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yi zhong xin de yu shi san wei liu dong de shang xian tiao fa (ubst)
Author(s): 
Pages: 82-90
Year: Issue:  4
Journal: Materials Science and Technology

Keyword:  金属成形UBST法宽度三维流动;
Abstract: 本文发展了上限元法(UBET)提出了一种新的予示金属变形过程三维流动的上限条法(upper bound strip technique)。单元内采用平行速度场,单元侧面速度均匀分布且为常数。并将它们作为优化参数,通过总变形功率极小化得出了最佳速度场。用该法予示了矩形截面条形工件的变形力,侧向宽度与纵向延伸,所得结果与文献的实验结果和有限元法计算结果进行了比较,吻合较好。
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