Generally, material constants and their corresponding stability regions of engineering materials can be obtained by well-known commercial software. Whereas for most elastomers, material constants are unavailable, this makes it difficult to carry out further mechanical studies on them. This research was aimed at performing a comparative study of various available material models and obtains the most suitable one among them, for determining hyper-elastic material constants and their stability regions from uniaxial tensile test data of polydimethylsiloxane (PDMS) material. Peel tests were conducted on a specimen of PDMS, a flexible adhesive bonded to a hard substrate, in this study. The PDMS interfacial separation from the hard substrate was detected. The PDMS was modelled as a hyper-elastic material and the interfacial characteristics were modelled with a cohesive zone model (CZM) in a finite element peeling simulation. The uniaxial tensile test experiment was used to determine the material properties of PDMS. The parameters of the cohesive zone were derived analytically from peel test data and from a parametric research. The experimental values of the peel force of the 90 degree peel test and the numerical results from the CZM/FE simulation were found to be in good agreement.
Validation of Material Models for PDMS Material by Finite Element Analysis
Lect. Notes Electrical Eng.
International Conference on Robotics, Control, Automation and Artificial Intelligence ; 2022 November 24, 2022 - November 26, 2022
2023-11-18
14 pages
Article/Chapter (Book)
Electronic Resource
English
Finite Element Analysis Considering Material Porosity
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