Abstract
Ring-like structures are very commonly used in civil, mechanical and aerospace engineering. Typical examples of such structures are components in turbomachinery, compliant gears, conventional pneumatic tires and more recent non-pneumatic tires, to name a few. In this paper, a ring on elastic foundation is considered. The foundation, modelled as distributed springs, connects the inner surface of the ring to an immovable axis. Focus is placed on the in-plane response of the ring subjected to in-plane load only. A high-order ring model, which accounts for the through-thickness variations of displacements is adopted for the study. Two loading situations of a ring structure are of interest in practice: (i) a stationary ring subjected to a circumferentially moving constant load; and (ii) a rotating ring under a stationary constant load. For the first situation, it is well-known that resonances occur when the rotational speeds of the load satisfy certain conditions. In a series of recent investigations, such resonance speeds have been predicted for a rotating ring subjected to a stationary load. In this paper the case of the rotating ring under a stationary constant load and that of a stationary ring subjected to a moving load are compared in terms of their resonance speeds, as well as the steady-state responses for various parameters. It is found that these two cases are distinguishable even for system parameters which result at similar critical speeds.
Original language | English |
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Title of host publication | EURODYN 2020 XI International Conference on Structural Dynamics |
Subtitle of host publication | Athens, Greece, 23–26 November 2020 |
Editors | M. Papadrakakis, M. Fragiadakis, C. Papadimitriou |
Publisher | European Association for Structural Dynamics (EASD) |
Pages | 2631-2637 |
Number of pages | 7 |
Volume | 2 |
DOIs | |
Publication status | Published - 2020 |
Event | EURODYN 2020: XI International Conference on Structural Dynamics - Athens, Greece Duration: 23 Nov 2019 → 26 Nov 2020 https://eurodyn2020.org/ |
Publication series
Name | EASD Procedia |
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ISSN (Electronic) | 2311-9020 |
Conference
Conference | EURODYN 2020 |
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Country/Territory | Greece |
City | Athens |
Period | 23/11/19 → 26/11/20 |
Internet address |
Keywords
- Rotating ring
- Moving load
- High-order model
- Steady-state response
- Resonance