国产703高强铝合金轴压角铝构件试验

Tests on Domestic 703 High-Strength Aluminum Alloy Angle Members in Axial Compression

摘要:

完成了703铝合金材料的拉伸试验，得到其力学性能和本构关系。对24根国产703高强轴压角铝构件进行了承载力试验，得到该类构件在轴压作用下的极限承载力和破坏模式。建立了数值分析模型，通过试验结果和数值分析结果的对比，验证了数值模型的正确性。完成大量数值分析，分析了构件长细比和截面规格等因素对构件承载力的影响规律。最后，对比了我国规范公式计算得到的稳定系数和试验实测的稳定系数。结果表明，我国 《铝合金结构设计规范：GB 50429—2007》能有效计算国产703高强轴压角铝构件的整体稳定承载力。

Abstract:

In this paper， the tensile tests of 703 aluminum alloys were completed， and their mechanical properties and constitutive relations were obtained. Then， the tests of 24 domestic 703 high-strength axial pressure angle aluminum alloy members were performed， and the ultimate bearing capacity and failure mode of these members was analyzed. Next， a numerical analysis model was established and compared with the test data to verify the correctness of the numerical model. After that， a large number of numerical analyses were completed and the numerical model was used to comprehensively analyze the influence of slenderness ratio， section size， and other factors on the bearing capacity of the component. Finally， the stability coefficient calculated from the existing code formulas and the experimentally measured stability coefficient were compared. The results show that the Chinese "Aluminum Structure Design Code" can effectively calculate the overall stability bearing capacity of the 703 high-strength axial pressure angle aluminum alloy member.