Crack Propagation Analysis of Compression Loaded Rolling Elements

0542759 - ÚFM 2022 RIV CH eng J - Článek v odborném periodiku
Dlhý, Pavol - Poduška, Jan - Berer, M. - Gosch, A. - Slávik, Ondrej - Náhlík, Luboš - Hutař, Pavel
Crack Propagation Analysis of Compression Loaded Rolling Elements.
Materials. Roč. 14, č. 10 (2021), s. 2656. E-ISSN 1996-1944
Institucionální podpora: RVO:68081723
Klíčová slova: fracture mechanics * crack propagation * stress intensity factor * thermoplastic material
Obor OECD: Audio engineering, reliability analysis
Impakt faktor: 3.748, rok: 2021
Způsob publikování: Open access
https://www.mdpi.com/1996-1944/14/10/2656

The problem of crack propagation from internal defects in thermoplastic cylindrical bearing
elements is addressed in this paper. The crack propagation in these elements takes place under
mixed-mode conditions—i.e., all three possible loading modes (tensile opening mode I and shear
opening modes II and III) of the crack are combined together. Moreover, their mutual relation changes
during the rotation of the element. The dependency of the stress intensity factors on the crack length
was described by general parametric equations. The model was then modified by adding a void
to simulate the presence of a manufacturing defect. It was found that the influence of the void on
the stress intensity factor values is quite high, but it fades with crack propagating further from the
void. The effect of the friction between the crack faces was find negligible on stress intensity factor
values. The results presented in this paper can be directly used for the calculation of bearing elements
lifetime without complicated finite element simulations
Trvalý link: http://hdl.handle.net/11104/0320809