Universidad de Jaén

Part I

1. Introduction to Mechanical Engineering Design

1.1  Mechanical Engineering Design

1.2 Phases and Interactions of the Design Process

1.3 Design Tools and Resources

1.4 Safety and Product Liability

1.5 Stress and Strength

1.6 Uncertainty

1.7 Design Factor and Factor of Safety

1.8 Dimensions and Tolerances

1.9 Units

 

1. Materials

2.1 Material Strength and Stiffness

2.2 The Statistical Significance of Material Properties

2.3 Strength and Cold Work

2.4 Hardness

2.5 Impact Properties

2.6 Temperature Effects

2.7 Numbering Systems

2.8 Sand Casting

2.9 Shell Molding

2.10 Investment Casting

2.11 Powder-Metallurgy Process

2.12 Hot-Working Processes

2.13 Cold-Working Processes

2.14 The Heat Treatment of Steel

2.15 Alloy Steels

2.16 Corrosion-Resistant Steels

2.17 Casting Materials

2.18 Nonferrous Metals

2.19 Plastics

2.20 Composite Materials

2.21 Materials Selection

 

3. Stress and Strain analysis

 

3.1 Equilibrium and Free-Body Diagrams

3.2 Shear Force and Bending Moments in Beams

3.3 Singularity Functions

3.4 Stress

3.5 Cartesian Stress Components

3.6 Mohr’s Circle for Plane Stress

3.7 General Three-Dimensional Stress

3.8 Elastic Strain

3.9 Uniformly Distributed Stresses

3.10 Normal Stresses for Beams in Bending

3.11 Shear Stresses for Beams in Bending

3.12 Torsion

3.13 Stress Concentration

3.18 Curved Beams in Bending

3.19 Contact Stresses

3.20 Tension, Compression, and Torsion

3.21Deflection Due to Bending

3.22 Beam Deflection Methods

3.23 Beam Deflections by Superposition

3.24 Beam Deflections by Singularity Functions

3.25 Strain Energy

3.26 Castigliano’s Theorem

3.27Deflection of Curved Members

3.28 Statically Indeterminate Problems

3.29 Compression Members—General

3.30 Long Columns with Central Loading

3.31 Intermediate-Length Columns with Central Loading

3.32 Columns with Eccentric Loading

3.33 Struts or Short Compression Members

3.34 Elastic Stability

 

Part II

1. Static loading failure criteria

4.1 Static Strength

4.2 Stress Concentration

4.3 Failure Theories

4.4 Maximum-Shear-Stress Theory for Ductile Materials

4.5 Distortion-Energy Theory for Ductile Materials

4.6 Coulomb-Mohr Theory for Ductile Materials

4.7 Failure of Ductile Materials Summary

4.8 Maximum-Normal-Stress Theory for Brittle Materials

4.9 Modifications of the Mohr Theory for Brittle Materials

4.10 Failure of Brittle Materials Summary

4.11 Selection of Failure Criteria

4.12 Introduction to Fracture Mechanics

 

 

5. Fatigue analysis and failure criteria under variable loading

5.1 Introduction to Fatigue in Metals

5.2 Approach to Fatigue Failure in Analysis and Design

5.3 Fatigue-Life Methods

5.4 The Stress-Life Method

5.5 The Strain-Life Method

5.6 The Linear-Elastic Fracture Mechanics Method

5.7 The Endurance Limit

5.8 Fatigue Strength

5.9 Endurance Limit Modifying Factors

5.10 Stress Concentration and Notch Sensitivity

5.11 Characterizing Fluctuating Stresses

5.12 Fatigue Failure Criteria for Fluctuating Stress

5.13 Torsional Fatigue Strength under Fluctuating Stresses

5.14 Combinations of Loading Modes

5.15 Varying, Fluctuating Stresses; Cumulative Fatigue Damage

5.16 Surface Fatigue Strength

 

Part III

6. Shafts and Shaft Components

6.1 Introduction

6.2 Shaft Materials

6.3 Shaft Layout

6.4 Shaft Design for Stress

6.5 Deflection Considerations

6.6 Critical Speeds for Shafts

6.7 Miscellaneous Shaft Components

6.8 Limits and Fits

 

7.  Mechanical Springs

7.1 Stresses in Helical Springs

7.2 The Curvature Effect

7.3 Deflection of Helical Springs

7.4 Compression Springs

7.5 Stability

7.6 Spring Materials

7.7 Helical Compression Spring Design for Static Service

7.8 Critical Frequency of Helical Springs

7.9 Fatigue Loading of Helical Compression Springs

7.10 Helical Compression Spring Design for Fatigue Loading

7.11 Extension Springs

7.12 Helical Coil Torsion Springs

7.13 Belleville Springs

7.14 Miscellaneous Springs

 

8. Rolling−Contact Bearings

8.1 Bearing Types

8.2 Bearing Life

8.3 Bearing Load Life at Rated Reliability

8.4 Bearing Survival: Reliability versus Life

8.5 Relating Load, Life, and Reliability

8.6 Combined Radial and Thrust Loading

8.7 Variable Loading

8.8 Selection of Ball and Cylindrical Roller Bearings

8.9 Selection of Tapered Roller Bearings

8.10 Design Assessment for Selected Rolling-Contact Bearings

8.11 Lubrication

8.12 Mounting and Enclosure

 

9. Screws, Fasteners

9.1 Thread Standards and Definitions

9.2 The Mechanics of Power Screws

9.3 Threaded Fasteners

9.4 Joints—Fastener Stiffness

9.5 Joints—Member Stiffness

9.6 Bolt Strength

9.7 Tension Joints—The External Load

9.8 Relating Bolt Torque to Bolt Tension

9.9 Statically Loaded Tension Joint with Preload

9.10 Gasketed Joints

9.11 Fatigue Loading of Tension Joints

9.12 Bolted and Riveted Joints Loaded in Shear

 

10. Gears

10.1 Types of Gears

10.2 Nomenclature

10.3 Conjugate Action

10.4 Involute Properties

10.5 Fundamentals

10.6 Contact Ratio

10.7 Interference

10.8 The Forming of Gear Teeth

10.9 Straight Bevel Gears

10.10 Parallel Helical Gears

10.11 Worm Gears

10.12 Tooth Systems

10.13 Gear Trains

10.14 Force Analysis—Spur Gearing

10.15 Force Analysis—Bevel Gearing

10.16 Force Analysis—Helical Gearing

10.17 Force Analysis—Worm Gearing 

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 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

Assessment methodology:

Examination. Required 5 points over 10. 80% of the final mark.

Lab assignments. Required at least 3 points over 10 for each lab assignments. 15% of the final mark.

Attendance and partcipation. 5% of the final mark. 

Comepetences CEM2 and CT2 wil be evaluated in a final examination. CT4 will be evaluated through  lab assigments.