- Volume 14 Issue 3
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Experimental and Numerical Investigation of Sliding Response of Unconstrained Objects to Base Excitations
바닥진동에 의한 비구속 물체의 거동파악 실험과 수치해석 전산프로그램의 개발
- 이상호 (단국대학교 토목환경공학과)
- Received : 2013.09.12
- Accepted : 2013.12.24
- Published : 2014.03.28
Safety related devices unconstrained temporally in the process of operation of nuclear power plants could be damaged by the sliding during seismic activity. In this study sliding response of unconstrained objects to the base excitations is studied experimentally and analytically. In experiments static and dynamic tests to determine the coefficient of friction and the shaking table experiments to verify the sliding response of the analytic results were conducted. Numerical solutions by solving the nonlinear differential equations of motion governing sliding were found by the computer program using the step by step acceleration method. The exact solutions of the sliding response to the simple forms of base excitations were found to verify the computer program developed in this study. Relative displacement envelopes were suggested as a colliding criteria of the unconstrained objects.
Sliding;Unconstrained Sysrem;Shaking Table;Coefficient of Friction
- R. Tinawi and P. Leger, "Seismic Safety of Gravity Dams," J. of Structural Engr., Vol.125, No.4, pp.518-529, 2000.
- N. Mostaghel, M. hejazi, and J. Tanbakuchi, "Response of Sliding structures to Harmonic Support Motion," Earthquake Engineering and Structural Dynamics, Vol.11, pp.355-366, 1983. https://doi.org/10.1002/eqe.4290110305
- A. Pompei, A. Scalia, and M. A. Sumbatyan, "Dynamics of Rigid Block due to Horizontal Ground Motion," J. of Engineering Mechanics, Vol.124, No.7, pp.713-717, July, 1998. https://doi.org/10.1061/(ASCE)0733-9399(1998)124:7(713)
- S. R. Jensen and O. Gurbuz, "Sliding and Rocking of Unanchored Components and Structures," Structures Congress, pp.2178-2189, 2011.
- Yuan Shao, Seismic Response of Unanchored Objects, Doctoral Dissertation, NCSU, 1998.
- R. L. Nibor, Analytical and Experimental Evaluation of Seismic Mitigation Measures for Art Objects, Doctoral Dissertation, USC, 1989.
- 신태명, "사용후 핵연료 습식저장 시설의 중대사고 안전성 검토", 방사성폐기물학회지, 제9권, 제4호, pp.231-236, 2011.
- 황근창, "마찰계수를 이용한 사면에서 물체의 운동 분석", 한국물리학회, 제46권, 제5호, pp.237-248, 2003.
- 김정수, 박재석, "바닥 거칠기 및 미끄럼판 재질에 따른 미끄러짐 특성연구", 한국안전학회지, 제25권, 제5호, pp.65-69, 2010.
- C. L. Mehta, Sliding of Loose Objects during Earthquakes, Structural Design and Drafting Division, 1974.
- M. Aslam, W. G. Godden, and D. T. Scalies, Sliding Response of Rigid Bodies to Earthquake Motion, Lawrence Berkeley Laboratory, University of California, 1975.
- H. W. Shenton, "Criteria for Initiation of Slide, Rock, and Slide-Rock Modes," J. of Engineering Mechanics, Vol.122, July, 1996.