Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Dynamic Analysis of Asymmetric Bending-torsion Coupled Beam Using Exact Dynamic Elements

엄밀한 동적 요소를 이용한 비대칭 굽힘-비틀림 연성 보의 동적 해석

  • Hong, Seong-Uk (Dept.of Machanical Engineering, Kumoh National Institute of Technology) ;
  • Gang, Byeong-Sik (Graduate School of Kumoh National Institute of Technology) ;
  • Jo, Yong-Ju (Graduate School of Kumoh National Institute of Technology)
  • 홍성욱 (금오공과대학교 기계공학부) ;
  • 강병식 (금오공과대학교 대학원) ;
  • 조용주 (금오공과대학교 대학원)
  • Published : 2001.08.01
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Abstract

Although asymmetric beams are widely used in industry, few research results are available on the dynamic modeling and analysis of structure including asymmetric beams. Asymmetric beams cause complicated vibration phenomena due to the inherent bending-torsion coupled vibration. In this paper, an exact dynamic element matrix for the bending-torsion coupled vibration of asymmetric beam is derived. The application of the derived exact dynamic element matrix is demonstrated by some illustrative examples wherein the natural frequencies by the proposed modeling method are compared with those available in the literature. Another numerical example is also illustrated which deals with a general beam with joints. The numerical study shows that the exact dynamic element model is useful for the dynamic analysis of asymmetric bending-torsion coupled beams.

Keywords

References

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