Abstract: To conquor the deficiency of poor computational efficiency and slow convergence of traditional sensitivity analysis-based finite element model updating methodology which is widely applied, response surface methodology has been introduced into a 500KV large transmission tower's dynamic FE model updating. Based on study group’s former findings, elastic stiffness of the tower's three directional foot bearings is selected as updating parameter. Key steps in updating process, including one factor test, sample on FE platform, building and analyzing response surface, parameter optimization, are presented in succession, response surface-based dynamic FE model updating being completed. The updated tower model accurately recurred the structure’s primary and secondary natural frequencies, and its effect approximates that of sensitivity analysis-based methodology, proving its application value. Based on the towered work, analysis of parameter selection is also presented for reference.
CHENG Xiao-xiang;FEI Qing-guo;HE Ding-ding;HAN Xiao-lin.
Dynamic Updating of a Large Transmission Tower’s Finite Element Model Based on Response Surface Methodology[J]. Journal of Vibration and Shock, 2011, 30(5): 116-122
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