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Seminar Report on

TWEEL

Submitted by

2K9255 SREEJITH P S

under the guidance of

Asst Prof. MADHU V V

DEPARTMENT OF MECHANICAL ENGINEERING

GOVT COLLEGE OF ENGINEERING KANNUR- 670563

APRIL 2013

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DEPARTMENT OF MECHANICAL ENGINEERING

GOVERNMENT COLLEGE OF ENGINEERING KANNUR- 670563

CERTIFICATE

05/04/2013

This is to certify that the Seminar Report entitled TWEEL is a

bonafide work submitted by SREEJITH P S of 8th

semester Mechanical

Engineering in partial fulfillment of requirement for the award of the degree

of Bachelor of Technology in Mechanical Engineering from Kannur

University.

Signature Signature

Asst Prof.MADHU V V Prof. T D JOHN

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ACKNOWLEDGEMENT

It is our privilege to express our sincere gratitude to and deep indebtedness to the people

who helped me to complete the seminar successfully.

All glory and honors to God Almighty, who showered his grace upon me to make this

endeavor a success.

I am deeply grateful to Dr. K. C. Raveendranathan, Principal of Govt. College of

Engineering, Kannur for providing me the opportunity to complete my seminar.

I express my gratitude to Dr. T D John , Head of Department of Mechanical Engineering,

Government college of Engineering, Kannur for his valuable suggestions, advice and

encouragement throughout this seminar.

We are extremely grateful to Mr. Madhu V V, Assistant professor of Department of

Mechanical Engineering, Government College of Engineering, Kannur for the extensive

help and guidance for the completion of the seminar.

I also wish to express my gratitude to all our teaching and non-teaching staff of

Mechanical Engineering Kannur for their valuable support and help. I also thank my

parents and friends for their support and valuable suggestions.

Lastly, I express my sincere thanks to all those who directly or indirectly have supported

me in all the stages for the completion of my seminar.

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CONTENTSTitle Page i

Certificate ii

Acknowledgement iii

Abstract iv

Contents v

List of Figures vi

Chapter 1 INTRODUCTION 1

1.1 PNEUMATIC TIRES 1

1.2 DRAWBACKS OF PNEUMATIC TIRES 2

1.3 WHY REINVENT THE WHEEL? 2

Chapter 2 TIRE + WHEEL 4

Chapter 3 PARTS OF TWEEL 5

3.1 TREAD 6

3.1.1 TREAD PATTERN 7

3.2 DEFORMBLE WHEEL 9

3.2.1 VARIOUS HUB DESIGNS 9

3.3 FLEXIBLE SPOKES AND SHEAR BAND 10

Chapter 4 POLYURETHANE POLYMER 11

4.1 POLYURETHANE STRUCTURE 11

4.2 MANUFACTURING 15

4.2.1 DISPENSING EQUIPMENT 15

Chapter 5 ADVANTAGES 17

Chapter6 DISADVANTAGES 19

Chapter7 APPLICATIONS 20

Chapter8 CONCLUSION 23

REFERENCES 24

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LIST OF FIGURES

FIGURE NAME PAGE NO:

Fig.1.1 Tweel 3

Fig.3.1 Part of Tweel 5

Fig.3.2 Tire Tread 6

Fig.3.3 Tread Pattern 8

Fig.3.4 Deformable Wheel 9

Fig.3.5 Hub Design 10

Fig.4.1 Polyurethane Synthesis 12

Fig.4.2 Polymerization 14

Fig.4.3 Manufacturing Equipments 16

Fig.5.1 Tweel Advantage 17

Fig.7.1 iBOLTs and Segways 20

Fig.7.2 NASAs Lunar Rover and in Audi A4 21

Fig.7.3 Constructional and Military Application 22