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2011•Journal of Jiaxing UniversityRequires access

Modal Analysis of Large Storage Tanks

Ding Xiao-jun

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Abstract

Modal analysis is the basis of some other dynamic response.For further analysis of dynamic response of the tanks in earthquake,simplified mass-added models were built with ANSYS program,and the first 30 modals of anchored and unanchored tanks were extracted as well as some three-dimension mode figures.The results indicate that,most models of the empty large storage tanks show multiple circumferential waves,and the upper parts of the tanks show relative large deformation,so it is essential to take some seismic reinforcement measures to the upper parts of the tank wall.

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What this paper is about

Modal analysis is the basis of some other dynamic response.For further analysis of dynamic response of the tanks in earthquake,simplified mass-added models were built with ANSYS program,and the first 30 modals of anchored and unanchored tanks were extracted as well as some three-dimension mode figures.The results indicate that,most models of the empty large storage tanks show multiple circumferential waves,and the upper parts of the tanks show relative large deformation,so it is essential to take some seismic reinforcement measures to the upper parts of the tank wall.

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Available abstract

Modal analysis is the basis of some other dynamic response.For further analysis of dynamic response of the tanks in earthquake,simplified mass-added models were built with ANSYS program,and the first 30 modals of anchored and unanchored tanks were extracted as well as some three-dimension mode figures.The results indicate that,most models of the empty large storage tanks show multiple circumferential waves,and the upper parts of the tanks show relative large deformation,so it is essential to take some seismic reinforcement measures to the upper parts of the tank wall.

Key concepts: Storage tank, Modal, Modal analysis, Structural engineering, Engineering, Dimension (graph theory), Reinforcement, Mode (computer interface)

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