Minimizing the required forming force in the sheet hydroforming process using a fractional factorial design
Author(s):
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
The optimal forming of the metallic parts with the lowest required forming force has always been the focus of researchers. In this paper, effective parameters in hydrodynamic deep drawing assisted by radial pressure of cylindrical cups with a flat head with minimum required forming force have been investigated. At first, the necessary experiments were designed using the fractional factorial design of experiment. In this design, maximum fluid pressure, punch velocity, punch nose radius, friction coefficient between punch and sheet, friction coefficient between die and sheet, and die entrance radius were considered input variables. An experimentally validated finite element model was used for performing the designed experiments and extracting the maximum punch force for each experiment. Finally, by using analysis of variance, the main and the interaction effects of the parameters on the maximum punch force were determined. Results showed that the maximum fluid pressure and punch nose radius have the highest influence on the maximum punch force. Decreasing the maximum fluid pressure from 39 to 15 MPa, leads to a decrease of 55% in the maximum punch force. Also, by reducing the punch nose radius from 10 to 2 mm, the maximum punch force decreases by 55%.
Keywords:
Language:
Persian
Published:
Iranian Journal of Manufacturing Engineering, Volume:9 Issue: 12, 2023
Pages:
1 to 9
https://www.magiran.com/p2630670
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