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Study on the Frequency Response Function of Viscoelastic Pipelines Using a Multi-Element Kevin-Voigt Model

Jinzhe GongSchool of Civil, Envrionmental & Mining Engineering, the University of Adelaide, Adelaide, South Australia 5005, AustraliaAaron C. ZecchinSchool of Civil, Envrionmental & Mining Engineering, the University of Adelaide, Adelaide, South Australia 5005, AustraliaMartin F. LambertSchool of Civil, Envrionmental & Mining Engineering, the University of Adelaide, Adelaide, South Australia 5005, AustraliaAngus R. SimpsonSchool of Civil, Envrionmental & Mining Engineering, the University of Adelaide, Adelaide, South Australia 5005, Australia

2015en

ABI

Аннотация

This research focuses on the study of the frequency response function (FRF) of viscoelastic pipelines. The transfer matrix of a uniform viscoelastic pipeline is derived using the generalized multi-element Kevin-Voigt (K-V) model. The analytical expressions of the characteristic impedance and propagation operator are presented. The frequency response diagrams (FRDs) of a viscoelastic pipeline, with or without unsteady friction, are obtained numerically and compared with the FRDs of an elastic pipeline, with or without unsteady friction. It is verified that the pipe wall viscoelasticity introduces not only frequency-dependent shifting of the resonant frequencies but also frequency-dependent damping of the resonant peaks.

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Идентификаторлар

DOI: 10.1016/j.proeng.2015.08.880

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