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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7mm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。
The non-linear contact of ABAQUS software was used to simulate the spinning of cylindrical parts. When the thickness of blank is 5mm, the optimum thinning rates of forward and reverse rotation are 32% and 30% respectively, and the ultimate thinning rates of qualified workpieces of primary spinning are 48% and 42% respectively. With the increase of blank wall thickness, the ultimate thinning rate will decrease, and the optimum thinning rate of forward and reverse rotation decreases. When the blank wall thickness reaches 7mm, spinning pressure growth rate will be significantly improved. The research shows that the use of finite element numerical simulation can provide an effective way for the selection of technical parameters, improve product quality and reduce the test process.