A nonlinear state-dependent model for vibrations excited by roughness in rolling contacts
| Autor: | Stefan Björklund, Svante Finnveden, Oskar E. Lundberg, Ines Lopez Arteaga, Mikael Pärssinen |
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| Rok vydání: | 2015 |
| Předmět: |
Engineering
Acoustics and Ultrasonics business.industry Mechanical Engineering Stiffness Surface finish Structural engineering Physics::Classical Physics Condensed Matter Physics Vibration Vehicle engineering Nonlinear system Mechanics of Materials Excited state medicine Point (geometry) medicine.symptom business Beam (structure) |
| Zdroj: | Journal of Sound and Vibration. 345:197-213 |
| ISSN: | 0022-460X |
| DOI: | 10.1016/j.jsv.2015.02.010 |
| Popis: | A state-dependent method to model contact nonlinearities in rolling contacts is proposed. By pre-calculation of contact stiffness and contact filters as functions of vertical relative displacement, a computationally efficient modelling approach based on a moving point force description is developed. Simulations using the state-dependent model have been analysed by comparison with measurements. Results from the investigated case – consisting of a steel ball rolling over a steel beam having two different degrees of roughness – show good agreement between nonlinear simulations and measured beam vibrations. The promising results obtained with the proposed method are potentially applicable to wheel–rail interaction and rolling element bearings. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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