通过热拉伸实验研究5A02铝合金管材在不同温度下的力学性能。根据热拉伸实验结果进行管材热态液压胀形数值模拟,并进行初步的实验研究。数值模拟结果和实验结果表明,5A02铝合金管材的成形性能随着温度的升高而得到明显改善,理想成形温度为200~230℃。对数值模拟结果与实验结果之间的差别进行分析和讨论。
Abstract
The influence of temperature on mechanical properties of 5A02 aluminum tube was investigated first by tensile test.Based on the tensile test results,finite element simulation of tube hydrobulging was carried out to show the formability of 5A02 aluminum tube at elevated temperature.Primary experiment work was also carried out meanwhile.The results of both FEM simulation and hydrobulging experiment showed the same changing tendency of formability of the aluminum tube as the tensile test.The appropriate forming temperature of 5A02 aluminum tube was about 200～230℃.Some possible reasons were given and discussed for the considerable difference between the maximum bulging ratio between FEM simulation result and experimental results.
关键词
铝合金 /
管材 /
液压胀形 /
热态内高压成形
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Key words
aluminum alloy /
tube /
hydrobulging /
warm hydroforming
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参考文献
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脚注
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基金
国家自然科学基金(50375036);国家杰出青年基金(50525516)
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