Grüner M, Merklein M (2011)
Publication Type: Conference contribution
Publication year: 2011
Publisher: American Institute of Physics
Book Volume: 1383
Pages Range: 645-652
Conference Proceedings Title: AIP Conference Proceedings Volume 1383 - The 8th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes (NUMISHEET 2011)
ISBN: 9780735409491
DOI: 10.1063/1.3623668
The need of lightweight construction for the body in white of modern cars increases due to legal restrictions of CO2 emissions and the passenger s wishes of safety and low fuel consumption. On e approach of lightweight construction is the use of high and ultra high strength steel, to reduce the weight of the single parts, another approach is the use of modern forming technologies, e.g. hydroforming with the possibility to create undercuts, to produce complex parts and thus to reduce the number of parts, the number of joining operations and the weight. The mentioned ultra high strength steels show a poor formability at room temperature and the necessary process forces are high compared to standard deep drawings teels. Warmforming operations can help to reduce the process forces and to increase formability [1]. To combine the benefits of warm forming and hydroforming new forming media are necessary to overcome the problem of temperature stability of fluids, which is limited to about 350 °C [2]. Beside gases, which tend to leakage and which are highly compressible, granular material like small ceramic beads can be used as a forming medium. First results of forming operations using this medium were presented in [3]. The experimental tool used for those tests pressurizes the medium by a punch. To divide the effects caused by temperature and steel grade from the other effects experiments were carried out at room temperature using the well know n deep drawing steel DC04. Influences of the ceramic beads diameter, the number of repetitions, the punch geometry as the punch position, determining the volume of media, on the forming are presented. © 2011 American Institute of Physics.
APA:
Grüner, M., & Merklein, M. (2011). Influences on the Molding in Hydroforming Using Granular Material as a Medium. In Chung, K.; Han, H. N.; Huh, H. Barlat, F.; Lee, M.-G. (Eds.), AIP Conference Proceedings Volume 1383 - The 8th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes (NUMISHEET 2011) (pp. 645-652). American Institute of Physics.
MLA:
Grüner, Martin, and Marion Merklein. "Influences on the Molding in Hydroforming Using Granular Material as a Medium." Proceedings of the AIP Conference Proceedings Volume 1383 - The 8th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes (NUMISHEET 2011) Ed. Chung, K.; Han, H. N.; Huh, H. Barlat, F.; Lee, M.-G., American Institute of Physics, 2011. 645-652.
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