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Title: Temperature-dependent mechanical behaviour of PMMA: Experimental analysis and modelling
Authors: Abdel-Wahab, Adel A.
Ataya, Sabbah
Silberschmidt, Vadim V.
Keywords: Poly (methyl methacrylate
Uniaxial tension
Three-point bending
Temperature dependence
Finite element
Two-layer viscoplasticity
Issue Date: 2017
Publisher: © Elsevier
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.
Abstract: © 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.
Description: This paper is in closed access until 21st Dec 2017.
Version: Accepted for publication
DOI: 10.1016/j.polymertesting.2016.12.016
URI: https://dspace.lboro.ac.uk/2134/23887
Publisher Link: http://dx.doi.org/10.1016/j.polymertesting.2016.12.016
ISSN: 0142-9418
Appears in Collections:Closed Access (Mechanical, Electrical and Manufacturing Engineering)

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