Time Domain Identification of Structures Using Test Data

측정자료를 이용한 시간영역에서의 구조물의 동특성 추정

  • 한종석 (대림산업㈜ 기술연구소) ;
  • 정범석 (대림산업㈜ 기술연구소)
  • Published : 1996.10.01

Abstract

This paper describes the theory and verification of a method which utilizes the free decay response of a structure to determine its vibration parameters. The theory of the method is base on the formulation of a system matrix, contains information characterizing the complete set of modal parameters of the system, and its eigen-solution problem. The applicability of the method is verified by simulated free decay response data of a cantilever bean The method described was used to determined the parameters related to the first five generated modes of vibration of a cantilever beam. It involves two very close natural frequencies which could not be identified using a frequency sweep test(peak amplitude) because of interference between modes.

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