한국생산제조학회지 (Journal of the Korean Society of Manufacturing Technology Engineers)

  • 제20권1호
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  • Pages.40-46
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  • 2011
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  • 2508-5093(pISSN)
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  • 2508-5107(eISSN)
한국생산제조학회 (The Korean Society of Manufacturing Technology Engineers)
권호 표지

초고속 구동축의 지지 조건에 따른 안정성 분석

Stability Analysis of High-speed Driveshafts under the Variation of the Support Conditions

  • 신응수 (충북대학교 공과대학 기계공학부)
  • 투고 : 2011.01.06
  • 심사 : 2011.01.22
  • 발행 : 2011.02.15
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초록

This paper is to investigate the effects of the asymmetrical support stiffness on the stability of a supercritical driveshaft with asymmetrical shaft stiffness and anisotropic bearings. The equations of motion is derived for a system including a rigid disk, a massless flexible asymmetric shaft, anisotropic bearings and a support beam. The Floquet theory is applied to perform the stability analysis with the variation of the support stiffness, the shaft asymmetry, the shaft damping and the shaft speed. The results show that the asymmetric support stiffness is closely related to the stability caused by primary resonance as well as the supercritical operation. First, the stiffness variation can stabilize the system around primary resonance by weakening the parametric resonance from the shaft asymmetry. Second, it also improve the stability characteristics at a supercritical operation when the support stiffness is not so high relative to the shaft stiffness.

키워드

참고문헌

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