This paper presents a backwards design method for mechanical conceptual design. The method involves starting with a very idealistic semiworking solution and then systematically solving the unworkable parts of the solution until a complete solution is found. The method can work in conjunction with other methods such as Theory of Inventive Problem Solving (TRIZ) or brainstorming. The method tries to exploit the principle that it is easier to critique and modify a design than it is to create a fully working solution in one go. The visual nature of the method means that it is suited to design problems where geometry is important such as mechanism design and machine design. Three case studies of conceptual design are presented. The case studies involve a novel clutch, a novel rotary damping mechanism and a novel worm gearbox. Each of these designs won at least one national design competition in the UK. A simple design experiment has been carried out which indicated that the backwards design method was at least as effective as the morphological chart method for a simple machine design exercise.

References

References
1.
Pahl
,
G.
,
Beitz
,
W.
, and
Feldhusen
,
J.
, 2007,
Engineering Design: A Systematic Approach
,
3rd ed.
,
K.-H.
Grote
, ed.,
Springer
,
New York
.
2.
Stone
,
R.
, and
Wood
,
K.
, 2000, “
Development of a Functional Basis for Design
,”
ASME J. Mech. Des.
122
(
4
), pp.
359
370
.
3.
Bohm
,
M.
,
Vucovich
,
J.
, and
Stone
,
R.
, 2008, “
Using a Design Repository to Drive Concept Innovation
,”
ASME J. Comput. Inf. Sci. Eng.
,
8
(
1
), p.
014502
.
4.
Cross
,
N.
, 2008,
Engineering Design Methods: Strategies for Product Design
,
4th ed.
,
Wiley
,
Chichester, UK
.
5.
Ullman
,
D. G.
, 2009,
The Mechanical Design Process
,
4th ed.
,
McGraw Hill
,
New York
.
6.
French
,
M.
, 1985,
Conceptual Design for Engineers
,
Design Council
,
London
.
7.
Shigley
,
J. E.
, and
Mischke
,
C. R.
, 2010,
Mechanical Engineering Design
,
8th ed.
,
McGraw-Hill
,
New York
.
8.
Pugh
,
S.
, 1991,
Total Design-Integrated Methods for Successful Product Engineering
,
Addison Wesley
,
Harlow, UK
.
9.
Ashok
,
K. G.
, 1997, “
Design, Analogy, and Creativity
,”
IEEE Expert: Intell. Syst. Their Appl.
,
12
(
3
), pp.
62
69
.
10.
Shai
,
O.
,
Reich
,
Y.
, and
Rubin
,
D.
, 2009, “
Creative Conceptual Design: Extending the Scope by Infused Design
,”
J. Comput.-Aided Des..
,
41
(
3
), pp.
117
135
.
11.
de Bono
,
E.
, 1992,
Serious Creativity: Using the Power of Lateral Thinking to Create New Ideas
,
HarperCollins Publishers, Inc.
,
New York
.
12.
Stone
,
R.
,
Tumer
,
I.
, and
Van Wie
,
M.
, 2004, “
The Function-Failure Design Method
,”
ASME J. Mech. Des.
,
127
(
3
), pp.
397
407
.
13.
Shah
,
J. J.
,
Vargas-Hernandez
,
N.
,
Summers
,
J. D.
, and
Kulkarni
,
S.
2001, “
Collaborative Sketching (C-Sketch)—An Idea Generation Technique for Engineering Design
,”
J. Creat. Behav.
,
35
(
3
), pp.
168
198
.
14.
Sheng
,
I. L. S.
, and
Kok-Soo
,
T.
, 2010, “
Eco-Efficient Product Design Using Theory of Inventive Problem Solving (TRIZ) Principles
,”
Am. J. Appl. Sci.
,
7
(
6
), pp.
852
858
.
15.
Bryant
,
C. R.
, Stone, R. B,
McAdams
,
D. A.
, Kurtoglu, T, and
Campbell
,
M. I.
, 2005, “
Concept Generation From the Functional Basis of Design, International Conference on Engineering Design
,”
International Conference on Engineering Design, ICED 05
, Melbourne, Aug. 15–18.
16.
Linsey
,
J. S.
,
Wood
,
K. L.
, and
Markman
,
A. B.
, 2008, “
Modality and Representation in Analogy
,”
Artif. Intell. Eng. Des. Anal. Manuf.
,
22
, pp.
85
100
.
17.
Chrysikou
,
E. G.
, and
Weisberg
,
R. W.
, 2005, “
Following the Wrong Footsteps: Fixation Effects of Pictorial Examples in a Design Problem Solving Task
,”
J. Exp. Psychol. Learn. Mem. Cogn.
,
31
(
5
), pp.
1134
1148
.
18.
Linsey
,
J.
,
Tseng
,
I.
,
Fu
,
K.
,
Cagan
,
J.
,
Wood
,
K.
, and
Schunn
,
C.
, 2010, “
A Study of Design Fixation, its Mitigation and Perception in Engineering Design Faculty
,”
ASME J. Mech. Des.
,
132
, p.
2041003
.
19.
Smith
,
S. M.
,
Ward
,
T. B.
, and
Schumacher
,
J. S.
, 1993, “
Constraining Effects of Examples in a Creative Generation Task
,”
Mem. Cognit.
,
21
(
6
), pp.
837
845
.
20.
Moss
,
J.
,
Kotovsky
,
K.
, and
Cagan
,
J.
, 2011, “
The Effect on Incidental Hints When Problems are Suspended Before During or After an Impasse
,”
J. Exp. Psychol. Learn. Mem. Cogn.
,
37
(
1
), pp.
140
148
.
21.
Wiggins
,
G.
, and
Mc Tighe
,
J.
, 2005,
Understanding by Design
(
Merrill Education/ASCD College Textbook Series
),
2nd ed.,
Pearson Education, Upper Sadler River
,
NJ, USA
.
22.
http://articles.directorym.net/Designing_Backward_for_Sustainability_Frederick_MD-r879197-Frederick_MD.html (accessed Dec. 1, 2010)
23.
French
,
M.
, 1994,
Invention and Evolution
,
Cambridge University Press
,
Cambridge, UK
.
24.
Bejan
,
A.
, and
Lorente
,
S.
, 2008,
Design With Constructal Theory
,
Wiley
,
Indianapolis, IN, USA
.
25.
Burgess
,
S. C.
, 2002, “
Reliability and Safety Strategies in Living Organisms: Potential for Biomimicking
,”
Proc. Inst. Mech. Eng., Part E: J. Process Mech. Eng.
,
216
(
1
), pp.
1
13
.
26.
Daniel
Sheu
,
D.
, and
Chen
,
D. R.
, 2004, “
Forward and Backward Design Analyses: An Integrated Approach
,”
Proceedings of the Fifth Asia Pacific Industrial Engineering and Management Systems Conference
.
27.
http://www.artist-biography.info/artist/leonardo_da_vinci/ (accessed Sep. 14, 2011)
28.
Thompson
,
G.
, and
Lordan
,
M.
, 1999, “
A Review of Creativity Principles Applied to Engineering Design
,”
Proc. Inst. Mech. Eng., Part E: J. Process Mech. Eng.
,
213
, pp.
17
31
.
29.
Ullman
,
D. G.
, 1990, “
The Importance of Drawing in the Mechanical Design Process
,”
Comput. Graphics
,
14
(
2
), pp.
263
274
.
30.
Christensen
,
B. T.
, and
Schunn
,
C. D.
, 2008, “
The Role and Impact of Mental Simulation in Design
,”
Appl. Cogn. Psychol.
,
22
, pp.
1
18
.
31.
Williams
,
P. Y.
, 1978, “
Split Nuts
,” U. S. Patent No. 4,083,288.
32.
Burgess
,
S. C.
, 1989, “
Development Studies of Novel One-Way Clutch Mechanism
,” Ph.D. thesis, Brunel University, Uxbridge, UK.
33.
Burgess
,
S. C.
, and
Karp
,
S.
, 1993, “
Expansible-Band Clutch
,” European Patent No. 0425522B1.
34.
Burgess
,
S. C.
,
Stolarski
,
T. A.
, and
Karp
,
S.
, 1992, “
Mathematical model of an Overrunning Mechanism in a New One-Way Clutch
,”
Eng. Trans. (Pol. Acad. Sci.)
,
40
, pp.
49
62
.
35.
Burgess
,
S. C.
,
Stolarski
,
T. A.
, and
Karp
,
S.
, 1991, “
Analysis of Failure Modes of a Thermoplastic One-Way Clutch
,”
Proc. Inst. Mech. Eng., Part C: J. Mech. Eng. Sci.
,
205
, pp.
209
215
.
36.
Burgess
,
S. C.
, and
Khang
,
J.
1996, Rotary Damper. U.K. Patent No. 9518687.0.
37.
Burgess
,
S. C.
, and
Clarkson
,
P. J.
, 1997, “
The Development of a Novel Rotary Damping Mechanism for Aerospace Deployment Systems
,”
J.Mater. Des.
,
18
, pp.
17
24
.
38.
Burgess
,
S. C.
, 1992, “
Double-Action Worm Gear Set
,” European Patent No. 92302263.6.
39.
Burgess
,
S. C.
, 1992, “
A Study of the Efficiency of a Double-Action Worm Gear Set
,”
Proc. Inst. Mech. Eng., Part G: J. Aerosp. Eng.
,
206
, pp.
81
91
.
40.
Burgess
,
S. C.
, 1995, “
The Design of an Advanced Primary Deployment Mechanism for a Spacecraft Solar Array
,”
J. Eng. Design
,
6
(
4
), pp.
291
307
.
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