Translated Titles

Average of Load Discontinuity Values for Pseudodynamic Testing





Key Words

擬動態實驗 ; 時間步長 ; 脈衝不連續 ; pseudodynamic test ; time step ; discontinuity in impulse



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Chinese Abstract


English Abstract

The discreted equation of motion under the discontinuous impulse with larger time step will lead to an amplitude distortion in the step-by-step integration. Meanwhile, a research found that the amplitude distortion arising from that discontinuity of impulse is proportional to the step size. In this case, we can reduce amplitude distortion by using the very small time step which can be a reliable aspect in numerically computing, but will cause an inaccurate result in the Pseudo dynamic Testing if the value of step increment is near or under the resolution of the measure system. In this research, the method is proposed to overcome the inaccuracy of discontinuity at the end of an impulse. As processing the step-by-step integration method, to replace the loading input by the average value of the two discontinuity value at the integration point of load discontinuity. Consequently, this method will not only increase no extra calculating in the step-by-step solution but also reduce the extra impulse and displacement to further confirm that it works in both the numerically simulating and the Pseudo dynamic Testing.

Topic Category 工程學院 > 土木與防災研究所
工程學 > 土木與建築工程
工程學 > 市政與環境工程
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Times Cited
  1. 林耕賢(2010)。即時擬動態試驗之時間延遲補償。臺北科技大學土木與防災研究所學位論文。2010。1-117。