Impulzne obremenitve v vibracijskem utrujanju : doktorsko delo

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Impulzne obremenitve v vibracijskem utrujanju : doktorsko delo

Ogrinec, Primož

V delu je predstavljena in eksperimentalno primerjana metoda izračuna poškodovanosti impulznih in harmonskih obremenitev, ki prikazuje, da sta načina obremenjevanja ekvivalentna. Za vsako harmonsko ... obremenitev namreč lahko definiramo serijo impulznih obremenitev, ki generirajo enako poškodbo. Poleg analitičnih izrazov je bil razvit tudi eksperimentalni postopek, ki omogoča določevanje koeficientov Wöhlerjeve krivulje za oba obremenitvena primera. V okviru te naloge je bila razvita tudi metodologija ocene poškodbe s spektralnimi števnimi metodami za impulzne obremenitve, ki so v osnovi nestacionarne in ne-Gaussove, kar presega osnovne predpostavke spektralnih števnih metod. Napovedi dobe trajanja v frekvenčni domeni za tak tip obremenitve napovedujejo bistveno predolge dobe trajanja. Predlagan korekcijski faktor napovedi dobe trajanja za impulzne obremenitve primerja oceno poškodovanosti z dvema števnima metodama v frekvenčni domeni, ter padavinsko števno metodo in ga je mogoče analitično določiti za dan dinamski sistem. Vpliv impulzov in napovedovanje dobe trajanja s pomočjo korekcijskega faktorja je bil tudi eksperimentalno validiran.

Type of material - dissertation ; adult, serious

Publication and manufacture - Ljubljana : [P. Ogrinec], 2024

Language - slovenian

COBISS.SI-ID - 188959491

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GS II 751870 glavno skladišče	available - reading room

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Year	Impact factor		Edition		Category		Classification
Year	JCR	SNIP	JCR	SNIP	JCR	SNIP	JCR	SNIP

Links to authors' personal bibliographies	Links to information on researchers in the SICRIS system
Ogrinec, Primož	38407
Slavič, Janko, 1978-	23010
Boltežar, Miha	02034

Source: Personal bibliographies and: SICRIS

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