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Toward an automated approach to the design of sheet metal components



The design of sheet metal components is perhaps one of the more challenging concurrent activities for design and manufacturing engineers. To aid this design process, a method is developed to encapsulate the constraints of sheet metal that make designing such components a tedious and iterative procedure. This project involves the implementation and testing of a geometric representation scheme for building feasible sheet metal components through the use of 17 grammar rules that capture manufacturing operations like cutting and bending. The implemented system has benefits both as a user interaction tool and as the basis for a computational design synthesis approach for designing sheet metal components. An example of a constructed sheet metal component is shown along with the method for invoking the sheet metal grammar to create this component.


Corresponding author

Reprint requests to: Matthew I. Campbell, Department of Mechanical Engineering, University of Texas at Austin, 1 University Station #C2200, Austin, TX 78712-0292. E-mail:


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Aberlanc, F., Babeau, J., & Jamet, P. (1996). OPTRIS: The complete simulation of sheet metal forming. Sheet Metal Stamping for Automotive Applications, SAE Int. Congress.
Boothroyd, G., Dewhurst, P., & Knight, W. (1994). Product Design for Manufacture and Assembly. New York: Marcel Dekker.
Bourne, D. & Fussel, P. (1982). Designing Programming Languages for Manufacturing Cells. Technical Report CMU-RI-TR-82-05. Pittsburgh, PA: Carnegie Mellon University, Robotics Institute.
Brown, K.N. & Cagan, J. (1997). Optimized process planning by generative simulated annealing. Artificial Intelligence in Engineering Design, Analysis and Manufacturing 11, 219235.
Cagan, J. (2001). Engineering shape grammars. In Formal Engineering Design Synthesis (Antonsson, E.K. & Cagan, J., Eds.). New York: Cambridge University Press.
Cagdas, G. (1996). A shape grammar: The language of traditional Turkish houses. Environment and Planning B: Planning and Design 23, 4.
Chappuis, L., Tang, S., Chen, X., & Wu, J. (1993). A numerically stable computer model for sheet metal forming analysis by 2D membrane theory. SAE International SP-944. Sheet Metal and Stamping Symp.
Chase, S.C. (1998). User interaction models for grammar based design systems. International Journal of Design Computing 1. Available on-line at
Cheng-Hua, W. & Bourne, D. (1995). Design and manufacturing of sheet metal parts: Using features to aid process planning and resolve manufacturability problems. In Computers in Engineering 1995 (Busnaina, A., Ed.), pp. 745753. New York: ASME.
Fu, Z., De Pennington, A., & Saia, A. (1993). A graph grammar approach to feature representation and transformation. International Journal of Computer Integrated Manufacturing 6(102), 137151.
Gupta, S., Bourne, D., Kim, K., & Krishnan, S. (1998). Automated process planning for sheet metal bending operations. Journal of Manufacturing Systems 5.
Hardt, D., Boyce, M., Ousterhout, K., Karafillis, A., & Eigen, G. (1993). A CAD-driven flexible forming system for three-dimensional sheet metal parts. SAE International SP-944. Sheet Metal and Stamping Symp.
Hishida, Y. & Wagoner, R. (1993). Experimental analysis of blank holding force control in sheet forming. SAE International SP-944. Sheet Metal and Stamping Symp.
Kalpakjian, S. (1992). Manufacturing Processes for Engineering Materials, 2nd ed. New York: Addison–Wesley.
Katayama, T., Yoshida T., Ohwue T., & Usuda, M. (1993). Predictive evaluation of sheet metal forming limit using 3-D FEM. SAE International SP-944. Sheet Metal and Stamping Symp.
Khaldi, F.E., Bernardi, R.D., & Ogura, O. (1996). Sheet metal forming: State of the art application methodology and simulation streamlining. Sheet Metal Stamping for Automotive Applications, SAE Int. Congress.
Klahr, D., Langley, P., Neches, & R., Eds. (1987). Production System Models of Learning and Development. Cambridge, MA: MIT Press.
Koning, H. & Eizenberg, J. (1981). The language of the prairie: Frank Lloyd Wrightís prairie houses. Environment and Planning B: Planning and Design 8, 295323.
Lascoe, O.D. (1988). Handbook of Fabrication Processes. Metals Park, OH: ASM International.
Li, X., Schmidt, L., He, W., Li, L., & Qian, Y. (2001). Transformation of an EGT grammar: New grammar, new designs. DETC2001/DTM-21716. Proc. ASME 2001 Design Eng. Tech. Conf., Pittsburgh, PA.
Lin, Z.C. & Hong, J.T. (1998). Sheet metal products: Database in support of their process planning and surface development. International Journal of Computer Integrated Manufacturing 11(6), 524533.
Lipson, H. & Shpitalni, M. (1997). On the topology of sheet metal parts. Transactions of the ASME Journal of Mechanical Design 120(1), 1016.
Longenecker, S.N. & Fitzhorn, P.A. (1991). A shape grammar for non-manifold modeling. Research in Engineering Design 2(3), 159170.
Mitchell, M. (1996). An Introduction to Genetic Algorithms. Cambridge, MA: MIT Press.
Pinilla, J.M., Finger, S., & Prinz, F.B. (1989). Shape feature description using an augmented topology graph grammar. Proc. NSF Eng. Design Res. Conf., pp. 285300. Amherst, MA, June 11–14, 1989.
Shpitalni, M. & Lipson, H. (2000). 3D conceptual design of sheet metal products by sketching. Journal of Materials Processing Technology 103(1), 128134.
Stiny, G. (1980). Introduction to shape and shape grammars. Environment and Planning B: Planning and Design 7, 343351.
Wang, C.H. & Sturges, R.H. (1996). BendCad: A design system for concurrent multiple representations of parts. Journal of Intelligent Manufacturing 7(2), 133144.



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