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On stiffness and damping of vibro-impact dynamics of backlash

Ruderman, Michael
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URI
https://hdl.handle.net/11250/2991632
Date
2021
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  • Publikasjoner fra CRIStin [2350]
  • Scientific Publications in Engineering Sciences [485]
Original version
Ruderman, M. (2021) On stiffness and damping of vibro-impact dynamics of backlash 2021 IEEE 30th International Symposium on Industrial Electronics (ISIE), 2021, pp. 1-4   https://doi.org/10.1109/ISIE45552.2021.9576274
Abstract
We consider the instantaneous stiffness and damping of the vibro-impact in a backlash pair. Opposed to the existing and mostly used models of the backlash, we address the problem of contact and separation, and the associated force propagation within a mechanical pair, from a viewpoint of the vibro-impact dynamics. We discuss the impact forces with the coefficient of restitution as a principal factor which shapes the transient backlash response.We show that a common approach to modeling the backlash by means of a dead-zone in a restoring force is unsuitable for correctly capturing the mechanical impact. We exemplary demonstrate a qualitative accord between an experimental backlash response and the postulated modeling approach. Backlash related energy losses by damping of vibro-impact system are also addressed in brief.
Publisher
IEEE
Copyright
© 2021 The Author(s)

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