Optimum design of forging dies using fuzzy logic in conjunction with the backward deformation method |
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Authors: | FR Biglari NP O'Dowd RT Fenner |
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Affiliation: | Mechanical Engineering Department, Imperial College of Science, Technology and Medicine, London SW7 2BX, UK |
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Abstract: | A novel shape optimization method is presented for the design of preform die shapes in multistage forging processes using a combination of the backward deformation method and a fuzzy decision making algorithm. In the backward deformation method, the final component shape is taken as the starting point, and the die is moved in the reverse direction with boundary nodes being released as the die is raised. The optimum die shape is thereby determined by taking the optimum reverse path. A fuzzy decision making approach is developed to specify new boundary conditions for each backward time increment based on geometrical features and the plastic deformation of the workpiece. In order to demonstrate this approach, a design analysis for an axisymmetric disk forging is presented in this paper. |
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Keywords: | Dies Forging Fuzzy sets Algorithms Decision making Boundary conditions Plastic deformation Disks (machine components) Backward deformation method |
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