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민동주(Dong-Ju Min),정명락(Myung-Rag Jung),박성민(Sung-Min Park),김문영(Moon-Young Kim) 한국소음진동공학회 2015 한국소음진동공학회 학술대회논문집 Vol.2015 No.10
The purpose of this study is to investigate the influence of moving mass on the vibration characteristics and the dynamic response of the simply supported beam. The three types of the moving mass (moving load, unsprung mass, and sprung mass) are applied to the vehicle-bridge interaction analysis. And the numerical analyses are then conducted to evaluate the effect of the unsprung mass and the spring and damper of the sprung mass on natural frequencies and dynamic responses of the simple beam. Particularly, in the case of the sprung mass, how the natural frequency of the interaction system is varied is explored depending on the position of the moving mass and the frequency ratio of the moving mass and the beam. Finally the parametric study on the resonance phenomena is done with changing mass, spring and damper parameters through the time history simulation.