Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Study of the time-temperature-dependent behaviour of PVB: Application to laminated glass elements
AbstractThe mechanical behaviour of laminated glass elements is governed by material properties of the interlayer, the Polyvinyl Butiral (PVB) being the most used interlayer material in these elements. PVB is a viscoelastic material whose mechanical properties (Young’s modulus, shear modulus, etc.) depend mainly on the load application time and the temperature. Thus an adequate mechanical characterization of the PVB must be performed in order to predict the response of laminated glass elements with a good accuracyIn this work, PVB specimens were subjected to static relaxation tests and to dynamic experimental tests (frequency domain) at different temperatures from to using a DMTA equipment. Then the curves at different temperatures were related using the William-Landel-Ferry (WLF) Time-Temperature Superposition (TTS) model to obtain the mastercurve of both the time and frequency domain Young’s moduli of the PVB. Finally, a viscoelastic Prony based model was fitted to the experimental data and used, afterwards, to simulate numerically the static and dynamic behaviour of different laminated glass elements at different temperatures. The numerical simulations were compared with the static and dynamic experimental results achieving a good accuracy in both the static deflections and the natural frequencies. With respect to the damping, the discrepancies are less than 22%.
Graphical abstract
HighlightsAnalysis of the Time-Temperature Dependent behaviour of PVB.Application of the WLF-TTS model for obtaining the PVB moduli.Viscoelastic linear modelling of the PVB by the Generalized Maxwell model.Numerical simulations of laminated glass elements under static and dynamic loadings.
Study of the time-temperature-dependent behaviour of PVB: Application to laminated glass elements
AbstractThe mechanical behaviour of laminated glass elements is governed by material properties of the interlayer, the Polyvinyl Butiral (PVB) being the most used interlayer material in these elements. PVB is a viscoelastic material whose mechanical properties (Young’s modulus, shear modulus, etc.) depend mainly on the load application time and the temperature. Thus an adequate mechanical characterization of the PVB must be performed in order to predict the response of laminated glass elements with a good accuracyIn this work, PVB specimens were subjected to static relaxation tests and to dynamic experimental tests (frequency domain) at different temperatures from to using a DMTA equipment. Then the curves at different temperatures were related using the William-Landel-Ferry (WLF) Time-Temperature Superposition (TTS) model to obtain the mastercurve of both the time and frequency domain Young’s moduli of the PVB. Finally, a viscoelastic Prony based model was fitted to the experimental data and used, afterwards, to simulate numerically the static and dynamic behaviour of different laminated glass elements at different temperatures. The numerical simulations were compared with the static and dynamic experimental results achieving a good accuracy in both the static deflections and the natural frequencies. With respect to the damping, the discrepancies are less than 22%.
Graphical abstract
HighlightsAnalysis of the Time-Temperature Dependent behaviour of PVB.Application of the WLF-TTS model for obtaining the PVB moduli.Viscoelastic linear modelling of the PVB by the Generalized Maxwell model.Numerical simulations of laminated glass elements under static and dynamic loadings.
Study of the time-temperature-dependent behaviour of PVB: Application to laminated glass elements
Pelayo, F. (Autor:in) / Lamela-Rey, M.J. (Autor:in) / Muniz-Calvente, M. (Autor:in) / López-Aenlle, M. (Autor:in) / Álvarez-Vázquez, A. (Autor:in) / Fernández-Canteli, A. (Autor:in)
Thin-Walled Structures ; 119 ; 324-331
22.06.2017
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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