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FME Transactions
2013, vol. 41, br. 4, str. 298-304
jezik rada: engleski
vrsta rada: neklasifikovan

Procena korelacije između numeričkih i eksperimentalnih dinamičkih karakteristika rotornog bagera sa aspekta radnih uslova
Wroclaw University of Technology, Faculty of Mechanical Engineering, Wroclaw, Poland

e-adresa: damian.pietrusiak@pwr.wroc.pl

Sažetak

Rad predstavlja pokušaj autora da izvrše validaciju numeričkog modela na osnovu rezultata eksperimenata. Modalni kriterijum kvaliteta između numeričkog i eksperimentalnog modela je izabran kao merodavni faktor. Osim toga, ponovo su razmotrene promene frekvencija i stepena slobode koji najviše utiču na nivo korelacije. U većini slučajeva, numerički i eksperimentalni modeli ne uključuju uticaj radnog opterećenja na dinamičko ponašanje konstrukcije. Kod novog pristupa koji obuhvata radne uslove mora se ponovo razmotriti struktura numeričkog modela, jer stari pristup više nije validan. Modalna analiza izvršena na osnovu radnog opterećenja daje dobre rezultate, ali ne prikazuje stvarno stanje konstrukcije u radnim uslovima. U tom slučaju, imamo dva posebna sistema sa različitim dinamičkim karakteristikama. Određivanje modalnog modela korišćenjem radne modalne analize pruža informacije o objektu koji radi a koji je i predmet našeg interesovanja.

Ključne reči

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