서지주요정보
등가 에너지 보상을 통한 유사-동적 실험기법 개선 = The improvement of pseudo-dynamic test by using equivalent energy compensation
서명 / 저자 등가 에너지 보상을 통한 유사-동적 실험기법 개선 = The improvement of pseudo-dynamic test by using equivalent energy compensation / 이상순.
저자명 이상순 ; Lee, Sang-Soon
발행사항 [대전 : 한국과학기술원, 1992].
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소장정보

등록번호

8002944

소장위치/청구기호

학술문화관(문화관) 보존서고

MCIE 92012

SMS전송

도서상태

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반납예정일

초록정보

The pseudo-dynamic test method combines well-established analytical techniques in structural dynamics with experimental testing. It is especially efficient for testing structures that are large, heavy or strong to be tested on the shaking tables. The objective of this study is to improve the numerical algorithm used in the Pseudo-dynamic test and investigate the major sourses of experimental errors. Since experimental errors are introduced into numerical computations through displacement control and restoring force feedback, significant cumulative errors can be introduced in pseudo-dynamic test results. Particularly Coulomb damping due to friction between a test structure and hydraulic actuators can influence the restoring forces developed by structural deformations. As a results, energy dissipation phenomenon is presented and test results are deteriorated. In this study, efficient procedure to mitigate these error effects, which is divided into three major parts, is proposed. In the first part, the stability, accuracy and error propagation characteristics of numerical integration algorithm are investigated and appropriate integration time steps to suppress the growth of experimental errors are selected. In the second part, dry-friction and other kinds of errors are detected from linear elastic free-vibration tests, and these errors are removed with improvement of test apparatus and with caution. In the last part, the proposed numerical algorithm, which includes equivalent energy compensation procedure to correct restoring forces distorted by experimental errors, is used to get structural behaviors. For verifing the reliability and capacity of the pseudo-dynamic test, test results obtained in this study are correlated with analytical results and shaking table test results. The results of this study indicate that some systematic experimental errors are detrimental to pseudo-dynamic test and induce significant energy effects. However, it is shown that reliable test results can be obtained if adequate experimental equipment and technique, and appropriate numerical method for mitigating error propagation effects are used.

서지기타정보

서지기타정보
청구기호 {MCIE 92012
형태사항 vi, 46 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Sang-Soon Lee
지도교수의 한글표기 : 이동근
지도교수의 영문표기 : Dong-Guen Lee
학위논문 학위논문(석사) - 한국과학기술원 : 토목공학과,
서지주기 참고문헌 : p. 45-46
주제 Materials testing labortories.
수치 해법. --과학기술용어시소러스
재료 시험. --과학기술용어시소러스
Numerical analysis.
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