TY - JOUR

T1 - Crack Propagation Analysis of Compression Loaded Rolling Elements

AU - Dlhý, Pavol

AU - Poduska, Jan

AU - Berer, Michael

AU - Gosch, Anja

AU - Slavik, Ondrej

AU - Nahlik, Lubos

AU - Hutař, Pavel

N1 - Publisher Copyright: © 2021 by the authors.

PY - 2021/5/19

Y1 - 2021/5/19

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85107594262&partnerID=8YFLogxK

U2 - 10.3390/ma14102656

DO - 10.3390/ma14102656

M3 - Article

VL - 14.2021

JO - Materials

JF - Materials

SN - 1996-1944

IS - 10

M1 - 2656

ER -