摘要
通过有限元数值模拟和工艺试验相结合的方法对板料厚度为0.96mm的TA2M钛板的扩孔成形过程及结果进行了研究。运用PAM-STAMP有限元数值模拟分析软件对成型过程及卸载回弹结果进行预测。发现TA2M在成型卸载回弹后存在明显的形状畸变现象:孔口非圆化,孔口边缘厚度非均匀减薄以及凸缘非圆化。模拟预测结果与工艺试验结果比较吻合。
In this paper, the numerical results are compared with the experimental results of 0.96mm thickness titanium sheets TA2M in the bore - expanding process. The bore - expanding process and results were predicted by PAM -STAMP FEM software. Stronger shape distortions phenomena after springback were found, the expanding hole is not a circle shape, the border of the hole~ thickness become thinner and unhomogeneous, the parts flange is not a circle, the FEM results is accorded with experimentation.
出处
《沈阳航空工业学院学报》
2009年第3期19-21,18,共4页
Journal of Shenyang Institute of Aeronautical Engineering
关键词
形状畸变
有限元模拟
扩孔成形
钛板
shape distortion
FEM
bore - expanding
titanium sheet
