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Temperature-dependent mechanical behaviour of PMMA: Experimental analysis and modelling

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posted on 26.01.2017, 11:25 authored by Adel A. Abdel-Wahab, Sabbah Ataya, Vadim SilberschmidtVadim Silberschmidt
© 2016 Elsevier LtdAn experimental study of temperature-dependent mechanical behaviour of Poly-methyl methacrylate (PMMA) was performed at a range of temperatures (20 °C, 40 °C, 60 °C and 80 °C) below its glass transition point (108 °C) under uniaxial tension and three-point bending loading conditions. This study was accompanied by simulations aimed at identification of material parameters for two different constitutive material models. Experimental flow curves obtained for PMMA were used in elasto-plastic analysis, while a sim-flow optimization tool was employed for a two-layer viscoplasticity model. The temperature increase significantly affected mechanical behaviour of PMMA, with quasi-brittle fracture at room temperature and super-plastic behaviour (ε>110%) at 80 °C. The two-layer viscoplasticity material model was found to agree better with the experimental data obtained for uniaxial tension than the elasto-plastic description.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Polymer Testing

Volume

58

Pages

86 - 95

Citation

ABDEL-WAHAB, A.A., ATAYA, S. and SILBERSCHMIDT, V.V., 2017. Temperature-dependent mechanical behaviour of PMMA: Experimental analysis and modelling. Polymer Testing, 58, pp. 86-95.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2017

Notes

This paper was published in the journal Polymer Testing and the definitive published version is available at http://dx.doi.org/10.1016/j.polymertesting.2016.12.016.

ISSN

0142-9418

Language

en