journal6 ›› 2014, Vol. 35 ›› Issue (5): 37-42.DOI: 10.3969/j.issn.1007-2985.2014.05.010

• Information and Engineering • Previous Articles     Next Articles

Structural Damage Identification Based on Strain Modal Flexibility Curvature

 ZHUO  De-Bing, TAO  Jie   

  1. (1.College of Resources and Planning Sciences,Jishou University,Zhangjiajie 427000,Hunan China;2.Shandong Consultant Co. LTD of Electric Engineering,Jinan 250013,China)
  • Online:2014-09-25 Published:2014-10-30

Abstract: Stochastic subspace identification was utilized to extract modal parameters from the structural response signals,by which the modal flexibility curvature (MFC) was constructed to detect structural damage.A numerical model of simple beam using line elements was employed to compare the results between the displacement modes and strain modes by means of the above procedure.In addition,a simple beam model constructed by solid elements was also used to investigate the effect of recorded locations of strain signals on the damage identification.The results show that the strain modes are better than displacement modes in locating damage under the effect of noise;however,the recorded places of strain signals should be near the damaged parts.

Key words: strain mode, stochastic subspace identification, damage identification, modal flexibility curvature

WeChat e-book chaoxing Mobile QQ