锻压技术

5083铝合金三通内高压成形模拟研究

英文标题：High inner pressure hydroforming simulation and experiment on Al 5083 T-shape

作者：唐巧生王谌李华冠何雪婷丁月霞赵勇

分类号：TG394

出版年,卷(期):页码：2012,37(1):81-86

摘要：

为探讨5083铝合金等径正三通的内高压成形规律，采用有限元模拟首先分析了成形过程的变形情况，其次研究了壁厚以及应力、应变的分布，用成形时应力、应变的变化解释了形成厚度分布趋势的原因。模拟结果表明，支管顶部壁厚减薄，主管以及与冲头接触处明显增厚。在内高压成形的三通铝合金管在几何尺寸及壁厚分布方面，实验结果与有限元模拟值基本吻合。

To explore the high inner pressure hydroforming characteristics of 5083 alloy straight T-shape tube, firstly the hydroforming situation was studied by FEM numerical simulation. Secondly, the distribution of wall thickness, strain and stress of the tube were investigated and the reason how the tendency of wall thickness distribution formed was explained using the change of strain and stress during the forming process. The simulation results show that a thickness reduction happens on the top of pipe branch, the thickness in the original part and the punch-contacting part of the tube increases. The experimental results are approximately in accordance with the simulative ones in the aspects of the geometry size and thickness distribution during the 5083 alloy T-shape tube hydroforming process.

基金项目：

“核电用不锈钢和钛合金管配件冷挤压成型及产业化”资助项目（BA2006067）

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