Application of the POD method to nonlinear dynamic analysis of reinforced concrete frame structures subjected to earthquakes - Cnam - Conservatoire national des arts et métiers Access content directly
Journal Articles Engineering Structures Year : 2022

Application of the POD method to nonlinear dynamic analysis of reinforced concrete frame structures subjected to earthquakes

Abstract

For the purpose of reducing computational cost, this paper presents an extension of the Proper Orthogonal Decomposition method (POD) to nonlinear dynamic analysis of reinforced concrete multistory frame structure. The material nonlinearity, due to plasticity and damaging, is modeled by the multifiber section approach. An initial expensive full model nonlinear time-history analysis is conducted for the frame structure subjected to a portion of an initial seismic base excitation. Then, POD modes are extracted and used to reduce the dynamic model for the rest of the initial base excitation or for multiple different ones. By comparing the full and reduced models, the computational cost was lowered by up to 94 % while maintaining good level of accuracy.
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Dates and versions

hal-03791181 , version 1 (12-01-2024)

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Cite

Naim Ayoub, Jean-François Deü, Walid Larbi, Joseph Pais, Lucie Rouleau. Application of the POD method to nonlinear dynamic analysis of reinforced concrete frame structures subjected to earthquakes. Engineering Structures, 2022, 270, pp.114854. ⟨10.1016/j.engstruct.2022.114854⟩. ⟨hal-03791181⟩
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