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.
Original language | English |
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Pages (from-to) | 981-1000 |
Number of pages | 20 |
Journal | International Journal of Machine Tools and Manufacture |
Volume | 38 |
Issue number | 8 |
DOIs | |
Publication status | Published - Aug 1998 |
Externally published | Yes |