True design with grammars lies in the creation of the grammar rules, not in the application of the rules to generate design alternatives. Existing grammars can be modified to describe new languages of designs [1–4]. Studying an epicyclic gear train graph grammar leads to purposeful relaxation of grammar rules and subsequent discovery of new designs. A revised new EGT grammar is presented, which is designed to generate a wider selection of valid EGTs.
Issue Section:
Technical Briefs
1.
Knight
, T. W.
, 1981
, “Languages of Design: From Know to New
,” Environment and Planning B: Planning and Design
, 8
, pp. 213
–238
.2.
Knight
, T. W.
, 1983
, “Transformations of Languages of Design: Part 2
,” Environment and Planning B: Planning and Design
, 10
, pp. 129
–154
.3.
Knight
, T. W.
, 1983
, “Transformations of Languages of Design: Part 1
,” Environment and Planning B: Planning and Design
, 10
, pp. 125
–128
.4.
Knight
, T. W.
, 1983
, “Transformations of Languages of Design: Part 3
,” Environment and Planning B: Planning and Design
, 10
, pp. 155
–177
.5.
Knight, T. W., 1998, “Designing a Shape Grammar: Problems of Predictability,” Artificial Intelligence in Design, Lisbon, Dordrecht, London, Kluwer Academic.
6.
Knight
, T. W.
, 1999
, “Shape Grammars: Six Types
,” Environment and Planning B: Planning and Design
, 26
(1
), pp. 15
–31
.7.
Knight
, T. W.
, 1999
, “Shape Grammars: Five Questions
,” Environment and Planning B: Planning and Design, 26. 8.
Li, X., and Schmidt, L., “Grammar-Based Designer Assistance Tool for Epicyclic Gear Trains,” ASME J. Mech. Des., in press.
9.
Li, X., He, W., Li, L., and Schmidt, L., “A New Cycloid Drive With High-Load Capacity and High Transmission Efficiency,” ASME J. Mech. Des., 126, pp. 683–686.
10.
Stiny
, G.
, 1980
, “Introduction to Shape and Shape Grammars
,” Environment and Planning B: Planning and Design
, 7
, pp. 343
–351
.11.
Shetty, H., 1998, “A Graph Grammar Approach to the Generation of Non-Isomorphic Graphs for the Structure Synthesis of Mechanisms,” Mechanical Engineering. University of Maryland, College Park.
12.
Schmidt
, L.
, Shetty
, H.
, and Chase
, S.
, 2000
, “A Graph Grammar Approach to Mechanism Synthesis
,” ASME J. Mech. Des.
, 122
(3
), pp. 371
–376
.13.
Tsai, L. W., 2000, Mechanism Design: Enumeration of Kinematic Structures According to Function, CRC Press, New York.
14.
Antonsson, E. K., and Cagan, J., eds., 2001, Formal Engineering Design Synthesis, Cambridge University Press.
15.
Starling, A. C., and Shea, K., 2002, “A Clock Grammar: The Use of A Parallel Grammar in Performance-Based Mechanical Synthesis,” CD-ROM ASME DETC2002 14th International Conference on Design Theory and Methodology, Montreal, QC.
16.
Chatterjee
, G.
, and Tsai
, L. W.
, 1996
, “Computer-Aided Sketching of Epicyclic-Type Automatic Transmission Gear Trains
,” ASME J. Mech. Des.
, 118
, pp. 405
–411
.Copyright © 2004
by ASME
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