Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Identification of Connection Stiffnesses of Bolted Structures Using a Substructural Sensitvitity Analysis

부분구조 기반 민감도 해석을 이용한 볼트겹합 구조물의 결합강성 추정

  • 서세영 (국민대학교 자동차공학전문대학원) ;
  • 방극호 (대림대학 건축설비과) ;
  • 김찬묵 (국민대학교 자동차공학전문대학원) ;
  • 이두호 (동의대학교 기계/산업시스템공학부)
  • Published : 2001.10.01
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Abstract

The identification of connection stiffnesses of bolted structures is presented using FRT-based substructural sensitivity analysis. The substructural design sensitivity formula is derived and plugged into the optimization module of MATLAB to identify connection stiffnesses of an air-conditioner compressor or passenger Car. The air-conditioner composed of a compressor and a bracket, is analysed by using the FRT-based substructural(FBS) method to obtain FTRs an FE model is generated for the bracket, and the impact hammer test is performed for the compressor, Obtained FRTs are combined to calculate the reaction force at the connection point and the system response. By minimizing the difference between a target FRT and calculated one the connection element properties of the air-conditioner syste are identified It is shown that the proposed identification method is effective for a real problem.

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References

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