Investigation of temperature-dependent mechanical behaviours of polycarbonate with an innovative fractional order model

Investigation of temperature-dependent mechanical behaviours of polycarbonate with an innovative fractional order model

SUN Lin, CHENG Gang, BARRIERE Thierry

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Abstract. Amorphous thermoplastic polymers are considered as essential engineering materials. However, their strongly temperature-dependent elastic-viscoplastic behaviour is still not well understood. The large deformation response of these materials in the temperature range spanning the glass transition temperature is highly required. In this paper, the uniaxial compression tests are performed with large deformation on a polycarbonate amorphous polymer, within a forming temperature range from 60 °C to 180 °C. The variable order fractional constitutive model is improved to describe the evolution of mechanical behaviour of polycarbonate at different temperatures. The fractional order in the model is proposed as a function of time. The simulation results are in good agreement with the experimental data. It is concluded that the variable order fractional model is an efficient tool to predict the large deformation of amorphous polymers under different temperatures.

Keywords
Polycarbonate, Glass Transition Temperature, Variable Order Fractional Model, Mechanical Behaviour

Published online 4/24/2024, 8 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: SUN Lin, CHENG Gang, BARRIERE Thierry, Investigation of temperature-dependent mechanical behaviours of polycarbonate with an innovative fractional order model, Materials Research Proceedings, Vol. 41, pp 2174-2181, 2024

DOI: https://doi.org/10.21741/9781644903131-239

The article was published as article 239 of the book Material Forming

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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