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不规则拉延件变形的研究
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英文标题：An Analogical Research into the Deformation Mechanism in Deep Drawing of Irregular Cups |
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作者：李乃周 梁炳文 |
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单位： 北京航空航天大学 北京航空航天大学 |
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出版年,卷(期):页码：1990,15(2):12-23 |
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摘要：
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本文通过构造一有势流场,利用模拟原理确定了不规则拉延件的毛料及其适用圆料的条件,凸缘变形区的流线及滑移线;通过引入流带的概念,分析了拉应力沿模口分布、拉延力及拉延系数,并对零件拉延极限作了近似预测。实验结果表明:毛料、特别是流线与实际情况具有良好的一致性,其他结果也有一定的参考价值。
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Through the establishment of a potential flow field and the analogy theory, the blank contour,the criterion of using circular blank for irregular cups. the flow lines and slip lines are ascertained. By the introduction of an idea about flow band. the distribution of tensile stress along the irregular die throat. and hence the drawing force and draw ratio are analyzed and evaluated,and the approximate limiting draw ratio determined. The blank contour. especially the flow lines, result in. good conformity with the experiments. other results also give a fairly good reference to the farther investigation of this subject.
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作者简介：
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参考文献：
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[1] V. Hasek and K. Lange, Use the slip-line method in deep drawing of large irregular shaped com, portents, NAMRC. Proc. 7th, Dearborn, 1979
[2] H. Glockl and K. Lange,Computer aided design of blanks for deep drawn irregular shaped components. NAMRC. Proc. 11th, 1983
[3] 神马敬,桑原利彦,崔淳哲,凹轮廓有容器深绞加工研究,塑性加工(日本塑性加工学会志)第26卷第294号(1985-7)
[4] C. H. Toh and Shiro Kobayashi, Defor mation analysis and blank design in square cup drawing. Int. J.Mach. Tool Des. Res. Vol.25． No.1． 1985
[5] J. L. Duncan, R. Sowerby, Computer aids in sheet metal engineering, Annals of the CIRP. Vol. 30/2/1981, P541-546
[6] Zhang zhaotao and Liang Bingwen, De termination of blank shapes for drawing irregular cups using an electrical analogue method, Int. J. Mech Sci. Vol. 28, 8, 1986
[7] Lu Xueshan and Liang Bingwen. Modelling of flange deformation of irregular drawn cups using a fluid analogy, ibid
[8] 廖卫献 梁炳文,求不规则压延件展开毛料的热传导模拟法,锻压技术,1988年第3期,p16～22
[9] 盛剑霓等编著,电磁场数值分析,科学出版社,1984
[10] V. Hasek, Bestimmung des Ziehverhalt nisses beim Ziehen von Blechteilen mit komplizierten Formen-Teill. Blech Rohre profile, 33 (1986) 2
[11] 萧夫曼著,梁炳文译,冷压原理,机械工业出版社,1957
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