Computational model for the analysis of bending fatigue in gears

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

Abstract

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.

Keywords

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;

Data

Language:	English
Year of publishing:	2004
Typology:	1.01 - Original Scientific Article
Organization:	UM FS - Faculty of Mechanical Engineering
UDC:	621.833:539.388.1:519.61/.64
COBISS:	9036310
ISSN:	0045-7949
Views:	2680
Downloads:	82
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary keywords:	strojni elementi;zobniška gonila;utrujenost;upogib;življenjska doba;nastanek utrujenostne razpoke;širjenje utrujenostne razpoke;računalniška simulacija;numerično modeliranje;lomna mehanika;
URN:	URN:SI:UM:
Pages:	str. 2261-2269
Volume:	82
Issue:	ǂiss. ǂ23/26
Chronology:	2004
ID:	8718715