Havasi, Kristóf and Kossa, Attila (2025) Estimating equibiaxial stress-strain relation based on non-homogeneous biaxial measurement. JOURNAL OF THEORETICAL AND APPLIED MECHANICS, 63 (3). pp. 491-499. ISSN 1429-2955
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Abstract
This study investigates the influence of geometry on stress distributions in equibiaxial testing of rubber-like materials using hyperelastic models. Two geometries were examined, characterized by parameters specifying configurations like corner angles and normalized radii. A finite element approach was employed to simulate deformation under equibiaxial stretching, revealing non-homogeneous stress states. Apparent stress ratios were derived to evaluate geometry-induced deviations from purely equibiaxial stress-strain behavior. Results highlight the significance of geometrical factors in stress distributions. The findings offer insights for optimizing specimen designs for equibiaxial material characterization and improving the accuracy of extracted material properties.
| Item Type: | Article |
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| Additional Information: | The publication has been funded by the Polish Ministry of Science and Higher Education under the Excellent Science II programme “Support for scientific conferences”. The content of this article was presented during the 40th Danubia-Adria Symposium on Advances in Experimental Mechanics, Gdańsk, Poland, September 24–27, 2024. This research was supported by the Hungarian National Research, Development and Innovation Office (FK 142457). This research was supported by the János Bolyai Research Scholarship of the Hungarian Academy of Sciences. |
| Uncontrolled Keywords: | equibiaxial testing; hyperelastic materials; specimen geometry; finite element analysis; stress-strain relationship |
| Subjects: | Q Science / természettudomány > QC Physics / fizika T Technology / alkalmazott, műszaki tudományok > T2 Technology (General) / műszaki tudományok általában |
| SWORD Depositor: | MTMT SWORD |
| Depositing User: | MTMT SWORD |
| Date Deposited: | 10 Sep 2025 20:33 |
| Last Modified: | 10 Sep 2025 20:33 |
| URI: | https://real.mtak.hu/id/eprint/223942 |
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