Numerična simulacija tehnološkega postopka izdelave vilic zaganjalnika

Hren, Gašper (author), Halilovič, Miroslav (mentor), Starman, Bojan (co-mentor)

V nalogi obravnavamo vilice zaganjalnika, ki med zagonom motorja poskrbijo za stik med vrtečim pastorkom in vztrajnikom na motorju. Skozi izkušnje se je pokazalo, da je zaradi visokih obremenitev prihajalo do loma vilic, kar se je rešilo z menjavo materiala. Poglavitni cilj magistrske naloge je numerična simulacija krivljenja oziroma izdelave vilic, saj ima tehnološki postopek izdelave velik vpliv na življenjsko dobo vilic. Za samo simulacijo je treba določiti materialne lastnosti obeh vrst jekel, kar je izvedeno z enoosnim nateznim preizkusom. Ob rezultatih numerične simulacije je analizirana tudi geometrijska adaptacija orodja krivljenja vilic.

• Language: Slovenian
• Keywords: plastičnost, numerična simulacija, preoblikovanje, vilice zaganjalnika, natezni test, metoda končnih elementov
• Work type: Master's thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [G. Hren]
• Year: 2023
• Number of pages: XX, 58 str.
• PID: 20.500.12556/RUL-152100
• UDC: 519.62:621.7:678.024(043.2)
• COBISS.SI-ID: 172415235
• Publication date in RUL: 03.11.2023

Secondary language

• Language: English
• Title: Forming process simulation of shifting fork for automotive engine starter

Abstract

The focus of the master's thesis is on the starter fork, which ensures contact between the rotating lever and the engine's flywheel during engine startup. Due to considerable loads, the part was prone to break, which was resolved by replacing the material. The main emphasis of the master's thesis is on a numerical simulation of the manufacturing process of the lever, as the surface of the it appears slightly cracked even before practical operation. Determining the material properties of both types of steel is necessary for the simulation, which is achieved through uniaxial tensile testing. Based on the results of the numerical simulation, a geometric adaptation of the fork manufacturing tooling is provided.

• Keywords: plasticity, numerical simulation, forming, lever fork of starter motor, tensile testing, finite element method