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筒形件旋压成形的有限元数值模拟研究
英文标题:Finite element numerical simulation of tube spinning
作者:孙正峰 王少华 
单位:西南交通大学 
关键词:减薄率 旋压成形 非线性接触 
分类号:TG376
出版年,卷(期):页码:2012,37(5):171-175
摘要:

运用ABAQUS软件的非线性接触对筒形件旋压成形进行数值模拟。当毛坯壁厚为5mm时,正旋和反旋最适减薄率分别为32%和30%,一次旋压合格工件的极限减薄率分别为48%和42%。随着毛坯壁厚的增加,极限减薄率将减小,且正旋和反旋的最适减薄率也随之减小。当毛坯壁厚达到7 mm时,旋压力的增长率将明显提高。研究表明,利用有限元数值模拟可为选定工艺技术参数、提高产品质量和减少试加工过程提供有效的途径。

Tube spinning was simulated using nonlinear contact of ABAQUS software. When the blank wall thickness was 5 mm, the forward and backward spinning's optimal thinning rates were 32% and 30% respectively and also the limit thinning rate of qualified workpieces in a spinning were 48% and 42% respectively. With the blank wall thickness increasing, the limit thinning rate and the optimal thinning rate of forward and backward spinning would be reduced. When the blank wall thickness achieved 7 mm, the growth rate of spinning pressure would be increased significantly. The research shows that using finite element numerical simulation can provide an effective way to select technical parameters, improve product quality and reduce trial processing process.

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