TEACHING GUIDE

Mechanical Systems

Degree inIndustrial Electronics and Automa on Engineering

Universidad de Alcalá

Academic Year 2020/2021

1st Year – 2nd Semester

Approved by the School Board on June 24, 2020

2

GUÍA DOCENTE Name of the subject: MECHANICAL SYSTEMS Code: 600006

Bachelor: Bachelor in Automation and Electronics Engineering

Department: Signal Theory and Communications. Type: COMPULSORY ECTS: 6 Course and Term: 1º Course – 2º Term

Teachers: Efrén Díez Jiménez (Coordinador) José Luis Pérez Díaz Ignacio Valiente Blanco

Office hours: Languages: English and Spanish

1. COURSE SUMMARY

Mechanism and machines form the core and power for industrialization and hence a basic area in industrial engineering. Current industrial production and automation would be impossible without machines. Therefore, an adequate engineering teaching must comprise, for whatever specialization, a solid comprehension of principles and basics of mechanical systems. Countless electronic applications are used for measuring, controlling and monitoring machines, mechanisms and mechanical parameters.

2. COMPETENCIES General competencies: This subject contributes to the acquisition of general competencies from section 3 of annex from Orden CIN/351/2009 TR2: Knowledge on basic and technological subjects, enabling the learning of new methods an theories, providing versatility and adaptation capacity to the students. TR3: Capacity of solving problems with own initiative, decision making, creativity, critical reasoning and capacity of transmission knowledge and skills in the industrial engineering field. TR4: Capacity for performing measurements, calculations, valuation, taxations, , studies, reports, working plans and other similar works. TR5: Capacity for working with specifications, regulations and standards. TR9: Capacity for working on a multilingual and multidisciplinary environment.

Approved by the School Board on June 24, 2020

3

Professional Competencies:

This subject contributes to the acquisition of general competencies from section 5 of annex from Orden CIN/351/2009: CI7-Knowledge of theory of machine and mechanisms basics.

Learning results:

• RASM7: To calculate kinetics and power relationships in a mechanism.

• RASM8: To distinguish among the different kinds of kinematic chains and to obtain by calculations the adequate transmission conditions.

• RASM9: To describe the different types of gear and to calculate their dimensional parameters.

• RASM10: To list the different types of speed reducers and to select the appropriate one depending on the power and speed conditions.

• RASM11: To describe the mechanical couplings as joining systems between shafts and axles. To distinguish the coupling according to their transmitted power and their capacity to compensate axles misalignments.

• RASM12: To explain the operation of a clutch, to know the different types and to calculate the forces that appear in their operations

• RASM13: To analyze the operation of a brake, to know the different types of brakes and to calculate the involved forces and the braking time.

• RASM14: To list the bearing applications, their types and to calculate the life

working hours.

• RASM15: To list the applications of a crank mechanisms and to understand and to calculate the forces that appears during operation.

• RASM16: To analyze cam mechanisms, the different types of cams and

followers and to design an Archimedes spiral cam.

• RASM17: To describe the operation of a kinematic chain consisting of different types of elements that transmit the motion from the motor to the final use connection.

• RASM18: To use with solvency the technical documentation that specialized

manufacturers of mechanisms provide for the calculation of their products.

Approved by the School Board on June 24, 2020

4

3. CONTENTS

Content topics Lesson hours.

• Introduction to mechanisms: clasification, uses and degrees of freedom. Kinematic pairs, tribology introduction and bearing design parameters.

• 6h

• ARTICULATED MECHANISMS: Four bars. Grashof condition and 6 bars mechanisms. Kinetics and dynamics analysis, synthesis and uses os mechanisms. Crankshaft mechanism. Kinetics and dynamics of rotational systems. Static and balancing of rotors. Design rules for bearings: types and selection.

• 34h

• MOTION TRANMISSION: • Gears: trains, planetary, differential, belts and chains. • Clutches, brakes, couplings • Cams

• 14h

Approved by the School Board on June 24, 2020

5

4. LEARING METHODS and ACTIVITIES

4.1. Credits distribution (hourly)

In-person class hours: 30 hours in large group. 24 hours in small group. 4 hours for exams.

Student homework hours: 92 hours (revision of theoretical concepts, activities executions, exercises solutions, etc…).

Total hours 150

4.2. Methodological Strategies, teaching resources

Teaching methods:

Lectures: - basic and general contents presentation. - multimedia resources. Deepening on the previous contents by studying and resolution of exercises and examples by the teachers. Student homework: Individually: - Research of bibliographical resources. - Study and resolution of practical cases. - Individual work for each content topic. In groups: - Study and resolution of practical cases. - Common presentation of the solutions. Tutorial: - Assistance to the students through individual or small groups (2-3 students) tutorial. Moreover, new computing and communication technologies will be used as support to the conventional teaching activities. Web site teaching material, internet information, online forum, webmail, etc…

Approved by the School Board on June 24, 2020

6

5. ASSESSMENT: Procedures and assessment criteria Mastering mechanical systems is associated with the capacity of analysis, synthesis and design those systems. The Procedures and assessment criteria are oriented to determine this skill in the student. Assessment criteria (CE) The next assessment criteria will be considered:

• CE1: The student i sable to analyze kinematic and dynamically a mechanical system. The student is able to calculate accurately the mechanical involved magnitudes.

• CE2: The student is able to design useful, efficient and practical mechanical systems.

Assessment Instruments

• Partial Exercise test 1 (PEP1). Practical and theoretical exercises resolution of part of the contents.

• Partial Exercise test 2 (PEP2). Practical and theoretical exercises resolution of part of the contents.

• Final examination (PEF). Practical and theoretical exercises resolution.

Assessment Criteria This section establish the criteria for passing the subject. ORDINARY CALL (Continuous evaluation) The relationships between criteria, learning results and grade for the ordinary call (continuous evaluation) is described in next table.

TABLE-1

Competency Learning Result

Assessment criteria

Assessment Instrument

Grade Weighting

TR2, TR3, TR4, TR5, TR9 y CI7

RASM7-18 CE1 CE2

PEP1 30% PEP2 30%

PEF 40%

The student not attending to PEF will be excluded from ordinary continuous evaluation call. A student must obtain more than 5 over 10 points in order to pass the subject.

Approved by the School Board on June 24, 2020

7

ORDINARY CALL (Final evaluation)

TABLE-1

Competency Learning Result

Assessment criteria

Assessment Instrument

Grade Weighting

TR2, TR3, TR4, TR5, TR9 y CI7

RASM7-18 CE1 CE2

PEF 100%

The student not attending to PEF will be excluded from ordinary call. A student must obtain more than 5 over 10 points in order to pass the subject. EXTRAORDINARY CALL (Both Continuous and final evaluation)

TABLE-3

Competency Learning Result

Assessment criteria

Assessment Instrument

Grade Weighting

TR2, TR3, TR4, TR5, TR9 y CI7

RASM7-18 CE1 CE2 PEF 100%

A student must obtain more than 5 over 10 points in order to pass the subject.

Approved by the School Board on June 24, 2020

8

.

6. BIBLIOGRAPHY

Basic • A.G. Erdman y G.N. Sandor. Diseño de mecanismos, análisis y síntesis. Prentice

Hall, 3ra Edición, 1998. • A. Bedford y W. Fowler. Mecánica para Ingeniería. (Estática y Dinámica).

Pearson Education 5ª 2008. • Beer-Johnston Mecánica vectorial para ingenieros, Mc. Graw-Hill. Complementary

• J. Agulló Batlle, Mecánica de la partícula y del Sólido Rígido, Publicaciones OK PUNT, Barcelona, 2000.

• Norton, Robert L. Diseño de maquinaria Síntesis y análisis de máquinas y mecanismos,. Editorial MacGraw-Hill, 2013.

• A. Simón, A. Bataller, A.J. Guerra, J.A. Cabrero. Fundamentos de Teoría de Máquinas. Ed. Bellisco, 3ª edición 2009.

• Joseph Edward Shigley y John Joseph Uicker. Teoría de máquinas y mecanismos. Jr. Editorial MacGraw-Hill

• G.Niemann. Elementos de máquinas. Volumen I ..Editorial Labor, S.A • Joseph Edward Shigley; Larry D. Mitchel. Editorial MacGraw-Hill. Quinta edición. • Machine Theory, J.L. Pérez Díaz et al , Diseño de ingeniería mecánica. OCW

uc3m, http://ocw.uc3m.es/ingenieria-mecanica/machine-theory

Approved by the School Board on June 24, 2020

Disclosure NoteThe University of Alcalá guarantees to its students that, if due to health requirements thecompetent authorities do not allow the total or partial attendance of the teachingactivities, the teaching plans will achieve their objectives through a teaching-learning andevaluation methodology in online format, which will return to the face-to-face mode assoon as these impediments cease.

9Approved by the School Board on June 24, 2020