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Vpliv kontaktnih pogojev in prednapetja na lastno dinamiko sestava zaganjalnika : zaključna naloga Razvojno raziskovalnega programa I. stopnje StrojništvoŠulin, ArlenaZaganjalnik je ključna komponenta za zagon avtomobilskih motorjev. Vibracije, ki so stalno prisotne pri obratovanju motorja, se prenašajo tudi na zaganjalnik in posledično vplivajo na njegovo ... delovanje. Poznavanje dinamskih lastnosti je tako ključno za določitev hitrosti motorja, pri katerih pride zaganjalnik v resonanco, za optimizacijo geometrije in posledično zagotavljanje funkcije. Pri modeliranju problema se srečamo z vprašanjem, kako definirati kontakte med sestavnimi deli in nadomestiti model vzmeti s silo prednapetja, da se čim bolj približamo realnemu stanju. V okviru zaključne naloge smo za poenostavitev simulacije predpostavili, da so vsi sestavni deli med sabo zlepljeni. Vijačno vzmet, ki drži krtačko v stiku s komutatorjem smo modelirali kot silo prednapetja, pri čemer smo obravnavali tako stanje pred in po obrabi krtačk. Izvedena je bila modelna analiza za 4 različne modele, ki se razlikujejo v prisotnosti vpliva komutatorja, sile prednapetja in obrabe krtačk. Zabeleženih je bilo prvih deset neničelnih lastnih frekvenc vsakega modela in pripadajoče lastne oblike. Ugotovili smo, da ima na izračunane rezultate največji vpliv kontaktna togost med sestavnimi deli. Določili smo sestavne dele, na katerih se pojavijo največe deformacije pri določeni lastni frekvenci in njihove vrednosti.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [A. Šulin], 2020Language - slovenianCOBISS.SI-ID - 21916163
Author
Šulin, Arlena
Other authors
Čepon, Gregor
Topics
diplomske naloge |
zaganjalnik |
modalna analiza |
lastne frekvence |
komutatorji |
prednapetje |
obraba krtačk |
thesis |
car starter |
modal analysis |
natural frequencies |
commutators |
prestress |
brush wear
Library/institution |
City | Acronym | For loan | Other holdings |
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Faculty of Mechanical Engineering, Ljubljana | Ljubljana | FSLJ |
reading room 1 cop.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Šulin, Arlena | |
Čepon, Gregor | 25798 |
Source: Personal bibliographies
and: SICRIS
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