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Validation of linear damage rules using random loading
ID Franko, Mitja (Avtor), ID Sedlaček, Marko (Avtor), ID Podgornik, Bojan (Avtor), ID Nagode, Marko (Avtor)

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Izvleček
Fatigue damage is a parameter which plays an important role in lifetime and reliability predictions of randomly loaded structures. In this paper, four different forms of the Miner linear accumulation damage rule are examined. They are used to compare observed experimental damage and the results of numerical simulations for both uniaxial and multiaxial fatigue. First, critical fatigue damage values for all forms of the Miner accumulation damage rule are calculated for uniaxial cases. Based on the results presented in this paper, it has been established that for high strength materials the critical damage value is around 0.3. These results are then applied to the multiaxial cases. The multiaxiality is taken into account using either the signed von Mises or critical plane method. Finally, the fatigue fracture surface has been calculated and compared to the experimental pattern of fatigue fracture. The results show that the fatigue fracture surface determined by the numerical simulation is comparable to the fatigue fracture observed experimentally.

Jezik:Angleški jezik
Ključne besede:damages, multiaxial, fatigue, critical plane, signed von Mises
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Status publikacije:Objavljeno
Različica publikacije:Recenzirani rokopis
Leto izida:2017
Št. strani:Str. 463-479
Številčenje:Vol. 26, iss. 3
PID:20.500.12556/RUL-105273 Povezava se odpre v novem oknu
UDK:531(045)
ISSN pri članku:1056-7895
DOI:10.1177/1056789515605881 Povezava se odpre v novem oknu
COBISS.SI-ID:14219547 Povezava se odpre v novem oknu
Datum objave v RUL:19.11.2018
Število ogledov:1167
Število prenosov:832
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Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:poškodbe, večosnost, utrujanje, kritična ravnina

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0182
Naslov:Razvojna vrednotenja

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