Computational model for the analysis of bending fatigue in gears

Janez Kramberger (Avtor), Matjaž Šraml (Avtor), Srečko Glodež (Avtor), Jože Flašker (Avtor), Iztok Potrč (Avtor)

Povzetek

A computational model for the determination of service life of gears with regard to bending fatigue in a gear tooth root is presented. The fatigue process leading to tooth breakage is divided into crack initiation (Ni) and crack propagation (Np) periods, where the complete service life is defined as N = Ni + Np. The strain-life method in the framework of the FEM method has been used to determine the number of stress cycles Ni required for fatigue crack initiation. Gear tooth crack propagation was simulated using a FEM method based computer program which uses principles of linear elastic fracture mechanics. The Paris equation is then used for the further simulation of the fatigue crack growth. The presented model is used to determine the service life of a real spur gear made from through-hardened steel 42CrMo4.

Ključne besede

strojni elementi;zobniška gonila;utrujenost;upogib;življenjska doba;nastanek utrujenostne razpoke;širjenje utrujenostne razpoke;računalniška simulacija;numerično modeliranje;lomna mehanika;machine elements;gears;bending fatigue;service life;fatigue crack initiation;fatigue crack propagation;computational simulations;numerical modelling;fracture mechanics;

Podatki

Jezik:	Angleški jezik
Leto izida:	2004
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UM FS - Fakulteta za strojništvo
UDK:	621.833:539.388.1:519.61/.64
COBISS:	9036310
ISSN:	0045-7949
Št. ogledov:	2680
Št. prenosov:	82
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarne ključne besede:	strojni elementi;zobniška gonila;utrujenost;upogib;življenjska doba;nastanek utrujenostne razpoke;širjenje utrujenostne razpoke;računalniška simulacija;numerično modeliranje;lomna mehanika;
URN:	URN:SI:UM:
Strani:	str. 2261-2269
Letnik:	82
Zvezek:	ǂiss. ǂ23/26
Čas izdaje:	2004
ID:	8718715