Study on Truss Structure Damage Identification Base on Residual Force Vector

Abstract:

By using the intrinsic character of the truss structure, a new direct damage identification method of the truss structure based on residual force vector is presented. The stiffness connectivity matrix is got by sensitivity analysis, and it can be used to expand the stiffness perturbation matrix of damage structure, then, a new residual force vector is got, it can be solved directly, so the stiffness perturbation of structure is got, by it, the damaged locations and the extents of the truss structure are identified. At last, a hyper static truss structure example is given, the identification result shows that, only needed the first-order mode of the damaged structure, the damage can be identified accurately.

• Periodical: Applied Mechanics and Materials (Volumes 477-478)
• Pages: 759-764
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.477-478.759
• Online since: December 2013
• Authors: Wan Jie Zou*, Yun Xia Zhang, Chuan Gao Li
• Keywords: Damage Identification, Residual Force Vector, Truss Structure

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