摘要
本文建立了烧结材料平面变形的上限元法(UBET),给出了上限功率计算的优化模型。根据UBET方法预测了烧结材料平板镦粗变形力、致密规律和变形体尺寸,阐明了UBET方法的计算步骤。用烧结铜矩形体作了平面变形实验,并与理论计算进行了比较。
The upper bound elemental technique (UBET) in plane strain for sintered materials has been developed in the paper, and the optimal model for the calculation of upper bound power is given. The deformation load, densification law and workpiece size in plate upsetting for sintered materials are predicted based on the UBET, and calculating procedure of UBET is explained. The experiment with rectangular preform made from sintered copper in plane strain has been made, and theoretical calculations are compared with experimental results.
关键词
烧结体
平面变形
上限元法
sintered materials, UBET(upper bound elemental technique)
plane strain
