Damage Identification of Space Truss Structure Based on Strain Modal and Wavelet Transform

Wei Ran Liu; Qi Lian Li; Hong Liang Yue

doi:10.4028/www.scientific.net/AMM.744-746.33

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Comparison of Stability and Deformation Performance of Cable-Braced Grid Shell with Different Section Forms of Steel Tube
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Damage Identification of Space Truss Structure Based on Strain Modal and Wavelet Transform
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Detection Indicator of Structural Nondestructive Damage Based on Flexibility Curvature Difference Rate
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Durability Design of Marine Concrete Structure Considering the Influence of Load
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 744-746Damage Identification of Space Truss Structure...

Damage Identification of Space Truss Structure Based on Strain Modal and Wavelet Transform

Abstract:

Based on the characteristics of space truss structures, the concept of modal strain energy is introduced and square difference in elemental modal strain is presented. Through the square difference in elemental modal strain and wavelet transform, this paper presents a method for space truss structure damage recognition. The structural damage index is presented with the change of wavelet coefficients. Numerical simulation results show that: this method is effective to locate the single, multiple damages and light, severe damage with the first mode information. The preliminary tries for damage extent identification were made by the wavelet coefficients.

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Periodical:

Applied Mechanics and Materials (Volumes 744-746)

Pages:

33-37

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.744-746.33

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Online since:

March 2015

Authors:

Wei Ran Liu*, Qi Lian Li, Hong Liang Yue

Keywords:

Damage Identification, Space Truss Structure, Strain Modal, Wavelet Transform

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* - Corresponding Author

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