Crack Propagation Analysis of Compression Loaded Rolling Elements
| Autor: | Luboš Náhlík, Ondrej Slávik, Jan Poduška, Anja Gosch, Michael Berer, Pavel Hutař, Pavol Dlhý |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science finite element method crack propagation 02 engineering and technology stress intensity factor Rotation Article law.invention 0203 mechanical engineering law thermoplastic material General Materials Science Stress intensity factor Microscopy QC120-168.85 Bearing (mechanical) QH201-278.5 Fracture mechanics Mechanics Engineering (General). Civil engineering (General) 021001 nanoscience & nanotechnology Compression (physics) Finite element method TK1-9971 Shear (sheet metal) 020303 mechanical engineering & transports Descriptive and experimental mechanics fracture mechanics Void (composites) Electrical engineering. Electronics. Nuclear engineering TA1-2040 0210 nano-technology bearing element |
| Zdroj: | Materials . 2021, vol. 14, issue 10, p. 2656-1-2656-24. Materials, Vol 14, Iss 2656, p 2656 (2021) Materials Volume 14 Issue 10 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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