Evaluation of friction coefficient for simulation of stamping

• Autorzy: Evin E.
• Konferencja: Terotechnologia 2009. Materiały Konferencji na ekspozycji METAL i CONTROL-TECH Targi-Kielce (29.09-01.10.2009 ; Kielce, Polska)
• Języki publikacji: EN

Abstrakty

EN

In order to define the friction coefficient the simulator of strip drawn test between flat dies and cup test were applied. To evaluate the friction coefficient between flat dies the modified Coulomb law was used and to define the friction at die drawing edge the modified Ouehler formula was applied. The applied processes can contribute to quality improvement of FEM analyses at steel sheet stamping. For experiments the extra drawable Zn coated and uncoated steel sheets (DX 54D – extra deep drawable Zn coated steel sheet, TRIP – Tranasformation Inducted Plasticity) suitable for cold forming by stretching were applied.

Słowa kluczowe

EN

friction coefficient; simulation of stamping; FEM

• Wydawca: Wydawnictwo Politechniki Świętokrzyskiej
• Czasopismo: Zeszyty Naukowe Politechniki Świętokrzyskiej. Nauki Techniczne
• Rocznik: 2009
• Tom: Z. 13
• Strony: 126--133
• Opis fizyczny: Bibliogr. 11 poz., rys., tab., wykr., wzory

Twórcy

autor

Evin E.

• CSc – Technical University of Kosice, Masiarska 74, SR – 040 01 Košice

Bibliografia

• 1. Doege E., Droder B., Greisbach B.: On development of new characteristic value for the evaluation of sheet metal formability. Journal of Materials Processing Technology, 1997.
• 2. Lange K.: Umformtechnik - Blechbearbeitung. Springer/Verlag, Berlin, 1990.
• 3. Mahrenholtz O., Bontcheva N.: Influence of surface roughness on friction during metal forming processes. Journal of Materials Processing Technology, 2005.
• 4. Hrivňák, A., Evin E.: Formability of steel sheets. Elfa, Košice, 2004.
• 5. Sniekers RJJM., Smits HAA.: Experimental set-up and data processing of the radial strip-drawing friction test. Journal of Materials Processing Technology, 1997.
• 6. Evin E., Hrivňák A., Tkáčová J.: Measurement and evaluation of friction ratios at deep drawing. Journal for Technology of Plasticity, 2001.
• 7. Evin E., Pinko P., Kmec: Numerical simulation of deep-drawing process and coefficient of friction. Manufacturing Engineering, 2008.
• 8. Becka J.: Tribologie. CVUT, Praha, 1997.
• 9. Audy J., Evin E.: Evaluation of forces and work generated by uncoated and TiN coated tools in backward extrusion of cylindrical - low carbon steel - slugs. Journal Forging 31, 2008.
• 10. Audy J., Evin E.: Study of friction conditions in deep drawing process with TiN coated tools, Journal Forging 33, 2008.
• 11. Audy J., Evin E.: Exploring efficiency of tool coating via deep drawing of cylindrical cups. MMScience Journal, 2008.

Uwagi

EN

This work was completed in the framework of the project APVV-0629-06 and national Grant project VEGA 1/0890/08.