Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Experimental Observation of New Jumping Phenomena in the Pendulum System and Its Analytical Approach

진자 시스템에서의 새로운 도약 현상의 실험적 관측과 이론적 해석

  • 최동준 (한국과학기술원 대학원) ;
  • 정완섭 (한국표준과학연구원 음향진동연구실) ;
  • 김수현 (한국과학기술연구원기계공학과)
  • Published : 1996.08.01
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Abstract

This paper introduces a newly designed pendulum system that enables the more accurate boservation of dynamic behaviour arising from both horizontal and vertical(i.e. two dimension) excitation. First, experiments were carried out to examine the frequency responses of the devised pendulum system. Interestingly, experimental results for the three excitation angles of 22, 32 and 48 degree show 'new' jump phenomena. For the further understanding of these phenomena, experimental investigationhas been made to identify the equation of motion of the pendulum system from experimental data. This attempt has revealed that the viscous, coulomb and aerodynamic damping factors are involved in the equation of motion. By applying the Ritz averaging method to the equation, it becomes apparent that the jumping phenomena of the pendulum system in this work is more theoretically understood.

Keywords

References

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