서지주요정보
Navier-stokes 방정식을 이용한 교량 구조물의 유체유발 진동해석 = Flow-induced vibration analysis of bridge girder section using navier-stokes equations
서명 / 저자 Navier-stokes 방정식을 이용한 교량 구조물의 유체유발 진동해석 = Flow-induced vibration analysis of bridge girder section using navier-stokes equations / 박성종.
저자명 박성종 ; Park, Seong-Jong
발행사항 [대전 : 한국과학기술원, 2004].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8014990

소장위치/청구기호

학술문화관(문화관) 보존서고

MAE 04011

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Numerical analysis of static and dynamic wind effects on civil engineering structures was performed. Long-span suspension bridges are flexible structures that are highly sensitive to the action of the wind. Aerodynamic effect often becomes a governing factor in the design process of bridges and aeroelastic stability boundary becomes a prime criterion which should be confirmed during the structural design stage of bridges because the long-span suspension bridges are prone to the aerodynamic instabilities caused by wind. If the wind velocity exceeds the critical velocity that the bridge can withstand, then the bridge fails due to the phenomenon of flutter. Buffeting caused by turbulence results in structural fatigue, which could lead to the failure of a bridge. Navier-Stokes equations are used for the aeroelastic analysis of bridge girder section. The aeroelastic simulation is carried out to study the aeroelastic stability of bridges using both Computational Fluid Dynamic (CFD) and Computational Structural Dynamic (CSD) schemes. The Great Belt East Bridge (GBEB) is examined for validation of present schemes because there has been a lot of comparison results including the wind tunnel test data and numerical data on this bridge. In this study, flutter analysis was performed using an aeroelastic model of 2-Degree of Freedom (DOF) with heave and pitch. Critical flutter velocities were computed for bridges with different stiffness. It was confirmed that the critical flutter velocity of bridge girder section was sensitive to the change of structural stiffness. Flutter analysis using 3-DOF model with lateral, heave and pitch was also performed. The aeroelastic results show that the flutter frequency increases when the lateral motion is included. Buffeting analysis was also carried out using 3-DOF model.

서지기타정보

서지기타정보
청구기호 {MAE 04011
형태사항 vi, 72 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Seong-Jong Park
지도교수의 한글표기 : 이인
지도교수의 영문표기 : In Lee
학위논문 학위논문(석사) - 한국과학기술원 : 항공우주공학전공,
서지주기 참고문헌 : p. 37-39
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