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Full-Range Stress-Strain Curves for Aluminum Alloys
| 题名： | Full-Range Stress-Strain Curves for Aluminum Alloys |
| 正文语种： | eng |
| 作者： | Yun, Xiang;Wang, Zhongxing;Gardner, Leroy |
| 作者单位： | Hong Kong Polytech Univ Dept Civil & Environm Engn Hong Kong Peoples R China|Imperial Coll London Dept Civil & Environm Engn South Kensington Campus London SW7 2AZ England;Tianjin Univ Res Sch Civil Engn Key Lab Coast Civil Struct Safety China Minist Ed Tianjin 300072 Peoples R China;Imperial Coll London Dept Civil & Environm Engn South Kensington Campus London SW7 2AZ England |
| 关键词： | Aluminum alloys;Constitutive modeling;Material modeling;Ramberg-Osgood model;Stress-strain curves;Numerical modeling |
| 摘要： | Aluminum alloys are being increasingly used in a wide range of construction applications owing to their sound mechanical properties, lightness in weight, strong corrosion resistance, ability to be formed into complex and efficient cross-sectional shapes, and natural aesthetics. Aluminum alloys are characterized by a rounded stress-strain response, with no sharply defined yield point. Such behavior can be accurately represented using Ramberg-Osgood-type equations. In the present study, use of a two-stage Ramberg-Osgood model to describe the full-range stress-strain behavior of aluminum alloys is proposed and, following careful analysis of a comprehensive database of aluminum alloy coupon test data assembled from the literature, standardized values or predictive expressions for the required input parameters are derived. The experimental database includes over 700 engineering stress-strain curves obtained from 56 sources and covers five common aluminum alloy grades: 5052-H36, 6061-T6, 6063-T5, 6082-T6, and 7A04-T6. The developed model is shown to be more accurate in predicting the full-range stress-strain response of aluminum alloys than existing expressions, and is suitable for use in the analytical modeling, numerical simulation, and advanced design of aluminum alloy structures. (C) 2021 American Society of Civil Engineers. |
| 出版年： | 2021 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 147 |
| 期： | 6 |
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