The In-Plane Steady-State Response Of A Ring In Relative Motion To A Constant Load

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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 languageEnglish
Title of host publicationEURODYN 2020 XI International Conference on Structural Dynamics
Subtitle of host publicationAthens, Greece, 23–26 November 2020
EditorsM. Papadrakakis, M. Fragiadakis, C. Papadimitriou
PublisherEuropean Association for Structural Dynamics (EASD)
Pages2631-2637
Number of pages7
Volume2
DOIs
Publication statusPublished - 2020
EventEURODYN 2020: XI International Conference on Structural Dynamics - Athens, Greece
Duration: 23 Nov 201926 Nov 2020
https://eurodyn2020.org/

Publication series

NameEASD Procedia
ISSN (Electronic)2311-9020

Conference

ConferenceEURODYN 2020
CountryGreece
CityAthens
Period23/11/1926/11/20
Internet address

Keywords

  • Rotating ring
  • Moving load
  • High-order model
  • Steady-state response
  • Resonance

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