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对薄壁不锈钢管环压接头的管坯成形进行了研究,用Ansys有限元分析软件LS-DYNA模块模拟分析了管坯在成形过程中轴向收缩和径向回弹所引起尺寸的变化,对模拟结果与实验数据进行了对比分析。结果表明,管坯在成形过程中发生显著的轴向收缩,收缩尺寸为28.52 mm,轴向尺寸补偿后,管坯最优截取长度为128.52 mm。管坯成形后在径向和轴向发生回弹,其中径向最大回弹尺寸出现在承口起包处,尺寸大小为0.34 mm,管坯其余管身的回弹尺寸为0.25 mm,需要补偿相应的尺寸。
The forming of thin-walled stainless steel tube ring was studied. The change of size caused by axial shrinkage and radial rebound during the forming process was simulated by Ansys finite element analysis software LS-DYNA. The simulation results and the experimental data were compared. The results show that the tube has a significant axial shrinkage during the forming process with a shrinkage dimension of 28.52 mm. After the axial dimension compensation, the optimum length of the tube blank is 128.52 mm. After the billet was formed, the bombs rebounded in the radial and axial directions. The radial maximum rebound occurred at the socket and the size of the billet was 0.34 mm. The rebound size of the remaining billet of the billet was 0.25 mm, which required compensation The corresponding size.