On the use of SLS Tools in Sheet Metal Stamping

CIRP Annals ◽  
2003 ◽  
Vol 52 (1) ◽  
pp. 249-252 ◽  
Author(s):  
G.N. Levy ◽  
R. Schindel ◽  
P. Schleiss ◽  
F. Micari ◽  
L. Fratini
Author(s):  
Xiaobing Dang ◽  
Ruxu Du ◽  
Kai He ◽  
Qiyang Zuo

As a light-weight material with high stiffness and strength, cellular metal has attracted a lot of attentions in the past two decades. In this paper, the structure and mechanical properties of aluminum cellular metal with periodic cubic cells are studied. The aluminum cellular metal is fabricated by sheet metal stamping and simple adhesion. Two sizes of specimens with cell sizes of 3mm and 5mm are fabricated. Their relative density and mechanical properties are tested by means of experiments. The results show that the cubic-cell cellular metal has high and predictable strength and hence, can be used for many practical applications.


Author(s):  
Wu-rong Wang ◽  
Bo Hou ◽  
Zhong-qin Lin ◽  
Z. Cedric Xia

High strength steels (HSSs) are one of the light-weight sheet metals well suited for reducing vehicle weight due to their higher strength-to-weight ratio. However, HSS tend to have bigger variations in their mechanical properties due to more complex rolling techniques involved in the steel-making process. Such uncertainties, when combined with variations in the process parameters such as friction and blank holder force, pose a significant challenge in maintaining the robustness of HSS sheet metal stamping. The paper presents a systematic and robust approach, combining the power of the finite element method and stochastic statistics to decrease the sensitivity of HSS stamping in the presence of above-mentioned uncertainties. First, the statistical distribution of sheet metal properties of selected HSS is characterized from a material sampling database. Then a separate interval adaptive response surface methodology (RSM) is applied in modeling sheet metal stamping. The new method significantly improves the model accuracy when compared with the conventional RSM within a single interval. Finally, the Monte Carlo method is employed to simulate the stochastic response of material/process variations to stamping quality and to provide optimal process parameter designs to reduce the sensitivity of these effects. The experiment with the obtained optimal process design demonstrates the improvements of stamping robustness using small-batch experiments.


Wear ◽  
2010 ◽  
Vol 268 (11-12) ◽  
pp. 1275-1284 ◽  
Author(s):  
Michael P. Pereira ◽  
Wenyi Yan ◽  
Bernard F. Rolfe

2006 ◽  
Vol 177 (1-3) ◽  
pp. 138-141 ◽  
Author(s):  
Chen-Hua She ◽  
Chun-Cheng Chang ◽  
Yung-Chou Kao ◽  
Hsin-Yu Cheng

Wear ◽  
2018 ◽  
Vol 414-415 ◽  
pp. 31-42 ◽  
Author(s):  
Vignesh V. Shanbhag ◽  
Bernard F. Rolfe ◽  
Narayanan Arunachalam ◽  
Michael P. Pereira

2004 ◽  
Vol 471-472 ◽  
pp. 895-899 ◽  
Author(s):  
W. Liu ◽  
Yu Ying Yang ◽  
Z.W. Xing

More powerful process design methods and tools of sheet metal stamping are needed to help engineers design better products, to reduce lead times and costs, and to increase product performance and accuracy. A novel model for representation of object-oriented case information constitution relationship is presented, ‘Class-Property’ structure is proposed in order to refine the case representation, multi-types, properties are adopt to describe more detailed information, three hierarchies of index strategy are used to realize case extraction. Furthermore, experts’ knowledge and experience on previous design cases and forming problems are collected, which can provide designers useful practical experience and data to aid design procedure and to solve the potential problems of sheet metal stamping. In order to illustrate these applications, database technology is used to realize a prototype system of auto body panels, which can be used to integrate process design information and manufacture resources.


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