摘要
本文将大变形理论用于云纹法的应变分析中,采用二维样条函数插值、拟合位移的分布,计算了应变张量的分布。用张力样条函数绘制了它们的等值线图。对非矩形域塑性成形问题,采用扩展延伸成为矩形域的方法进行处理,获得满意结果。
In this paper, the computation of large deformation is introduced into strain analysis from Moire fringe patterns. Applying 2—dimensional cubic spline approximation to fit the displacements in the plane considered, the distribution of the strain tensor is computed. The strain contours are plotted by using tensile spline approximation. When the plastically deformed specimen figure to be analysed is a non-rectangular one, the figure will at first be expanded to a suitable rectangular one and then be calculated. The results thus obtained are satisfactory.
出处
《应用力学学报》
CAS
CSCD
北大核心
1991年第4期95-99,137,共5页
Chinese Journal of Applied Mechanics
