Non-linear modal interactions in a suspension rope system with time-varying length

Rodanthi Samamaliki-Simpson, Stefan Kaczmarczyk, Philip Picton, Scott J Turner

Research output: Contribution to JournalArticlepeer-review

Abstract

This paper focuses on the investigation of the autoparametric coupling effects and modal interactions in a suspension rope system with a time varying length. Equations of motion of a multi-degree-of-freedom discrete, non-stationary and non-linear model are presented and are used to analyze the dynamic response of an elevator suspension rope system under resonance conditions. The equations of motion involve quadratic and cubic non-linear terms which are responsible for the modal interaction between the lateral and longitudinal oscillations of the rope and the car motions. The model takes into account the periodic excitations caused by motion of the host structure. The results confirm that adverse responses may arise and internal autoparametric resonance phenomena may occur
Original languageEnglish
JournalApplied Mechanics and Materials
Volume5-6
DOIs
Publication statusPublished - 1 Jan 2006

Keywords

  • Suspension rope
  • non-linear system
  • time-varying length
  • non-linear coupling
  • modal interactions
  • autoparametric resonance

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