Groche, Peter ; Taplick, Christoph ; Özel, Mahmut ; Mahajan, Pushkar ; Stahl, Simon (2016):
Benefits of stress superposition in combined bending-linear flow splitting process.
In: International Journal of Material Forming, 11, pp. 19-29. ISSN 1960-6206,
DOI: 10.1007/s12289-016-1325-4,
[Article]
Abstract
Linear flow splitting is a multi-station sheet-bulk metal forming process which allows continuous production of bifurcated profiles without joining, lamination or external heating of sheet metal. This process induces high hydrostatic stresses in the forming zone which leads to an elevated formability of the workpiece material. The aim of this research is to bend linear flow split profiles in transverse direction in a continuous manner. This is achieved by combining the linear flow splitting process with a continuous bending process. An analytical and a numer- ical model are described in this paper which predict bending moments for different radii. Results from both models are vali- dated with experimental results. It is found that combining the linear flow splitting with a bending process leads to a severe reduction in the bending moments due to superposition of stress- es in the forming zone. The superposition maintains the cross sectional shape of the bent profiles. Keywords
| Item Type: | Article |
|---|---|
| Erschienen: | 2016 |
| Creators: | Groche, Peter ; Taplick, Christoph ; Özel, Mahmut ; Mahajan, Pushkar ; Stahl, Simon |
| Title: | Benefits of stress superposition in combined bending-linear flow splitting process |
| Language: | English |
| Abstract: | Linear flow splitting is a multi-station sheet-bulk metal forming process which allows continuous production of bifurcated profiles without joining, lamination or external heating of sheet metal. This process induces high hydrostatic stresses in the forming zone which leads to an elevated formability of the workpiece material. The aim of this research is to bend linear flow split profiles in transverse direction in a continuous manner. This is achieved by combining the linear flow splitting process with a continuous bending process. An analytical and a numer- ical model are described in this paper which predict bending moments for different radii. Results from both models are vali- dated with experimental results. It is found that combining the linear flow splitting with a bending process leads to a severe reduction in the bending moments due to superposition of stress- es in the forming zone. The superposition maintains the cross sectional shape of the bent profiles. Keywords |
| Journal or Publication Title: | International Journal of Material Forming |
| Volume of the journal: | 11 |
| Uncontrolled Keywords: | Linear flowsplitting, Finite element analysis, Bending, Springback |
| Divisions: | 16 Department of Mechanical Engineering 16 Department of Mechanical Engineering > Institut für Produktionstechnik und Umformmaschinen (PtU) DFG-Collaborative Research Centres (incl. Transregio) DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 666: Integral Sheet Metal Design with Higher Order Bifurcations |
| Date Deposited: | 29 Jun 2017 06:04 |
| DOI: | 10.1007/s12289-016-1325-4 |
| URL / URN: | http://link.springer.com/10.1007/s12289-016-1325-4 |
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