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doctoral thesis
Utjecaj odstupanja dimenzija na životni vijek polimernih zupčanika
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2013. urn:nbn:hr:235:140973
Domitran, Zoran
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

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Domitran, Z. (2013). Utjecaj odstupanja dimenzija na životni vijek polimernih zupčanika (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:140973

Domitran, Zoran. "Utjecaj odstupanja dimenzija na životni vijek polimernih zupčanika." Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2013. https://urn.nsk.hr/urn:nbn:hr:235:140973

Domitran, Zoran. "Utjecaj odstupanja dimenzija na životni vijek polimernih zupčanika." Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2013. https://urn.nsk.hr/urn:nbn:hr:235:140973

Domitran, Z. (2013). 'Utjecaj odstupanja dimenzija na životni vijek polimernih zupčanika', Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 17 November 2024, https://urn.nsk.hr/urn:nbn:hr:235:140973

Domitran Z. Utjecaj odstupanja dimenzija na životni vijek polimernih zupčanika [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2013 [cited 2024 November 17] Available at: https://urn.nsk.hr/urn:nbn:hr:235:140973

Z. Domitran, "Utjecaj odstupanja dimenzija na životni vijek polimernih zupčanika", Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2013. Available at: https://urn.nsk.hr/urn:nbn:hr:235:140973

Metadata
TitleUtjecaj odstupanja dimenzija na životni vijek polimernih zupčanika
Title (english)Investigation of dimensional tolerances on the polymer gear life
AuthorZoran Domitran
MentorMilan Opalić (mentor)
Committee memberMladen Šercer (predsjednik povjerenstva)
Committee memberMilan Opalić (član povjerenstva)
Committee memberVinko Ivušić (član povjerenstva)
Committee memberTatjana Haramina (član povjerenstva)
Committee memberJože Flašker (član povjerenstva)
strani drzavljanin: Nije dostupno
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2013-10-23, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
General Mechanical Engineering (Construction)
Universal decimal classification
(UDC)		678 - Industries based on macromolecular materials. Rubber industry. Plastics industry
621 - Mechanical engineering. Nuclear technology. Machinery
Abstract
Životni vijek polimernih zupčanika većim je dijelom uvjetovan njihovim geometrijskim karakteristikama i svojstvima materijala, čiji međusobni utjecaji nisu dovoljno istraženi. U ovom radu provedeno je istraživanje utjecaja pomaka profila, opterećenja te stanja materijala na radni vijek polimernih zupčanika i kvalitetu rada prijenosnika. Provedena je klasifikacija osnovnih svojstava polimera s naglaskom utjecaja vode na mehanička svojstva poliamida. Također, analizirani su načini izrade i utjecaj bočne zračnosti u interakciji s promjenom sadržaja vode u poliamidu. Dane su smjernice za izračun bočne zračnosti prema funkciji prijenosnika. Prikazom rezultata eksperimentalnih istraživanja potvrđen je utjecaj temperature na radni vijek polimernih zupčanika. Dane su matematičke formulacije za izračun očekivane srednje temperature bokova zuba, gubitak mase te očekivani ostvareni broj radnih ciklusa do kolapsa zupčanika prema ulaznim parametrima. Klasifikacijom uvjeta radnog vijeka zupčanika prikazane su očekivane tendencije promjene buke i kvalitete rada polimernih zupčanika. Postavljene su granice opteretivosti prema zaribavanju zupčanika od poliamida 6 (PA 6) za područje brzina vrtnje od 1000 do 2100 min-1 u kombinaciji materijala PA 6/PA 6. Znanstveni doprinos ostvaren je dobivanjem iskustvenih vrijednosti, važnih za točnije i pouzdanije projektiranje polimernih zupčanika, te postavljanje zakonitosti vezanih uz granice opteretivosti. Osobit doprinos dan je utvrđivanjem utjecaja stanja ispitnog materijala na pojavu oštećenja kod polimernih zupčanika.
Abstract (english)
Polymer spur gear based transmission systems are becoming increasingly important due to economically acceptable production costs. Life of such gears is highly dependent on the mechanical loads in interaction with geometrical and material properties, which is not yet sufficiently investigated. Therefore, the main goal of this research was to establish the effects of profile shift, torque and different material conditions on the polymer (polyamide PA 6) gear life. In addition, the effects of various production methods as well as the effects of backslash in interaction with water content in polymer have also been investigated. Experimental part of research was done on testbed with locked gear train power transmission system capable of measuring temperatures in close proximity to the gear mesh. Mathematical models based on experimental results have been suggested for estimation of mean temperatures in gear mesh, loss of mass under different working conditions and expected number of cycles. Basic polymer properties have been classified with emphasis on the effects of water on their mechanical properties. Recommendations for backslash calculation with respect to the transmission system application have also been provided. Trends of noise and quality of transmission operation have also been investigated with respect to the working conditions and conditions for the end of gear life. Finally, thermal failure boundaries for polyamide gear pairs without lubrication have been established under different working conditions.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:140973
Study programmeTitle: Mechanical Engineering and Naval Architecture
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, područje tehničkih znanosti (doktor/doktorica znanosti, područje tehničkih znanosti)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-04-29 12:29:07