MATEC Web Conf.
Volume 119, 2017The Fifth International Multi-Conference on Engineering and Technology Innovation 2016 (IMETI 2016)
|Number of page(s)||8|
|Published online||04 August 2017|
A method of curvature mode difference and wavelet transform to damage detection on space grid structure
1 School of Civil Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei Province, 050018, China
2 NORENDAR International, Shijiazhuang, Hebei Province, China
a Corresponding author : email@example.com
A method combined curvature mode difference and wavelet transformation was used to determine the damage location of space gird structure. This method considered the curvature mode difference of pre and post damage as the wavelet transform analysis signal. Moreover, these signals were analyzed by wavelet transform using wavelet function db3. As the wavelet transform coefficient occur sudden change, the damage locations of links will be obtained. In this paper, square pyramid space grid structure, orthogonal space truss structure, three way latticed grid and honeycomb triangular pyramid grid structure will be analyzed using this method to identify single damage and multi-damage location. The solutions from numerical simulations show that this method can take effective identification of single damage location and multi-damage location of square pyramid space grid structure by the first mode condition. And this method has versatility to detect damages from different space grid structures.
© The Authors, published by EDP Sciences, 2017
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