Upsetting analysis of high-strength tubular specimens with the Taguchi method

Pepelnjak, Tomaž (avtor), Šašek, Patricia (avtor), Kudláček, Jan (avtor)

In order to obtain input data for numerical simulations of tube forming, the material properties of tubes need to be determined. A tube tensile test can only be used to measure yield stress and ultimate tensile stress. For tubes with a large diameter/thickness ratio (D/t), tensile specimens are cut out and processed in a similar way as with sheet metal. However, for thin tubes with a diameter/thickness ratio below 10, the tensile specimens could not be cut out. The flow curve of the analyzed tube with a small diameter and D/t ratio of 7 was determined with a ring-shaped specimen. The experimental force-travel diagram was acquired. A reverse-engineering method was used to determine flow curves by numerical simulations. Using an L$_{25}$ orthogonal array of the Taguchi method different flow curve parameters and friction coefficient combinations were selected. Tube upsetting with determined parameter combinations was performed with the finite element method. With analysis of variance influential equations among selected input parameters were determined for the force levels at six upsetting states. With the evaluation of known friction coefficients and flow curve parameters, K, n, and ε$_0$ according to the Swift approximation were determined and proved by the final shape of the workpiece.

• Jezik: Angleški jezik
• Ključne besede: tubes, forming, flow curve, reverse engineering, Taguchi method
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2016
• Št. strani: 14 str.
• Številčenje: Vol. 6, iss. 11, art. 257
• PID: 20.500.12556/RUL-131533
• UDK: 621.7:519.62(045)
• ISSN pri članku: 2075-4701
• DOI: 10.3390/met6110257
• COBISS.SI-ID: 15008283
• Datum objave v RUL: 29.09.2021

Gradivo je del revije

• Naslov: Metals
• Skrajšan naslov: Metals
• Založnik: MDPI AG
• ISSN: 2075-4701
• COBISS.SI-ID: 15976214

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 01.11.2016

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: cevi, preoblikovanje, krivulja plastičnosti, obratno inženirstvo, metoda Taguchi

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0248
• Naslov: Inovativni izdelovalni sistemi

• Financer: Drugi - Drug financer ali več financerjev
• Program financ.: CEEPUS
• Številka projekta: CIII-HR-0108