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Process Characteristics in Flexible Flow Splitting

Neuwirth, Manuel and Özel, Mahmut and Groche, Peter (2017):
Process Characteristics in Flexible Flow Splitting.
In: Steel Research International, 87, [Online-Edition: http://dx.doi.org/10.1002/srin.201600370],
[Article]

Abstract

Flexible flow splitting enables manufacturing a new kind of semi-finished goods: bifurcated sheet metal in integral style with non-linear progression of the bifurcation line. Beside special geometrical features, this forming process is associated with severe plastic deformation (spd) processes. Due to the strategy of process guidance, it is possible to process diverse parts with different geometry and mechanical behavior without changing of tools or programming. To predict complex flow splitting processes with the help of FEM simulation, methods like the cut and expand method (CEM) have been developed in the recent past, to decrease calculation time and increase efficiency of the simulation. As the flexible flow splitting process is a non-steady forming process, this method is no longer suitable and has to be adapted. A further development of the cut and flexible expand method (CfEM) will solve this problem. This paper will present the operation mode of the process and the simulation method. The characteristics of this forming process and a comparison of experimental and numerical results will be presented.

Item Type: Article
Erschienen: 2017
Creators: Neuwirth, Manuel and Özel, Mahmut and Groche, Peter
Title: Process Characteristics in Flexible Flow Splitting
Language: English
Abstract:

Flexible flow splitting enables manufacturing a new kind of semi-finished goods: bifurcated sheet metal in integral style with non-linear progression of the bifurcation line. Beside special geometrical features, this forming process is associated with severe plastic deformation (spd) processes. Due to the strategy of process guidance, it is possible to process diverse parts with different geometry and mechanical behavior without changing of tools or programming. To predict complex flow splitting processes with the help of FEM simulation, methods like the cut and expand method (CEM) have been developed in the recent past, to decrease calculation time and increase efficiency of the simulation. As the flexible flow splitting process is a non-steady forming process, this method is no longer suitable and has to be adapted. A further development of the cut and flexible expand method (CfEM) will solve this problem. This paper will present the operation mode of the process and the simulation method. The characteristics of this forming process and a comparison of experimental and numerical results will be presented.

Journal or Publication Title: Steel Research International
Volume: 87
Uncontrolled Keywords: FEM Simulation, Flexible Flow Splitting, non-steady massive forming, CfEM
Divisions: 16 Department of Mechanical Engineering > Institut für Produktionstechnik und Umformmaschinen (PtU)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 666: Integral Sheet Metal Design with Higher Order Bifurcations
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
16 Department of Mechanical Engineering
Date Deposited: 04 May 2017 06:14
Official URL: http://dx.doi.org/10.1002/srin.201600370
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