FE MODEL UPDATING OF STRUCTURE BASED ON VIRTUAL DISTORTION METHOD

Wei Jinhui; Ren Weixin; Li Guanghui

doi:10.13204/j.gyjz2001411017

Volume 44 Issue 11

Jan. 2015

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Yang Youfa, Liu Yongling, Ling Ling, Zhang Jiangli. INFLUENCE OF DIFFERENT CONNECTING METHODS ON THE SEISMIC DISSIPATION OF TWO-TOWER-CONNECTED HIGH-RISE BUILDING WITH ENLARGED BASE[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(2): 29-33,44. doi: 10.13204/j.gyjz201302006

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Wei Jinhui, Ren Weixin, Li Guanghui. FE MODEL UPDATING OF STRUCTURE BASED ON VIRTUAL DISTORTION METHOD[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(11): 85-90. doi: 10.13204/j.gyjz2001411017

Citation:

Wei Jinhui, Ren Weixin, Li Guanghui. FE MODEL UPDATING OF STRUCTURE BASED ON VIRTUAL DISTORTION METHOD[J]. INDUSTRIAL CONSTRUCTION, 2014, 44(11): 85-90. doi: 10.13204/j.gyjz2001411017

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FE MODEL UPDATING OF STRUCTURE BASED ON VIRTUAL DISTORTION METHOD

doi: 10.13204/j.gyjz2001411017

Publish Date: 2014-11-15

Abstract

Abstract

It was presented a finite element ( FE) model updating strategy based on static virtual distortion method ( VDM) which belonged to the fast and exact structural reanalysis methods． The influence matrix of beam element and structural displacement sensitivity based on VDM were deduced． According to the static displacements and influence matrix of initial structure，the nodal displacements of interest could be recalculated and then FE model updating could be implemented without modifying structural stiffness matrix． Different from the traditional algorithm requiring stiffness matrix inversion，the corresponding static displacement sensitivity could be directly obtained using VDM， thus enhancing computational efficiency． Finally，FE model updating of a plane frame structure was conducted using numerical simulation results and measured displacements respectively．
- virtual distortion method,
- model updating,
- displacement,
- influence matrix,
- sensitivity

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