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master's thesis
UJEDNAČAVANJE RASPODJELE NAPREZANJA VIJČANOG SPOJA OPTIMIRANJEM GEOMETRIJE USPONA
Slavonski Brod: Josip Juraj Strossmayer University of Osijek, Mechanical Engineering Faculty in Slavonski Brod, 2016. urn:nbn:hr:153:311126
Šimunović, Vjekoslav
Josip Juraj Strossmayer University of Osijek
Mechanical Engineering Faculty in Slavonski Brod

Institutional repository: Repository of Mechanical Engineering in Slavonski Brod

Cite this document

Šimunović, V. (2016). UJEDNAČAVANJE RASPODJELE NAPREZANJA VIJČANOG SPOJA OPTIMIRANJEM GEOMETRIJE USPONA (Master's thesis). Slavonski Brod: Josip Juraj Strossmayer University of Osijek, Mechanical Engineering Faculty in Slavonski Brod. Retrieved from https://urn.nsk.hr/urn:nbn:hr:153:311126

Šimunović, Vjekoslav. "UJEDNAČAVANJE RASPODJELE NAPREZANJA VIJČANOG SPOJA OPTIMIRANJEM GEOMETRIJE USPONA." Master's thesis, Josip Juraj Strossmayer University of Osijek, Mechanical Engineering Faculty in Slavonski Brod, 2016. https://urn.nsk.hr/urn:nbn:hr:153:311126

Šimunović, Vjekoslav. "UJEDNAČAVANJE RASPODJELE NAPREZANJA VIJČANOG SPOJA OPTIMIRANJEM GEOMETRIJE USPONA." Master's thesis, Josip Juraj Strossmayer University of Osijek, Mechanical Engineering Faculty in Slavonski Brod, 2016. https://urn.nsk.hr/urn:nbn:hr:153:311126

Šimunović, V. (2016). 'UJEDNAČAVANJE RASPODJELE NAPREZANJA VIJČANOG SPOJA OPTIMIRANJEM GEOMETRIJE USPONA', Master's thesis, Josip Juraj Strossmayer University of Osijek, Mechanical Engineering Faculty in Slavonski Brod, accessed 28 November 2024, https://urn.nsk.hr/urn:nbn:hr:153:311126

Šimunović V. UJEDNAČAVANJE RASPODJELE NAPREZANJA VIJČANOG SPOJA OPTIMIRANJEM GEOMETRIJE USPONA [Master's thesis]. Slavonski Brod: Josip Juraj Strossmayer University of Osijek, Mechanical Engineering Faculty in Slavonski Brod; 2016 [cited 2024 November 28] Available at: https://urn.nsk.hr/urn:nbn:hr:153:311126

V. Šimunović, "UJEDNAČAVANJE RASPODJELE NAPREZANJA VIJČANOG SPOJA OPTIMIRANJEM GEOMETRIJE USPONA", Master's thesis, Josip Juraj Strossmayer University of Osijek, Mechanical Engineering Faculty in Slavonski Brod, Slavonski Brod, 2016. Available at: https://urn.nsk.hr/urn:nbn:hr:153:311126

Metadata
TitleUJEDNAČAVANJE RASPODJELE NAPREZANJA VIJČANOG SPOJA OPTIMIRANJEM GEOMETRIJE USPONA
Title (english)STRESS DISTRIBUTION EQUALISATION OF THE SCREW CONNECTION BY PITCH GEOMETRY OPTIMISATION
AuthorVjekoslav Šimunović
MentorDražan Kozak (mentor)
Committee memberDražan Kozak (član povjerenstva)
Committee memberŽeljko Ivandić (predsjednik povjerenstva)
Committee memberPejo Konjatić (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Mechanical Engineering Faculty in Slavonski Brod
Slavonski Brod
Defense date and country2016-09-22, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
U radu je analizirana i optimirana raspodjela naprezanja vijčanog spoja s ISO metričkim navojem. Prema dosadašnjim mjerenjima, koja su provedena u primjeni, pokazalo se da su profili zubova u vijčanom spoju nejednoliko opterećeni. Zadatkom je trebalo općenito prikazati vijčane spojeve, izraditi CAD parametarski model vijčanog spoja, analizirati raspodjelu naprezanja i optimirati ju promjenom, odnosno povećanjem uspona matice. Također potrebno je usporediti ponašanje klasičnog i optimiranog vijčanog spoja i izraditi tablicu optimiranih rješenja uspona. Analizom pomoću MKE prikazano je stanje naprezanja klasičnog vijčanog spoja na odabranom primjeru s navojem M16. Pokazalo se i potvrdilo klasično ponašanje vijčanih spojeva gdje prvi profili u kontaktu prenose većinu opterećenja dok su ostali znatno manje opterećeni. Pretpostavka je da se povećanjem uspona matice, odnosno postojanjem određene pozitivne razlike između uspona matice i vijka, ponašanje klasičnih vijčanih spojeva može poboljšati. To je učinjeno i dovelo je do smanjenja maksimalnog von Mises naprezanja za ugrubo 30%. Na taj način poboljšana je raspodjela naprezanja kao i dinamička izdržljivost vijčanih spojeva. Određivanjem korigirane veličine uspona za navoje opće primjene, prikazanih tablično u radu, da se zaključiti kako je metoda primjerenija za navoje većih nazivnih promjera. Veličine razlike uspona, koje su dosta male, rastu s porastom nazivnog promjera pa tako poprimaju veličine koje su lakše i jeftinije izvedive.
Abstract (english)
This paper presents an analysis and optimization of stress distribution on a screw connection with ISO metric thread. According to previous measurements, which were performed in the application, it was shown that the profile teeth at the joint are unequally burdened. The task is to generally show screw connections, make a CAD parametric model of the joint, analyze the distribution of stresses and optimize it by changing or more precisely, increasing the pitch of the nut. Also it is necessary to compare the behavior of the classical and optimized screw connection and create a table of optimized pitch solutions. The performed FEM analysis presented the stress state of the classic screw connection on the selected example of thread M16. It shows and confirms the classic behavior on bolted joints where the first profiles in contact transfers most of the load while other are much less burdened. The assumption is that the increase of nut pitch, or more specifically the existence of certain positive difference between the pitch of the nuts and bolt, the classical behavior of bolted joints can be improved. This was done and it led to a reduction of the maximum von Mises stress for roughly 30%. In this way, stress distribution and fatigue strength of bolted joints has improved. By specifying the corrected pitch size for threads of general application, presented in the work in tables, it is to be concluded that the method is more appropriate for larger nominal diameter of the threads. Sizes of pitch difference, which are quite small, ascent with the increase in nominal diameter and thus acquire sizes that are easier and cheaper to implement.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:153:311126
Study programmeTitle: Graduate Study Mechanical Engineering; specializations in: Design and Product Development, Manufacturing Logistics, Materials Engineering, Engineering Technologies, Power Engineering
Course: Design and Product Development
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2016-09-28 10:41:58