Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Analysis of the Dynamic Behavior and Characteristics of the CNG Compressor Considering Bearing Characteristics

베어링 특성을 고려한 CNG 압축기의 동적 거동 및 동특성 해석

  • Kim, Tae-Jong (Research Institute of Mechanical Technology, Pusan National University)
  • 김태종 (부산대학교 기계기술연구소)
  • Published : 2006.12.31
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Abstract

In this study, a dynamic behavior of rotor-bearing system used in CNG compressor has been investigated using the combined methodologies of finite elements and transfer matrices. The finite element is formulated including the field element for a shaft section and the point element for roller bearings. The Houbolt method is used to consider the time march for the integration of the system equations. The transient whirl response of rotating shaft supported on roller bearings is obtained, considering compression forces and unbalance forces at eccentric crank-pin part. And, the steady state displacements of the rotor are compared with a variation in stiffness coefficient of roller bearings. Results show that the loci of crankshaft considering unbalance forces and external compression forces are more severe in whirl motion than with only unbalance forces.

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References

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