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Introduction to Theory of Machines and Mechanisms
Inés Peñuelas Sánchez
[email protected] Alberto Higuera Garrido
José Manuel Sierra Velasco
Dpto. de Construcción e Ingeniería de Fabricación
CHAPTER 1
Ingeniería Mecánica
Lesson 1:
1. Introduction
2. Requirements
3. Major topics in the course
4. Bibliography and references
5. Methodology
6. Evaluation
7. Rules of the course
CONTENTS 2
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1. Introduction
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INTRODUCTION
WHAT DO ENGINEERS DO?
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� “The scientist describes what is. The engineer creates what never was” (Theodore von Karman).
MathsPhysics
Basic Sciences
Mechanical EngineeringMaterial Science Engineering
Civil EngineeringOther Engineering
How the physical world works Application of
science to fill a human need
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Theory of Machines and Mechanisms
Requirements
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Machine Elements (4º)
Design of Mechanical Systems (4º)
Machine Design (3º)
Maintenance of Machines (4º)
Physics
Maths
And then?
INTRODUCTION
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2. Requirements
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REQUIREMENTS
WHAT DO YOU NEED TO KNOW?
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� It is recommended prior knowledge of the general laws of mechanics of rigid bodies and their subsequent application to solving engineering problems.
� It is highly desirable that students have passed the following subjects "Mechanics and Thermodynamics", "Linear Algebra" and "Calculus”.
� Students should have knowledge of:
� Elementary vector calculus. Differentiation and integration of vector fields.
� Elementary matrix calculus. Systems of linear equations and matrices.
� Kinematics and dynamics of the particle. Forces and Newton's laws. Work, energy and energy conservation.
� Kinematics and dynamics of rigid bodies. Center of mass. Inertias.
� Software management at user level.
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3. Major topics in the course
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MAYOR TOPICS
CONTENTS
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� Chapter 1. INTRODUCTION
� Lesson 1. Introduction to the subject.
� Lesson 2 Mechanisms and machines: basic concepts.
� Lesson 3. Motion in machinery. 2D Mechanisms.
� Chapter 2. KINEMATICS OF MACHINERY
� Lesson 4. Velocity analysis of mechanisms.
� Lesson 5. Acceleration analysis of mechanisms.
� Lesson 6. Instant centers of velocities.
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MAYOR TOPICS
CONTENTS
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� Chapter 3. POWER TRANSMISSION ELEMENTS. DRIVES
� Lesson 7. Introduction to rigid transmissions.
� Lesson 8. Design and analysis of cam and follower systems.
� Lesson 9. Spur gears: design and analysis.
� Lesson 10. Helical, worm and bevel gears: design and analysis.
� Lesson 11. Drive trains: design and analysis.
� Chapter 4. DYNAMICS OF MACHINERY
� Lesson 12. Introduction to dynamics.
� Lesson 13. Static force analysis
� Lesson 14. Dynamic force analysis.
� Lesson 15. Friction in machines.
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4. Bibliography and references
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MAIN BIBLIOGRAPHY
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� C. Wilson and J.P. Sadler, Kinematics and Dynamics of Machinery. Third Edition in S.I. Units. Ed. Pearson (Prentice Hall).
� D. Myszka, Machines & Mechanisms – Applied Kinematic Analysis. Fourth Edition. Ed. Pearson (Prentice Hall).
� R. Norton, Design of Machinery. Ed. Mc Graw-Hill.
BIBLIOGRAPHY AND REFERENCES
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ADITIONAL BIBLIOGRAPHY
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� A. Erdman, G. Sandor and K. Sridhar, Mechanism Design. Vol 1: Analysis and Synthesis. Ed. Prentice Hall.
� A. Hernández, M. Cadenas, R. Tucho, R. Vijande, Problemas resueltos de teoría de máquinas. Ed. Universidad de Oviedo.
� J.C. García y otros. Problemas resueltos de teoría de máquinas y mecanismos. Ed. Thomson.
� H. Mabie and C. Reinholtz, Mechanisms and Dynamics of Machinery. Ed. John Wiley and Sons.
� J.E. Shigley,Teoría de Máquinas y Mecanismos. Ed. Mc Graw Hill.
BIBLIOGRAPHY AND REFERENCESIn
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COMPLEMENTARY DOCUMENTATION AND RESOURCES
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� In the Virtual Campus the student will find:
� The notes of the subject.
� Outlines of laboratory practices.
� Wordings of problems to be solved in the classroom practices.
� Simulations and motion animations of some of the mechanisms studied in the course.
� Wording of model tests.
� Proposed and solved exercises.
BIBLIOGRAPHY AND REFERENCES
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5. Methodology
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CLASSROOM LEARNING
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� Lectures -Theoretical classes (T). 32h
� Classroom Practice (PA). 14h
� Laboratory Practice (PL). 7h
� Group Tutorials (TG). 2h
METHODOLOGY
DISTANCE LEARNING
� Self-study.
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CLASSROOM PRACTICES
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� Solving exercises is the main goal of classroom practices.
� Students should actively participate in the development of the practice.
� Some exercises (at least 2) will be evaluate without previous notification.
METHODOLOGY
GROUP TUTORIALS
� A 2 hour session will be held at the end of the semester.
� Students should express their doubts to the professor.
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LABORATORY PRACTICES (4)
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1) Observation of Mechanical Assemblies. 0.25 points
2) Introduction to Computer Aided Mechanical Simulation.
3) Computer Aided Mechanical and Dynamical Simulation of Mechanisms . 0.50 points
4) Rigid Drives 0.25 points
METHODOLOGY
Practice 1 will be held in
Laboratorio 5.B.10. Edificio Dptal. Oeste. Módulo 5.
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LABORATORY PRACTICE
19METHODOLOGY
� Previous preparation of practices is required.
� The attitude during practices shall be taken into account.
� Attending to the practice with the script is mandatory.
� No practice will be evaluated without attending to it.
� The practices undertaken with computer, will be sent via the uniovi e-mail to the professor during the last ten minutes of the practice.
� Those e-mails subsequently sent will not be accepted.
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6. Evaluation
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ORDINARY ASSESSMENT
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� 80% will correspond to the grade on the written examination.
It is necessary to obtain a final grade of 5 to pass the subject. However a minimum of 4 points is required on the written examination.
� 10% will correspond to the grade on the classroom practices.
� 10% will correspond to the grade on the laboratory practices.
EVALUATION
EXTRAORDINARY ASSESSMENT
� 100% will correspond to the grade on the written examination.
� It could be included questions dealing practical skills.
It is necessary to obtain a final grade of 5 to pass the subject.
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7. Rules of the course
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MUY IMPORTANTE
23RULES OF THE COURSE
� El examen final debe resultar legible, debe expresar las unidadescorrectas y debe recoger con claridad los pasos seguidos y elorigen de aquellos cálculos parciales que se empleen en suresolución.
� Con carácter general no se resolverán dudas por medio del correoelectrónico y el alumno deberá ser diligente y responsable en eluso de este medio de comunicación.
� Es obligación del alumno atender al correo electrónico universitarioy al campus virtual, entendiendo el alumno que ambos son canalesde comunicación válidos y suficientes.
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