Abstract
Despite wide industrial applications of Bis-GMA polymer, very few studies are available about the material classification, mechanical properties, and behavior of this material. In this study, the compressive behavior of Bis-GMA polymer was studied using different hyperelastic constitutive models through a hybrid experimental-computational process. Standard uniaxial compression tests were conducted to extract the mechanical behavior and structural response of the Bis-GMA polymer. A nano-indentation experiment was used to verify the compressive behavior of Bis-GMA polymer in the form of hyperelastic behavior. The finite element model and real-time simulation of the test incorporating different hyperelastic models were developed in comparison with the experimental finding to obtain the proper type of hyperelastic behavior of Bis-GMA polymer. The results indicate that a second-order polynomial hyperelastic model is the best fit to predict the behavior of Bis-GMA polymer. Next, the validated model was used to determine the true stress–strain curve of the Bis-GMA polymer.
Highlights
Polymer materials are rapidly used in the manufacturing of advanced structures for various industrial applications from biomechanics to aerospace, etc. [1]
Polymers 2019, 11, 1571 of polymers is normally examined through their reversible behavior in the loading-unloading process, in which a nano-indentation experiment is used to assess the nonlinear elastic behavior of the polymers through the loading-unloading [11,12,13,14]
Many hyperelastic models have been derived to describe the mechanical behavior of polymeric materials, including Ogden, Arruda and Boyce, Polynomial, Van Der Waals, and Yeoh models [6,15,16,17,18]
Summary
Polymer materials are rapidly used in the manufacturing of advanced structures for various industrial applications from biomechanics to aerospace, etc. [1]. Polymer materials are rapidly used in the manufacturing of advanced structures for various industrial applications from biomechanics to aerospace, etc. The characterization of the properties and mechanical behavior of polymeric materials have been considered as great challenges in the design and analysis of novel composites and polymer-based structures [2,3,4,5,6]. Polymers 2019, 11, 1571 of polymers is normally examined through their reversible behavior in the loading-unloading process, in which a nano-indentation experiment is used to assess the nonlinear elastic behavior of the polymers through the loading-unloading [11,12,13,14].
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