FEA of deep drawing with dynamic interactions between die cushion and process enables realistic blank holder force predictions

• Autorzy: Großmann K. , Penter L. , Hardtmann A. , Weber J. , Lohse H.
• Języki publikacji: EN

Abstrakty

EN

In order to efficiently compute dynamic interactions between the machine and the forming process, one approach for integrating the dynamic properties of the press, particularly of the die cushion, into the FE forming process simulation is introduced. A free-programmable-force model was used to make a condensed signal model of the die cushion's hydraulics and control available as a discrete element in an FEA Software. The user can now benefit from more realistic machine responses in FE forming simulations without the need for additional multi-body-simulation software. The authors conclude the paper by describing the successful experimental validation of the approach, including a comparison between simulated and measured blank holder force curves.

Słowa kluczowe

EN

FEA; dynamics; hydraulics; control; process simulation

PL

dynamika; hydraulika; kontrola; symulacji procesu

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2012
• Tom: Vol. 12, no. 3
• Strony: 273--278
• Opis fizyczny: Bibliogr. 9 poz., rys., wykr.

Twórcy

autor

Großmann K.

• Institute of Machine Toolsand Control Engineering, Dresden University of Technology, Helmholtzstraße 7a, 01062 Dresden, Germany

autor

Penter L.

• Institute of Machine Toolsand Control Engineering, Dresden University of Technology, Helmholtzstraße 7a, 01062 Dresden, Germany

autor

Hardtmann A.

• Institute of Machine Toolsand Control Engineering, Dresden University of Technology, Helmholtzstraße 7a, 01062 Dresden, Germany

autor

Weber J.

• Institute of Fluid Power, Dresden University of Technology, Helmholtzstraße 7a, 01062 Dresden, Germany

autor

Lohse H.

• Institute of Fluid Power, Dresden University of Technology, Helmholtzstraße 7a, 01062 Dresden, Germany

Bibliografia

• [1] B.-A. Behrens, O. Marthiens, T. Matthias, S. Helduser, H. Lohse, Antriebs- und Prozessoptimierung hydraulischer Tiefzieh-pressen mit Hilfe der gekoppelten Simulation. Technical Report 291, EFB, 2009.
• [2] P. Bogon, Betriebsverhalten von hydraulischen Zieheinrichtungen in Mehrstoßel-transferpressen. Bleche Rohre Profile, 98(7/8), 1998, pp. 46–51.
• [3] K. Großmann, J. Weber, H. Lohse, L. Penter, Simulation von ziehkisseneinflussen im fem-prozessmodell. Technical Report 336, EFB, 2011.
• [4] J. Hallquist, LS-DYNA Keyword User’s Manual. Livermore Software Technology Corporation (LSTC), May 2007.
• [5] A. Hardtmann, Entwicklung und Bewertung eines erweiterten Blechumformprozess-modells unter besonderer Berucksichtigung der elasto-statischen Wechselwirkungenen zwischen Maschine und Prozess, Ph.D. Thesis, TU-Dresden, Dresden, 2010.
• [6] H. Mann, H. Schiffelgen, R. Froriep, Einfuhrung in die Regelungstechnik, 11, Carl Hanser Verlag, Munchen, 2009.
• [7] G. Merziger, T. Wirth, G. Muhlbach, D. Wille, Formeln Hilfen zur hoheren Mathematik, 3, Springe, Binomi Verlag, 1999.
• [8] K. Simonsson, L. Olovsson, M. Unosson, Selective mass scaling for explicit finite element analyses, International Journal for Numerical Methods in Engineering 63 (2005) 1436–1445.
• [9] L.O. Schapp, Gekoppelte Simulation von Maschine und Prozess in der Massivumformung, Ph.D. Thesis, RWTH Aachen, 2008.