Versatile mass excited impact oscillator

Marian Wiercigroch*, Stephane Kovacs, Shun Zhong, Dimitri Costa, Vahid Vaziri, Marcin Kapitaniak, Ekaterina Pavlovskaia

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Citation (Scopus)
6 Downloads (Pure)

Abstract

This paper presents the design and the initial experimental results of a novel impact oscillator rig developed by the Centre of Applied Dynamic Research at the University of Aberdeen. In this rig, the excitation force is generated electromagnetically and it acts directly on the mass in contrast to the most of the experimental set-ups where the excitation passes through the structure. This significantly enhances flexibility of the system allowing to observe subtle phenomena. The evolution of the design from an initial concept to the finalised rig is discussed in details where a special attention is paid to the instrumentation and parameter identification which are important for the mathematical modelling. The initial experimental results demonstrate potentials of this rig to study fundamental impact phenomena, which have been observed in various engineering systems. They also indicate that this new rig can be a good platform for investigating nonlinear control methods.
Original languageEnglish
Pages (from-to)323-339
Number of pages17
JournalNonlinear Dynamics
Volume99
Early online date10 Dec 2019
DOIs
Publication statusPublished - 2020

Keywords

  • oscillator
  • impacts
  • vibration
  • nonlinear dynamics
  • experiments
  • design
  • Design
  • Nonlinear dynamics
  • Impacts
  • Vibration
  • Oscillator
  • Experiments
  • CHAOS CONTROL
  • VIBRATIONS
  • PIECEWISE-LINEAR OSCILLATOR
  • CONSTRAINT
  • BEAM
  • JEFFCOTT ROTOR
  • TRANSITION
  • DYNAMICS
  • BIFURCATION-ANALYSIS
  • GRAZING-INCIDENCE

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