Srečko Glodež (Avtor), Matjaž Šraml (Avtor), Janez Kramberger (Avtor)

Povzetek

A computational model for determination of service life of gears in regard to bending fatigue in a gear tooth root is presented. The fatique process leading to tooth breakage is divided into crack initiation and crack propagation period. The strain-life method in the framework of the FEM-methods has been used to determine the number of stress cycles Ni required for the fatique crack initiation, where it is assumed that the crack is initiated at the point of the largest stresses in a gear tooth root. The simple Paris equations is then used for the further simulation of the fatigue crack growth. The functional relationship between the stress intensity factor and crack length K=f(a), which is needed for determination ofthe required number of loading cycles Np for a crack propagation from the initial to the critical length, is obtained using displacement correlation method in the framework of the FEM-method. The total number of stress cycles N for the final failure to occur is then a sum of Ni and Np. The model is used for determination of service life of real spur gear made from through-hardened steel 42CrMo4, where required material parameters have been determined previously by the appropriate test specimens.

Ključne besede

strojni elementi;utrujanje;rast utrujenostne razpoke;numerično modeliranje;zobniška gonila;življenjska doba;machine elements;fatigue;fatigue crack growth;numerical modelling;gears;service life;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UM FS - Fakulteta za strojništvo
UDK: 621.833:539.388.1:519.61/.64
COBISS: 7278102 Povezava se bo odprla v novem oknu
ISSN: 0142-1123
Št. ogledov: 1760
Št. prenosov: 104
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarne ključne besede: strojni elementi;utrujanje;rast utrujenostne razpoke;numerično modeliranje;zobniška gonila;življenjska doba;
URN: URN:SI:UM:
Strani: str. 1013-1020
Letnik: ǂVol. ǂ24
Zvezek: ǂiss. ǂ10
Čas izdaje: 2002
ID: 8718997