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Abstract:
The most
advantage of variable blankhoder force is that the blankholder force can
be set according to the forming characters of different phases in sheet
metal forming, so advantage of the material formability can be taken
fully. However, how to design the variable blankhoder force has not been
confirmed yet. The feasibility and validity of the answers are not
accepted when using a hybrid optimization algorithm to solve constrained
problems, which was put forward by Tohata. Accordingly a improved hybrid
optimization algorithm is put forward and the improved optimization
algorithm can be used to solve the non – linear constrained optimization
problems. After integrating the improved hybrid optimization algorithm
and a numerical simulation software, a design method of variable
blankholder force is put forward, which is to use the optimization
theory and numerical simulation to design variable blankholder force.
Using this method to design a kind of variable blankholder force to
control a ball cylinder cup forming process, the reduction of thickness
is reduced dramatically, and quality of part is improved.
Key words:
Variable
blankholder force Improved hybrid optimization algorithm
Numerical simulation
CLC No: TG386.3
Received
20000508, received in revised form 20000728
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