Constitutive modeling of the material behavior at elevated temperatures and related material testing |
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| Affiliation: | 1. Universiti Teknologi Brunei, Jalan Tungku Link, Gadong, BE1410, Brunei Darussalam;2. Fachhochschule Kiel, Grenzstraße 3, Kiel 24149, Germany;3. Institut für Thermodynamik der Luft- und Raumfahrt, Universität Stuttgart, Pfaffenwaldring 31, Stuttgart 70569, Germany;4. Department of Civil & Environmental Engineering, University of California, Davis, California, USA |
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| Abstract: | Constant strain rate tests, both in tension and in torsion, were performed on 2618-T61 aluminum alloy at 200°C. The results were compared with those from the creep tests. It was demonstrated that the macroscopically observed material behavior was essentially a consequence of the inherent time dependence of the inelastic strain. Based on the experimental results, the traditional approach and the unified approach for modeling the material behavior at elevated temperatures were compared. The material tests required for the development of the constitutive model and their limitations were also discussed. |
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