Numerical und Experimental Modeling of Porous Hyperelastic Materials
Regarding structural sealant glazing in modern glass façades, glass panes are directly bonded on the secondary construction by structural silicones. These structural silicones belong to the group of rubber-like materials, which exhibit a strong nonlinear material behavior.
To characterize and account for these nonlinearities, the silicones have to be analyzed in terms of:
EXPERIMENTAL INVESTIGATIONS: Here, special experimental test devices have to be developed, to analyze homogeneous and inhomogeneous stress and strain states within the specimen. To analyze the deformation, Digital Image Correlation will be adduced.
ANALYTICAL/Numerical INVESTIGATIONS: Based on the experimental results, numerical studies have to be applied to account for the nonlinear behavior of the silicones. Here, classical hyperelastic material laws as well as new developments can be applied and compared to each other.
ANALYTICAL INVESTIGATIONS: To describe the failure of rubber-like materials failure criteria have to be developed based on the experimental results.
Two IREP students can work on this project.
Pre-requisites or requirements for the project
- ANSYS, Maple, Mathematica, MatLab
- Digital Image Correlation
- Experimental Testing of Materials
Recommended literature and preparation
L. Treloar. The physics of rubber elasticity. Oxford university press, 1975.
G. A. Holzapfel. Nonlinear solid mechanics. Vol. 24. Wiley Chichester, 2000.
C Miehe, S Göktepe, and F Lulei. “A micro-macro approach to rubber-like materials—part I: the non-affine micro-sphere model of rubber elasticity”. In: Journal of the Mechanics and Physics of Solids 52.11 (2004), pp. 2617– 2660.
until end of December 2020