Assessment of Sensitivity of Numerical Simulation in Sheet Metal Forming Process Applied for Robust Design

2013 ◽  
pp. 493-503 ◽  
Author(s):  
Von Dim Nguyen ◽  
Pierre-Antoine Adragna ◽  
Pascal Lafon
Keyword(s):  
Numerical Simulation ◽  
Sheet Metal ◽  
Robust Design ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Forming Process ◽  
Metal Forming Process

Process Optimization of Sheet Metal Forming Using Operating Window

2009 ◽  
Author(s):  
Kyungmo Kim ◽  
Jeong Je Yin ◽  
Yong S. Suh
Keyword(s):  
Sheet Metal ◽  
Robust Design ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Failure Modes ◽  
Optimization Techniques ◽  
Forming Process ◽  
Window Method ◽  
Metal Forming Process ◽  
Operating Window

Sheet metal forming process may yield unexpected defective products due to many uncontrollable factors such as irregular material properties, lubricants, and variations of other forming conditions. Traditional design methods based on deterministic optimization theory have limited capability of including such factors. In this paper, we propose a method in determining the optimal condition of a sheet metal forming process with conflicting failure modes. A robust design method is used with computer simulations and optimization techniques. A new SN ratio is proposed based on the operating window method, to improve the problems of traditional SN ratio. The robust design process is applied to a sheet metal forming process for an automobile component, and the effectiveness of the proposed method is verified.

Numerical Simulation of Stamping Forming of Automobile Cover

2010 ◽  
Vol 33 ◽  
pp. 496-501 ◽  
Author(s):  
Hui Min Fang ◽  
Guang Sheng Zhang
Keyword(s):  
Numerical Simulation ◽  
Friction Coefficient ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Forming Process ◽  
Corner Radius ◽  
Metal Forming Process ◽  
Actual Operation ◽  
Main Defect

The main defect of the inner-hood is break, which was obtained by the numerical simulation of it’s forming process. The main impacted parameters of sheet metal forming process are corner radius of die, friction coefficient, clearance between punch and die and the height of drawbead. The maximum impact of the break of forming factors was drawbead high, followed by the die gap, die edge and the friction coefficient which were obtained by the four factors orthogonal optimized simulation. The comparison between the results of numerical simulation and actual operation proved the accuracy of the numerical simulation.

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