jj513 engineering design

RESTRICTED JJ513 Engineering Drawing

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Version: 080510_1.1_Effective:1 December 2011 RESTRICTED

POLYTECHNICS MINISTRY OF HIGHER EDUCATION

DEPARTMENT OF MECHANICAL ENGINEERING

COURSE : JJ513 ENGINEERING DESIGN

INSTRUCTIONAL DURATION : 15 WEEKS

CREDIT(S) : 3

PRE REQUISITE(S) : NONE

SYNOPSIS

ENGINEERING DESIGN provides knowledge on basic engineering design. It

emphasizes mathematical analysis for simple component design in engineering

such as key, pin joint, bolt, nut and welding. It also provides knowledge on gear design

and selection of bearing.

COURSE LEARNING OUTCOMES (CLO)

Upon completion of this course, students should be able to:

1. explain the basic concept of design process of engineering product or

component. (C2)

2. design the simple engineering components using mathematical analysis

method according to safe load limitation.(C5)

3. relate the basic concept and principle to solve the problems in of engineering

design . (A4)


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SUMMARY (45 LECTURE : 00 PRACTICAL)

RTA 1.0 INTRODUCTION TO ENGINEERING DESIGN (06 : 00)

This topic introduces design in engineering, the process involved, ergonomic factors in design, selection of materials and the requirements of production specifications

2.0 STRESS ANALYSIS (12 : 00)

This topic explains the principles of stress, deformation analysis for several kinds of stresses such as direct stress, shear stress, torsional shear stress and formulate torque, power and rotational speed

3.0 DESIGN OF MECHANICAL JOINT (12 : 00)

This topic explains the design of key, pin joint and bolt and nut joint. It involves analysis on bolt and nut joint carrying a direct load or eccentric load. It also explains the design joints of welding.

4.0 GEAR (08 : 00)

This topic explains the kinematics of gears, features of different types of gears and gear trains.

5.0 BEARING (07 : 00)

This topic explains the types of bearing such as friction bearing, fluid coated bearing and rolling bearing. It also explains the method of selecting suitable bearing based on calculation of dynamic and life load ratio

TOTAL (45 : 00)

RTA Recommended Time Allocation


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SYLLABUS

1.0 INTRODUCTION TO ENGINEERING DESIGN

1.1 Understand the engineering design. 1.1.1 Define the meaning of design. 1.1.2 Describe the types of design.

1.2 Understand the designing process.

1.2.1 Explain the primary need. 1.2.2 Define the definition of problem. 1.2.3 Describe the analysis process. 1.2.4 Describe the synthesis process. 1.2.5 Explain the systematic process of comparison and evaluation.

1.3 Explain the design consideration. 1.3.1 Explain the economic and production factor. 1.3.2 Identify the codes and standard are using in design. 1.3.3 Explain the safety and product liability.

1.4 Explain the ergonomic factors inside design. 1.4.1 Define the ergonomic in relationship between human and

machine. 1.4.2 Explain the relationship of basic ergonomic between human and

machine in the display element. 1.4.3 Analyze ergonomic factors used on simple equipment, such

as micrometer, microscope etc.

1.5 Write the specification in design. 1.5.1 Explain the requirement of design specification. 1.5.2 Analyze the possible specification that can be found

inside general goods, sample pump equipment etc. 1.5.3 Write specification for certain design product.

1.6 Explain the importance of material selection in design. 1.6.1 List types of material. 1.6.2 Describe of the material properties. 1.6.3 Estimate the product cost base on bill of material.

2.0 STRESS ANALYSIS

2.1 Describe the direct stresses 2.1.1 Differentiate between direct tension and direct compression of

stresses. 2.1.2 Determine direct stress in the round bar.


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2.2 Explain the deformation under direct axial loading 2.2.1 Compute the strain due to a direct axial tensile load or due to

a direct axial compressive load.

2.3 Describe the shear stress 2.3.1 Determine direct shear stresses on a key. 2.3.2 Determine the torsional shear stress formula on a

shaft. 2.3.3 Formulate relationship among torque, power and rotational

speed.

3.0 DESIGN OF MECHANICAL JOINT

3.1 Understand the Key Design 3.1.1 Explain the purpose of the key. 3.1.2 Sketch and name various types of key such as parallel keys,

taper keys, gib-head keys, pin keys, woodruff keys, etc. 3.1.3 Apply mathematical analysis for rectangle and parallel

key based on sheer stress and compressed stress.

3.2 Understand the design of pin joint, bolt, and nut joint. 3.2.1 List the advantages and disadvantages using pin and bolt

and nut as the method of joining. 3.2.2 Analyze the factors of bolt and nut joint failures. 3.2.3 Analyze bolt and nut joints by shearing load. 3.2.4 Analyze bolt and nut joints shearing caused by eccentric load. 3.2.5 Calculate the bolt size and maximum load.

3.3 Understand the welded joints design 3.3.1 State the advantages and disadvantages of welded joints. 3.3.2 Sketch the basic symbol for welded joint. 3.3.3 Apply the mathematical analysis for welded joint. 3.3.4 Determine the weld throat and safe load. 3.3.5 Determine the welded joint size caused by eccentric load.

4.0 GEAR

4.1 Explain the kinematics of gears 4.1.1 Recognize the main features of spur gears, helical gears,

bevel gears and worm gears.

4.2 Understand the design of spur gear 4.2.1 List the types of gearing. 4.2.2 Explain the terms that commonly used in gears such as pitch

diameter, circular pitch, diametral pitch, module , addendum, dedendum, clearance, outside diameter, root diameter, whole depth, working depth, tooth thickness and centre distance.


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4.2.3 Compute the gear features. 4.2.4 Determine the interference mating spur gear teeth. 4.2.5 Determine the velocity ratio and gear trains.

5.0 BEARING

5.1 Explain the rolling contact bearings. 5.1.1 State the types of bearing.

5.2 Explain the design life bearing.

5.2.1 Explain the relationship between bearing load and life. 5.2.2 Recommend appropriate value for the design life bearings.

5.3 Explain the procedure of bearing selection.

5.3.1 Apply the manufacturers data to specify suitable bearings for a given application.


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ASSESSMENT The course is assessed through coursework. ASSESSMENT SPECIFICATION TABLE (AST)

CONTEXT

CLO ASSESSMENT METHODS FOR COURSEWORK

(CA)

CL

O 1

CL

O 2

CL

O 3

Test Quiz Discussion

Report Case Study

*(2) 30% *(2) 20% *(2) 20% *(1) 30%

Introduction to engineering design

Stress analysis

Design of mechanical joint

Gear

Bearing

Remark:

CLO1 : explain the basic concept of design process of engineering product or component.

CLO2 : design the simple engineering components using mathematical analysis method according to safe load limitation.

CLO3 : Relate the basic concept and principle to solve the problems in of engineering design .

*(x) refers to the quantity of assessment


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REFERENCES

Autodesk(2007), Autodesk Inventor Professional 2008, USA.

B.Hawkes, R.Abinett.(1984). The Engineering Design Process.England: Longman. Cheng, Ron K.C. (2010), Using Autodesk Inventor 6, Thompson Delmar Learning

Mohamad Kassim Abdul Jalil. (2000). Proses dan Kaedah Rekabentuk. Penerbit Universiti Teknologi Malaysia

Randy H. Shih (2010), An Introduction to Autodesk Inventor 2011 and Auto CAD 2011.

SDC Publications

Robert L.Mott. (2006). Machine Element in Mechanical Design (4th Edition). Singapore: Pearson Prentice Hall.

Shigley, J.E & Mischke, C.R. (2003). Mechanical Engineering Design (6th Metric Edition). New York: McGraw-Hill

Ullman, D.G. (2003). The Mechanical Design Process (3rd Ed). New York: McGraw-Hill.

Yousef Haik. (2003). Engineering Design Process. USA: Prentice Hall.


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MATRIX OF COURSE LEARNING OUTCOMES (CLO) VS PROGRAMME LEARNING OUTCOMES (PLO)

Course Learning Outcome (CLO)

Compliance to PLO

Delivery Assessment PLO 1 PLO 2 PLO 3 PLO 4 PLO 5 PLO 6 PLO 7 PLO 8 PLO 9

LO-1 LO-2 LO-3 LO-4 LO-5 LO-6 LO-7 LO-8 LO-9

1 Explain the basic concept of design process of engineering product or component

Interactive Lecture, Exercise and PBL

Quiz, assignment and Tests C4

2

design the simple engineering components using mathematical analysis method according to safe load limitation.

Case study & Test

C5

3

Relate the basic concept and principle to solve the problems in of engineering design

Case study

A4 A4

Total 2 1 2

Remark : LD1 Knowledge LD2 Practical Skills LD3 Communication Skills LD4 Critical Thinking and Problem Solving Skills LD5 Social Skills and Responsibilities LD6 Continuous Learning and Information Management Skills LD7 Management and Entrepreneurial Skills LD8 Professionalism, Ethics and Moral LD9 Leadership and Teamwork Skills


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DISTRIBUTION OF STUDENT LEARNING TIME ACCORDING TO COURSE LEARNING - TEACHING ACTIVITY

jj513 engineering design

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