Thermoelastic Wheel-Rail Contact Problem for a Multi-Layer Structure
2014
artykuł naukowy
angielski
- thermoelastic rolling contact problem
- functionally graded materials
- quasistatic method
EN Wheel-rail thermoelastic contact problem is analysed and numerically solved in the paper. The surface of the rail is assumed to consist from layers having distinct constant material parameters and a functionally grad-ed material layer between. Thermal and mechanical properties of the graded layer are dependent on its depth rather than constant as it is considered in the literature. Numerous laboratory experiments indicate that graded materials layers or coatings covering the conventional steel body can reduce the magnitude of contact and/or thermal stresses as well as the noise and the rolling contact fatigue. The contact phenomenon includes friction as well as frictional heat generation and wear. Quasistatic numerical approach is used to solve numerically this contact problem. Numerical results are provided and discussed
41 - 48
CC BY (uznanie autorstwa)
publiczny
5