...forming limit curve; M−K theory; theoretical prediction; aluminum alloy 2B06; fracture; yield funct[gap=26070]关键词：成形极限曲线；M−K理论；理论预测；2B06铝合金；断裂；屈服准则 ..
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用两种不同的双拉成形技术获取成形极限曲线。
Forming Limit curves (FLCS) are constructed by two different kinds of shrinking methods in the paper.
试验结果表明：加载应变路径的变化会影响成形极限曲线的高低。
It is shown that the change of loading strain path will affect the forming limit curve.
成形极限图通常是通过钢模胀形试验测得，实际测量的成形极限图与ASAME自动应变测试分析系统模拟计算的成形极限曲线吻合较好。
FLD is usually measured with swell test in rigid die. The tested FLD is good fit that one measured by analogue computer in ASAME (Automated Strain Analysis and measure Environment).
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