. IN ADDITION, THERE IS ALSO A COMPULSORY ORAL EXAM. ACCESS TO THE ORAL EXAM IS SUBJECT TO PASSING THE DISCUSSION OF THE FINAL THESIS, WHICH IS MANDATORY IN ORDER TO PASS THE EXAM. THE MINIMUM GRADE (18/30) IS ACHIEVED BY DEMONSTRATING ADEQUATE KNOWLEDGE OF ALL THE THEORETICAL ASPECTS OF THE SUBJECT AND BY DEVELOPING AT LEAST ONE COMPLETE SUB-PROBLEM CONCERNING THE FINAL THESIS. THE MAXIMUM MARK (30/30) IS ATTRIBUTED TO THE STUDENT WHO DEMONSTRATES AN EXCELLENT KNOWLEDGE OF ALL ASPECTS OF THE SUBJECT, BOTH DURING THE DISCUSSION OF THE FINAL THESIS AND DURING THE ORAL EXAM. THE HONORS ARE ATTRIBUTED TO THE CANDIDATE WITH A COMPLETE AND SIGNIFICANT MASTERY OF THE THEORETICAL AND APPLICATIVE CONTENTS OF THE COURSE, AS WELL AS HIGH PROFICIENCY IN THE LANGUAGE, SYNTHESIS ABILITY, AUTONOMOUS PROCESSING ABILITY, AND ABILITY TO EXTEND IT TO INDUSTRIAL FIELDS OTHER THAN THOSE TAKEN INTO CONSIDERATION DURING THE COURSE. STUDENTS WILL HAVE TO DEVELOP SOME HOMEWORK, WHICH WILL BE EVALUATED AND WILL INFLUENCE THE FINAL SCORE. THE FINAL ASSESSMENT OF THE ACHIEVEMENT OF THE SET OBJECTIVES TAKES PLACE THROUGH TWO CONSECUTIVE STEPS, I.E. THE PRELIMINARY DISCUSSION OF AN ALL-INCLUSIVE THESIS ASSIGNED AT THE BEGINNING OF THE COURSE AND A SUBSEQUENT ORAL EXAM SPECIFICALLY DEDICATED TO THE DISCUSSION OF THE THEORETICAL PART OF THE COURSE. THE FINAL PAPER IS POSITIVELY EVALUATED BASED ON THE FOLLOWING ASPECTS: THE METHODOLOGICAL RIGOR IN DEFINING THE PROBLEM IN TERMS OF THE MODEL OF THE DYNAMIC SYSTEM UNDER EXAMINATION; THE COMPLETENESS AND CORRECTNESS OF THE MECHANICAL SOLUTIONS INTEGRATED IN A CAD-MBD MODEL; THE EFFECTIVENESS AND EFFICIENCY OF ANY CONTROL ALGORITHM IMPLEMENTED IN THE MODEL OF THE SYSTEM OF INTEREST, AS WELL AS THE PARTICULAR DESIGN SOLUTION CHOSEN FOR THE SOLUTION OF THE ASSIGNED PROBLEM. |
Texts | |
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HANDOUTS: 1. COURSE NOTES ACCESSIBLE ONLINE USING THE COURSE CLASS CREATED BY THE LECTURER ON MICROSOFT TEAMS. 2. DIDACTIC MATERIAL PROVIDED IN THE CLASSROOM DURING THE LESSONS BY THE LECTURER. REFERENCE BOOKS: 1. SHABANA, A. A., 2020, DYNAMICS OF MULTIBODY SYSTEMS, FIFTH EDITION, CAMBRIDGE UNIVERSITY PRESS. 2. BLUNDELL, M., HARTY, D., 2004, MULTIBODY SYSTEMS APPROACH TO VEHICLE DYNAMICS, ELSEVIER. ADVANCED BOOKS: 1. GUIGGIANI, M., 2017, THE SCIENCE OF VEHICLE DYNAMICS: HANDLING, BRAKING, AND RIDE OF ROAD AND RACE CARS, SPRINGER, SECOND EDITION. 2. GENTA, G., GENTA, A., 2016, ROAD VEHICLE DYNAMICS: FUNDAMENTALS OF MODELING AND SIMULATION, WORLD SCIENTIFIC. 3. CHELI, F., DIANA, G., 2015, ADVANCED DYNAMICS OF MECHANICAL SYSTEMS, SPRINGER. 4. PACEJKA, H., 2005, TIRE AND VEHICLE DYNAMICS, ELSEVIER. 5. WONG, J. Y., 2009, TERRAMECHANICS AND OFF-ROAD VEHICLE ENGINEERING: TERRAIN BEHAVIOUR, OFF-ROAD VEHICLE PERFORMANCE AND DESIGN, BUTTERWORTH-HEINEMANN. 6. COSSALTER, V., 2006, MOTORCYCLE DYNAMICS, LULU. |
More Information | |
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THE COURSE IS TAUGHT IN ITALIAN. |
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