한국정밀공학회:학술대회논문집 (Proceedings of the Korean Society of Precision Engineering Conference)
- 한국정밀공학회 2004년도 춘계학술대회 논문요약집
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- Pages.188-188
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- 2004
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- 2005-8446(pISSN)
CORRECTION TECHNIQUES OF MASS-LOADING EFFECTS OF TRANSDUCERS IN MODAL TESTING
- Guoyi Ji (Institute of Vibration Engineering, Nanjing University) ;
- Chung, Won-Jee (Machine Tool Research Center, Changwon National University) ;
- Lee, Choon-Man (Machine Tool Research Center, Changwon National University) ;
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Park, Dong-Keun
(Machine Tool Research Center, Changwon National University)
- 발행 : 2004.05.01
초록
Modal testing and analysis is a primary tool for obtaining reliable models to represent the dynamics of structures. When a structure is tested in order to collect measured data in modal testing, we usually use attached accelerometers to pick up the response data. Change in modal parameters due to the mass of transducers in modal testing is a well-known problem. The disadvantages are the shift of measured modal frequencies and the change of modal shapes, which can cause inaccurate results in further analysis. Modal analysis methods in frequency domain are based on a set of measured frequency response functions(FRF).(omitted)