FE analysis of tube forming process with experimental verification

• Autorzy: Mandic V. , Stefanovic M. , Zivkovic M. , Grujovic N. , Misic B.
• Języki publikacji: EN

Abstrakty

EN

Purpose: of this paper: The paper presents some results of extensive investigation of steel seam-welded tubes forming process, by applying combined treatment of material narrowing and expansion. The objective of executed numerical FE and experimental investigations was to determine the optimal technology for production of tubular product at simple tools and at the standard forming processing machines, without defects and with demanded dimensional accuracy. Design/methodology/approach: Tube forming was done in one phase, in tool with two shaping spherical parts, that enables the expansion of the specimen’s central zone and the filling of the die due to narrowing of the specimen ends, when certain conditions are achieved and with appropriate combination of influential process parameters (outer diameter, height and tube’s wall thickness, as well as friction conditions). Series of physical and numerical FE experiments was performed. Findings: Optimal dimensions of tubular product, with required process stability, were obtained this way. Also, results of experiments pointed out that the best process stability and die filling is achieved with specimens whose surfaces had previously been chemically treated. Results of numerical FE simulations of process are quite verified by experiments. Practical implications: Obtained results have practical significance in solving similar processing problems. It also enables to investigate and broaden the knowledge on stability of these kinds of processes, beyond the scope of experimental investigations. Tubular product that is subjected to numerical-experimental investigation in this paper is prepared by narrowing it at both ends thus excluding the possibility to apply holder inside the tube. Originality/value: Proposed method offers possibility for production of tubular products at simple forming machines and tools, without complex and expensive hydroforming equipment.

Słowa kluczowe

EN

numerical techniques; seam-welded tube forming; narrowing; expansion

PL

techniki numeryczne; kształtowanie rur; zwężenie; rozszerzenie

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 18, nr 1-2
• Strony: 303--306
• Opis fizyczny: Bibliogr. 15 poz., rys., tab., wykr.

Twórcy

autor

Mandic V.

• Mechanical Engineering Faculty, University of Kragujevac, S. Janjic 6, 34000 Kragujevac, Serbia and Montenegro

autor

Stefanovic M.

• Mechanical Engineering Faculty, University of Kragujevac, S. Janjic 6, 34000 Kragujevac, Serbia and Montenegro

autor

Zivkovic M.

• Mechanical Engineering Faculty, University of Kragujevac, S. Janjic 6, 34000 Kragujevac, Serbia and Montenegro

autor

Grujovic N.

• Mechanical Engineering Faculty, University of Kragujevac, S. Janjic 6, 34000 Kragujevac, Serbia and Montenegro

autor

Misic B.

• Technical College of Doboj, Kralja Dragutina 68, 74000 Doboj, Bosnia and Herzegovina

Bibliografia

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