Prediction of Hyperelastic Material Properties of Nafion117 and Nafion/ZrO2 Nano-Composite Membrane

  • F. Nemavhola Department of Mechanical and Industrial Engineering, University of South Africa Private BagX9, Florida, 1709
  • R. Sigwadi Department of Civil and Chemical Engineering, University of South Africa, Private BagX9, Florida, 1709
Keywords: Constitutive laws; hyperelastic deformation; mechanical behaviour; uniaxial tests

Abstract

This paper presents constitutive laws suitable for the prediction of mechanical behaviour of nano-composite membrane compared with the commercial membrane Nafion®117. The uniaxial tensile data of commercial Nafion®117 and Nafion®/ Zr-150 nano-composite membrane utilised for fitting hyperelastic models was determined experimentally. Several material models on mechanical behaviour of nano-composite and commercial Nafion® 117 membrane material was fitted to determined accuracy. In order to observe yield and fracture behaviour, the com-mercial Nafion®117 and Nafion®/ Zr-150 nano-composite membranes were loaded in uniaxial direction at a constant strain rate. To obtain the optimal material constants form six different material models considered in this study, the OriginLab® version 9 was used and the Leven-berg-Marquardt (M) optimization logarithm. Hyperplastic material models including Mooney-Rivlin, Yeoh, Ogden, Humphrey, Martins and Veronda-Westmann were selected to use in an inverse method to fit the experimental uniaxial data of nano-composite material. The hyper-plastic material parameters could then be used to simulate material behaviour of nano mem-brane using finite element analysis (FEA) technique. The procedure discussed in this paper could be used to accurately determine the constitutive parameters of various constitutive models of Polymer Nafion presented.

Published
2019-07-04
How to Cite
Nemavhola, F., & Sigwadi, R. (2019). Prediction of Hyperelastic Material Properties of Nafion117 and Nafion/ZrO2 Nano-Composite Membrane. International Journal of Automotive and Mechanical Engineering, 16(2), 6524-6540. https://doi.org/10.15282/ijame.16.2.2019.5.0492
Section
Articles