Inertia damper
An inertia damper is a device that counters vibration using the effects of inertia and other forces and motion.[1] The damper does not negate the forces but either absorbs or redirects them by other means. For example, a large and heavy suspended body may be used to absorb several short-duration large forces, and to reapply those forces as a smaller force over a longer period.
Real-world applications and devices[edit]
Inertial compensators are also used in simulators or rides, making them more realistic by creating artificial sensations of acceleration and other movement. The Disneyland ride “Star Tours: The Adventure Continues” is a fair example of this principle.
There are many types of physical devices that can act as inertia dampers:
- Stockbridge damper - absorbs resonant wave motions in wire and support cables, seen on high voltage power lines.[2]
- Shock absorber - motion redirected as heating of viscous oil forced through a restrictive passage[3]
- Rotary damper - rotary motion is dissipated as heat in a highly viscous fluid or gel. May use a smooth surface rotating cylinder and a smooth surface stationary interior wall with fluid/gel between. For more forceful motion absorption and higher surface area, a paddle wheel or toothed gear is used, with a similarly ribbed or studded stationary interior wall to more forcefully grip the fluid/gel. [4][5]
References[edit]
- ↑ Ma, Ruisheng; Bi, Kaiming; Hao, Hong (September 2021). "Inerter-based structural vibration control: A state-of-the-art review". Engineering Structures. 243: 112655. doi:10.1016/j.engstruct.2021.112655.
- ↑ Markiewicz, M. (29 November 1995), "Optimum dynamic characteristics of Stockbridge dampers for dead-end spans", Journal of Sound and Vibration, 188 (2): 243–256, Bibcode:1995JSV...188..243M, doi:10.1006/jsvi.1995.0589
- ↑ Dixon, John C. (2008). The shock absorber handbook. Wiley-professional engineering publishing series (2. ed., repr ed.). Chichester: Wiley. ISBN 978-0-470-51020-9. Search this book on
- ↑ Lin Engineering: http://www.linengineering.com/line/contents/stepmotors/Nema17_Damper.aspx Archived 2011-05-02 at the Wayback Machine
- ↑ Phytron: ftp://ftp.phytron.de/phytron-usa/equipment/damper/dmp-us.pdf[permanent dead link]
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