Abstract：The finite element model correction method of truss structure based on lifting wavelet packet transform and fuzzy pattern recognition is presented. Firstly, the element stiffness matrix of spatial truss is established using the joint fixity factor. Secondly, the vibration signal is decomposed using lifting wavelet packet (WP) analysis based on lifting scheme, and then the corresponding characteristic vector is established by the lifting WP component energy, which can be used as the subset of fuzzy pattern recognition. Finally, the finite element model is updated using fuzzy pattern recognition, and the effect of noise on the algorithm is also studied. In order to verify the proposed method, the numerical research on a two-story truss structure model is carried out. The numerical results show that the proposed method can be effectively used to correct the finite element model.
谭冬梅;瞿伟廉. 基于提升小波包和模糊模式识别的结构有限元模型修正[J]. , 2011, 30(8): 193-198.
Tan Dong-mei;Qu Wei-lian. The finite element model updating of structure based on lifting wavelet packet transform and fuzzy pattern recognition. , 2011, 30(8): 193-198.
2011, Vol. 30 
