COMPARATIVE ANALYSIS OF YEOH, OGDEN, ARRUDA-BOYCE HYPERELASTIC CONSTITUTIVE MODEL AND SIMPLE RHEOLOGICAL MODEL OF PT CIPTA DAYA MANDIRIINSANI INDONESIA‟S INDUSTRIAL RUBBER

• Main Author: (NIM : 13106116); Tim Pembimbing : Dr. Ir. Bagus Budiwantoro; Dr. Andri Andriyana, GALANDRA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/15746
• Institution: Institut Teknologi Bandung

Indonesia&#8223;s wealth of natural resources are not coupled by capabilities to make them fully cultivated, in this case rubber for instance. Huge dependancy of rubber product in industrial process and as a mechanical component demand more in-depth research about rubber in Indonesia. <br /> <br /> <br /> This research is further step of previous research on stress-strain testing for the PT Cipta Daya Mandiriinsani Indonesia&#8223;s rubber industry with NR and NBR types at <br /> <br /> <br /> strain rate 0,1/s and 0,01/s. This study aims to find the appropriate hyperelastic model, governing equation of viscoelastic constitutive model, and simple model of stress <br /> <br /> <br /> relaxation fenomena as one of characteristics of viscoelastic properties of rubber using spring-dashpot analogy. The selected hyperelastic constitutive physically-based models are Arruda-Boyce (8-chain), Yeoh(term 1,2,3), and Ogden(term 1,2,3). Then, stress relaxation is described by stress-strain curve using Maxwell, Standard Linear <br /> <br /> <br /> Solid, and Generalized Maxwell model. <br /> <br /> <br /> Based on experimental data, the coefficients for each model were calculated and used to describe the condition of stress strain relationship for each type of rubber. <br /> <br /> <br /> Comparison for the best fit of the models is performed by calculating error values. For the case of PT Cipta Daya Mandiriinsani Indonesia&#8223;s rubber, Ogden Term 2 model <br /> <br /> <br /> sound to be the best to describe hyperelastic stress strain characteristics, viscoelastic constitutive model works not quite well but development will keep goes on, and stress <br /> <br /> <br /> relaxation fenomena quite well be representated by Generalized Maxwell Model.