Calculation Method of Axial Compressive Capacity of 7075-T6 Aluminum Alloy Rectangular Tubes Based on Continuous Strength Method
This study systematically investigates the axial compression capacity calculation method for 7075-T6 aluminum alloy rectangular hollow section (RHS) members based on the Continuous Strength Method (CSM). Axial compression tests were conducted on nine RHS specimens using a YAW-500 electro-hydraulic s...
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MDPI AG
2025-07-01
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| Online Access: | https://www.mdpi.com/2075-5309/15/14/2387 |
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| author | Zhiguan Huang Hailin Li Cheng Zhang Junli Liu |
| author_facet | Zhiguan Huang Hailin Li Cheng Zhang Junli Liu |
| author_sort | Zhiguan Huang |
| collection | DOAJ |
| description | This study systematically investigates the axial compression capacity calculation method for 7075-T6 aluminum alloy rectangular hollow section (RHS) members based on the Continuous Strength Method (CSM). Axial compression tests were conducted on nine RHS specimens using a YAW-500 electro-hydraulic servo testing machine, and nonlinear finite element models considering material plasticity and geometric imperfections were established using ABAQUS/CAE. The numerical results showed good agreement with experimental data, verifying the model’s reliability. Parametric analysis was then performed on RHS members, leading to the development of a CSM-based capacity calculation method and a modified curve for predicting the stability reduction factors of square hollow section members. The approach combining this modified curve with Chinese codes is termed the Modified Chinese Code Method. The axial capacities calculated by the CSM-based method, Modified Chinese Code Method, EN 1999-1-1, and AASTM were compared for accuracy evaluation. The conclusions indicate that the proposed modified curve provides more accurate predictions of stability coefficients for square tubes, and the CSM-based method yields more precise capacity predictions than existing international design codes, though it may overestimate the capacity for Class 4 cross-section members and thus requires further refinement. |
| format | Article |
| id | doaj-art-aabe058d1cca40aa9b7cd7c538c4eefb |
| institution | Kabale University |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
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| series | Buildings |
| spelling | doaj-art-aabe058d1cca40aa9b7cd7c538c4eefb2025-08-20T03:36:19ZengMDPI AGBuildings2075-53092025-07-011514238710.3390/buildings15142387Calculation Method of Axial Compressive Capacity of 7075-T6 Aluminum Alloy Rectangular Tubes Based on Continuous Strength MethodZhiguan Huang0Hailin Li1Cheng Zhang2Junli Liu3Guangxi Guitong Engineering Management Group Co., Ltd., Nanning 532704, ChinaGuangxi Airport Management Group Nanning Wuwei International Airport Co., Ltd., Nanning 530227, ChinaGuangxi Key Laboratory of Green Building Materials and Construction Industrialization, Guilin University of Technology, Gui’lin 541004, ChinaGuangxi Key Laboratory of Green Building Materials and Construction Industrialization, Guilin University of Technology, Gui’lin 541004, ChinaThis study systematically investigates the axial compression capacity calculation method for 7075-T6 aluminum alloy rectangular hollow section (RHS) members based on the Continuous Strength Method (CSM). Axial compression tests were conducted on nine RHS specimens using a YAW-500 electro-hydraulic servo testing machine, and nonlinear finite element models considering material plasticity and geometric imperfections were established using ABAQUS/CAE. The numerical results showed good agreement with experimental data, verifying the model’s reliability. Parametric analysis was then performed on RHS members, leading to the development of a CSM-based capacity calculation method and a modified curve for predicting the stability reduction factors of square hollow section members. The approach combining this modified curve with Chinese codes is termed the Modified Chinese Code Method. The axial capacities calculated by the CSM-based method, Modified Chinese Code Method, EN 1999-1-1, and AASTM were compared for accuracy evaluation. The conclusions indicate that the proposed modified curve provides more accurate predictions of stability coefficients for square tubes, and the CSM-based method yields more precise capacity predictions than existing international design codes, though it may overestimate the capacity for Class 4 cross-section members and thus requires further refinement.https://www.mdpi.com/2075-5309/15/14/2387aluminum alloy structureaxial compression testcontinuous strength method |
| spellingShingle | Zhiguan Huang Hailin Li Cheng Zhang Junli Liu Calculation Method of Axial Compressive Capacity of 7075-T6 Aluminum Alloy Rectangular Tubes Based on Continuous Strength Method Buildings aluminum alloy structure axial compression test continuous strength method |
| title | Calculation Method of Axial Compressive Capacity of 7075-T6 Aluminum Alloy Rectangular Tubes Based on Continuous Strength Method |
| title_full | Calculation Method of Axial Compressive Capacity of 7075-T6 Aluminum Alloy Rectangular Tubes Based on Continuous Strength Method |
| title_fullStr | Calculation Method of Axial Compressive Capacity of 7075-T6 Aluminum Alloy Rectangular Tubes Based on Continuous Strength Method |
| title_full_unstemmed | Calculation Method of Axial Compressive Capacity of 7075-T6 Aluminum Alloy Rectangular Tubes Based on Continuous Strength Method |
| title_short | Calculation Method of Axial Compressive Capacity of 7075-T6 Aluminum Alloy Rectangular Tubes Based on Continuous Strength Method |
| title_sort | calculation method of axial compressive capacity of 7075 t6 aluminum alloy rectangular tubes based on continuous strength method |
| topic | aluminum alloy structure axial compression test continuous strength method |
| url | https://www.mdpi.com/2075-5309/15/14/2387 |
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