Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Stress and Vibration Analysis with respect to the change of the Shape of Screw Blade and the Hole for Centrifuge

원심분리기용 스크류의 블레이드 및 원공형상변화에 따른 응력 및 진동해석

  • 한근조 (동아대학교 기계공학과) ;
  • 이성욱 (동아대학교 대학원 기계공학과) ;
  • 심재준 (동아대학교 대학원 기계공학과) ;
  • 한동섭 (동아대학교 대학원 기계공학과) ;
  • 안찬우 (동아대학교 기계공학과) ;
  • 서용권 (동아대학교 기계공학과) ;
  • 김태형 (경남정보대학 기계자동차산업학부)
  • Published : 2003.09.01
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Abstract

In this study, we carried out the finite element analysis for the screw of centrifuge that is the weakest part of the centrifuge for sewage management. Centrifugal force caused by rotation with velocity of 4000rpm was applied at the screw. Structural analysis was done with respect to the change of the ratio of blade pitch($R_P$), shaft diameter($R_D$) and extended hole($R_E$). When the area of circular hole is equal to that of extended holes, maximum equivalent stresses in the screw with circular and extended circular hole were compared. And then natural frequency analysis was executed for the same model. Three mode shapes were used to explain the vibration characteristics of each screw. Convergence study was accomplished fur more accurate results.

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References

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