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Stress-Based Topology Optimization of Steel-Frame Structures Using Members with Standard Cross Sections: Gradient-Based Approach
| 题名： | Stress-Based Topology Optimization of Steel-Frame Structures Using Members with Standard Cross Sections: Gradient-Based Approach |
| 正文语种： | 英文 |
| 作者： | Navid Changizi, S.M.ASCE;Mehdi Jalalpour, A.M.ASCE |
| 作者单位： | Cleveland State Univ |
| 关键词： | Steel structures; Stress-based topology optimization; von Mises stress; Frame structures; Regression analysis. |
| 摘要： | This article presents a computationally efficient methodology for stress-based topology optimization of steel frame structures with cross-sectional properties that are mapped from I-beam sections of a design manual. To account for the natural variability of the data, this mapping is achieved via quantile regression to derive continuous relationships between cross-sectional area (the design variable) and other section properties. These relationships are used for deriving the gradient of structural performance, which allows using computationally efficient gradient-based optimization schemes. Three frame structures are designed using the proposed algorithm, the resulting designs are compared with traditional compliance-based topology optimization algorithms, and changes in the designs are discussed. A comparison of stress distribution within the designed structures verified the effectiveness of the proposed methodology. DOI: 10.1061/(ASCE)ST.1943 -541X.0001807. © 2017 American Society of Civil Engineers. |
| 出版日期： | 2017.08 |
| 出版年： | 2017 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.143 |
| 期： | NO.08 |
| 页码： | 04017078 |
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