Postolje za ispitivanje nosivosti korijena zuba zupčanika

master's thesis

• Title (english): Fixture for testing of gear tooth root load capacity
• Author: Branko Milec
• Mentor: Krešimir Vučković (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2018-07-13, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; General Mechanical Engineering (Construction)

Abstract

Zamor materijala uslijed cikličkog opterećenja jedan je od glavnih uzroka loma zuba zupčanika. Na mjestima povišene koncentracije naprezanja, kao što je područje korijena zuba zupčanika, mogu nastati pukotine, a njihovim daljnjim širenjem može doći i do konačnog loma zuba, što može imati katastrofalne posljedice. Najraširenija metoda ispitivanja zamora zuba čelnih zupčanika je metoda cikličkog savijanja jednog zuba. Takvo testiranje omogućuje prikupljanje podataka o ponašanju zupčanika u području visokocikličkog zamora u kontroliranim laboratorijskim uvjetima. Kako bi se dobivali konzistentni i ponovljivi rezultati. U radu je konstrukcijski razrađen testni uređaj za ispitivanje temeljen na normiranom ispitnom postolju Američkog društva inženjera u autoindustriji (SAE International). Postolje je modificirano na način da se kontakt sa zubom koji se ispituje ostvaruje u vanjskoj točki jednostrukog zahvata, pošto je to u realnim situacijama najkritičniji slučaj opterećivanja zuba.

Abstract (english)

Fatigue of materials is one of the leading causes of ger tooth failure. Since gears are dynamicaly loaded in use, cracks can form in places of stress concentration like the root of the gear tooth. Further growth of crack leads to tooth breakage, which can have catastrophic consequences. Most widely used method for testing of gears fatigue behaviour is the single tooth bending fatigue method. For the purpose od single tooth fatigue tests, various test fixtures are developed. In this paper, such test fixture is designed based on the test fixture developed by SAE Internationl's Division 33. Fixture was modified to achieve contact with the test tooth in highest point of single tooth contact, which is the most critical case of gear tooth loading.

• Keywords: Zamor materijala; nosivost korijena zuba; ispitivanje zupčanika; metoda cikličkog savijanja jednog zuba
• Keywords (english): Gear fatigue; single tooth bending; gear tooth load capacity; STF test fixture; Single tooth fatigue
• Language: croatian
• URN:NBN: urn:nbn:hr:235:843800
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 22:49:35