Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)
- Volume 3 Issue 2
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- Pages.147-154
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- 1999
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- 2234-6937(pISSN)
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- 2287-6979(eISSN)
Determination of Vibration Parameters Using The Improved Time Domain Modal Identification Algorithm
개선된 시간영역 해석기법에 의한 동특성 추정
Abstract
A new approach to conducting the vibration parameters identification algorithm is proposed. The approach employs the concept of modal amplitude ratio implemented in a mode shape estimation. The accuracy of the improved Ibrahim Time Domain identification algorithm in extracting structural modal parameters from free response functions has been studied using computer simulated data for 9 stations on the two-span continuous beam. Simulated responses from the lumped and distributed parameter system demonstrate that this algorithm produces excellent results, even in the 300% noise response.