Dynamic stabilization of a bistable suspension system attached to a flexible host structure for operational safety enhancement

Kai Yang, R. L. Harne, K. W. Wang, Hai Huang

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

In engineering applications, a suspension system may be attached to a flexible host structure, e.g. spacecraft truss, to provide vibration isolation for sensitive instrumentation, where the suspension and host structure dynamics are strongly coupled. For linear suspensions, a resonance normally occurs adjacent to the roll-off frequency band, which significantly and detrimentally amplifies vibration transmission. To avoid the adverse resonance for operational safety enhancement, this research proposes a nonlinear bistable suspension and evaluates its performance when attached to a flexible host structure. Dynamic models of the bistable and comparable linear suspensions attached to the host structure are formulated, and steady-state responses are predicted using analytical and numerical methods. Results show that the bistable suspension can eliminate the harmful resonance via a dynamic stabilization phenomenon, and simultaneously retains the favorable isolation performance in the roll-off bandwidth as compared to the linear suspension. Series of experimental investigations support the analytical and numerical findings and help define design guidelines for operational safety improvement.

Original languageEnglish (US)
Pages (from-to)6651-6661
Number of pages11
JournalJournal of Sound and Vibration
Volume333
Issue number24
DOIs
StatePublished - Dec 2 2014

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Dynamic stabilization of a bistable suspension system attached to a flexible host structure for operational safety enhancement'. Together they form a unique fingerprint.

Cite this