Spectral analysis of multiple cracked beam subjected to moving load

N. T. Khiem, P. T. Hang

Abstract


In present paper, the spectral approach is proposed for analysis of multiple cracked beam subjected to general moving load that allows us to obtain explicitly dynamic response of the beam in frequency domain. The obtained frequency response is straightforward to calculate time history response by using the FFT algorithm and provides a novel tool to investigate effect of position and depth of multiple cracks on the dynamic response. The analysis is important to develop the spectral method for identification of multiple cracked beam by using its response to moving load. The theoretical development is illustrated and validated by numerical case study.

Keywords


Multiple cracked beam; moving load problem; frequency domain solution; modal method; spectral analysis

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DOI: https://doi.org/10.15625/0866-7136/36/4/3369

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