The Research of Gantry Crane Girder Damage Problem by Modal Analysis Method

Abstract:

most crane damage identification of the work has focused on the static analysis, that can't explain whether the crane has a damage or not by this way. So the paper explained the modal signal to analysis this problem , Used 300 tons gantry crane’s beam for background and ANSYS software as a tool was used for numerical simulation. The purpose is to find difference between the damage beam of the crane and health one,because if there was a damage on the beam , the formations and frequency will be changed. This theory of analysis is based on the vibration equation. In order to illustrate it better, the wavelet analysis method as a tool has been used ,in this case the signal was filtered, we can judge the damage location from the three dimensional curve. The basic aim of this paper is to arrive at a better way to judge the damage.Through the above analysis, the results proved the author's idea, identify structural’s damage basically, but it still need further research.

• Periodical: Applied Mechanics and Materials (Volumes 578-579)
• Pages: 872-876
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.578-579.872
• Online since: July 2014
• Authors: Xiao Peng Nie*, Xin Gang Li, Hong Wei Fan, Ke Qin Ding, Li Bin Xu
• Keywords: Component, Crane, Damage Identification, Modal Analysis, Wavelet Analysis

References

[1] Y. J. Yan, L. Cheng, Z. Y. Wu, L. H. Yam Development in vibration-based structural damage detection technique. [J] Mechanical Systems and Signal Processing 2007, 21: 2198-2211.

DOI: 10.1016/j.ymssp.2006.10.002

[2] R. Capozucca Detection of damage due to corrosion in prestressed RC beams by static anddynamic tests. [J] Construction and Building Materials 2008, 22: 738-746.

DOI: 10.1016/j.conbuildmat.2007.01.025

[3] M. Dilena, A. Morassi Damage detection in discrete vibrating systems. [J] Journal of Sound and Vibration 2006, 289: 830-850.

DOI: 10.1016/j.jsv.2005.02.020

[4] H. P. Lin Direct and inverse methods on free vibration analysis of simply supported beams with a crack. [J] Engineering Structures 2004, 26: 427-436Z.

DOI: 10.1016/j.engstruct.2003.10.014

[5] Wang, R. M. Lin, M. K. Lim Structural damage detection using measured FRF data. [J] Computer Methods in Applied Mechanics and Engineering 1997, 147: 187-197L.

DOI: 10.1016/s0045-7825(97)00013-3

[6] H. Yam, Y. J. Yan, J. S. Jiang Vibration-based damage detection for composite structures using wavelet transform and neural network identification. [J] Composite Structures 2003, 60: 403-412.

DOI: 10.1016/s0263-8223(03)00023-0