Assessment of compressive mechanical behavior of Bis-GMA polymer using hyperelastic models

• Main Authors: Karimzadeh, Atefeh, Ayatollahi, Majid Reza, Koloor, Seyed Saeid Rahimian, Abdul Razak, Bushroa, Yahya, Mohd Yazid, Tamin, Mohd Nasir
• Format: Article
• Language: English
• Published: MDPI 2019
• Online Access: http://psasir.upm.edu.my/id/eprint/38251/1/38251.pdf; http://psasir.upm.edu.my/id/eprint/38251/; https://www.mdpi.com/2073-4360/11/10/1571

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.