A screening method of structural vibration acceleration response signals based on RMS ratio value

YANG Na, HU Hao-ran, DAI Lu

Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (3) : 8-13.

PDF(649 KB)
PDF(649 KB)
Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (3) : 8-13.

A screening method of structural vibration acceleration response signals based on RMS ratio value

  • YANG Na, HU Hao-ran, DAI Lu
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Abstract

Here, a new parameter based on RMS values of human-induced floor vibration acceleration was proposed to determine whether the collected human-induced floor vibration signal data are abnormal quickly. This parameter was the ratio of RMS and weighted RMS of the collected human-induced floor vibration acceleration response signal. The specific expression of the parameter was derived with the theory of the human-induced floor vibration response. The parameter was verified using a finite element floor model with human-induced loads under different operation conditions and a site test of floor vibration with human-induced loads under different operation conditions. It was shown that human-induced loads’ parameter has little effect on this proposed parameter, it is greatly related to basic properties of the floor structure; when dealing with large amounts of data signals, this parameter can be used to screen quickly these data.

Key words

 human-induced loads / acceleration / floor / RMS / weighted RMS

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YANG Na, HU Hao-ran, DAI Lu. A screening method of structural vibration acceleration response signals based on RMS ratio value[J]. Journal of Vibration and Shock, 2018, 37(3): 8-13

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