Universidad de Jaén

Block I. Design of machine elements

 

1. Fundamentals of machine design

 

1.1. Introduction to design

1.1.1. Design in engineering

1.1.2. Stress, strength and safety factor considerations

1.1.3. Safety and reliability

1.1.4. Economic factors in design

1.1.5. Unit systems

1.2. Materials for machine construction

1.2.1. Mechanical properties of materials

1.2.2. Materials more commonly employed for machine construction

1.3. Stress and strain analysis

1.3.1. Stress and strain. Axial and multiaxial stress states. Hooke’s law

1.3.2. Stress transformation. Mohr’s circle.

1.3.3. Flexion and torsion

1.3.4. Stess in machine elements

1.3.5. Strain in machine elements

1.3.6. Elements under compression

 

2. Flexible mechanical elements

 

2.1. Introduction

2.2. Belts

2.3. V belts

2.4. Roller chains

2.5. Wire rope

2.6. Flexible shafts

 

3. Clutches, brakes and flywheels

 

3.1. Introduction

3.2. Static considerations

3.3. Internal expanding rim clutches and brakes

3.4. External contracting rim clutches and brakes

3.5. Band-type clutches and brakes

3.6. Disk clutches and brakes

3.7. Cone clutches and brakes

3.8. Flywheels

 

Block II. Vibration analysis

 

4. Free vibrations

 

4.1. Introduction

4.2. Basic concepts

4.3. Formulation of the equations of motion

4.4. Damping

4.5. Free vibrations of systems with one degree of freedom

4.6. Logarithmic decrement

4.7. Energy dissipated by damping

4.8. Structural damping

4.9. Dry or Coulomb damping

4.10. Torsional vibration

 

5. Forced periodic motion

 

5.1. Introduction

5.2. Forced vibrations

5.3. Analysis of curves LDF/Ï„

5.4. Vibrations caused by the motion of the base

5.5. Vibrations caused by unbalanced rotors

5.6. Transmissibility and vibration damping

5.7. Vibration measurement

5.8. Fourier series development

 

6. Transient vibration

 

6.1. Introduction

6.2. Answer to elemental functions

6.3. Force function combinations

6.4. Response to any function. The Duhamel integration

6.5. Analysis in responce frequency

 

7. Energetic methods

 

7.1. Introduction

7.2. Calculation of natural frequencies

7.3. The principle of virtual work. Generalised coordinates

7.4. The Lagrange equation

7.5. Mass effect of elastic member

7.6. Substitution of distributed masses by concentrated masses

 

8. Systems of two degrees of freedom

 

8.1. Introduction

8.2. Movement equations

8.3. Calculation of system matrix terms

8.4. Free vibrations of undamped systems

8.5. Coupling, coordinate change and normal corrdinates

8.6. Paddling

8.7. Free vibrations with damping

8.8. Forced vibrations

8.9. Dynamic absorber of vibrations

 

9. Systems of several degrees of freedom

 

9.1. Introduction

9.2. Formulation of the system

9.3. Uncoupling of the system of equations

9.4. system properties definition

9.5. Undamped free vibrations. Calculation of frequencies and modes.

9.6. Genral response of a system

 

Block III. Stress and strain experimental analysis

 

10. Experimental techniques for stress and strain analysis

 

10.1. Introduction

10.2. Methods for strain measurement

10.2.1. Strain gauges

10.2.2. Strain gauge circuit and instrumentation

10.2.3. Strain analysis methods

10.3. Optical techniques for stress analysis

10.3.1. Optics fundamentals

10.3.2. Photoelasticity

10.3.3. Thermoelasticity (TSA)

10.3.4. Interferometry and holography

10.3.5. Moiré and moiré interferometry

10.3.6. Digital image correlation (DIC)

 

11. Industrial applications of experimental techniques in machine elements

 

11.1. Introduction

11.2. Applications of photoelasticity

11.3. Applications of TSA

11.4. Applications of moiré

11.5. Applications of DIC

The subject will organized in the following activities:

- Regular lectures. During this part of the subject the basic concepts of the subject will be developed in the form of short presentations.

- Lab tutorials: Some of the concepts presented during regular lectures will demonstrated with the aid of lab experiments and practical cases.

- General tutorials: Short seminars to review some of the most relevant aspects during the subject.

- Seminars: Short lecture about a relevant topic directly linked with the contents of the subject.

Students with special educational needs should contact the Student Attention Service (Servicio de Atención y Ayudas al Estudiante) in order to receive the appropriate academic support

Test. To get 5 points over 10.                            80% of the final mark.

Practice. To get 5 points over 10.                         15% of the final mark.

Attendance.                                                          5% of the final mark.