電腦動畫模擬結構物之動力反應：TMD之減震效果

Abstract

本研究系建立一套電腦動畫模擬系統，模擬高樓建物在地震力作用之 下的動力反應，及調和質量阻尼器之減震研究結果。藉由圖形化輸出方式 來替代繁複的分析數據，並由對話盒的製作使結構資料得以友善的交談方 式輸入; 善用Windows API 指令，使得本模擬系統對於輸入步驟的正確性 更具判斷能力。而位元對應圖的應用，也讓動畫顯示更具連續性。 由 範例的操作的結果，證實本系統能具體的模擬出結構物在地震力作用下的 震動情形，同時也清楚的看到調和質量阻尼器的減震能力，以及不對稱結 構物因樓版重心與該樓層抗剪中心不一致所造成的扭轉效應。 A computer animation system to simulate the dynamic responses of high-righbuildings under earthquakes has been developed. Furthermore,the effect of TunedMass Damper(TMD) in reducing structural dynamic responses induced by earthquakewas also investigated in this study. Instead of the complicated result of numerialdata, the explicit representation of graphic modal was employed to display theresult of dynamic analysis. In order to emprove the efficient of interactionbetween users and the system, dialog boxes have been widely used in this systemto provide a more friendly user interface. Windows API commands provide a goodmethod to develop the system more intelligent in judging the validity of inputdata. According to the simulating of three examples, the system provide a more reality effect than traditional numerical data. TMD really is effective to reduced the vibrations induced by earthquake. furthermore, the torsion effectof unsymmetric structures under earthquakes also can be clearly displayed in this system.