|
成形极限图及其影响因素
|
|
英文标题： |
|
作者：陈鹤峥 |
|
单位： 北京航空学院704教研室 |
|
关键词： |
|
分类号： |
|
出版年,卷(期):页码：1985,10(5):47-58 |
|
摘要：
|
|
<正> 一、概述利用板料的单向拉伸试验所得的机械性能指标来评定材料的成形性能,是一种最为简便的方法。材料的硬化指数n值大,应变分布比较均匀,有利于拉胀类零件的成形;厚向异性指数r值高,板材不容易变薄,深压延性能就好。但是,根据单向拉伸试验所提供的机械性能指标,只能定性地分析材料完成某一成形工序的难易,而不能直接用来估算具体零件冲压过程的成败。因此,以往
|
|
|
|
基金项目：
|
|
|
|
作者简介：
|
|
|
|
参考文献：
|
[1] S.P.Keeler, "Determination of forming limits in Automotive stampings",SAE 650535．
[2] S.P.Keelar, "Circular grid system-A valuable aid for evaluating sheet metal formability", SAE 680092．
[3] G.M.Goodwin, "Application of strain analysis to sheet metal forming problems in the press shop". SAE 680093．
[4] S.P. Kee(?)er, "Forming limit criteriasheets",1974 Sagamore Conference, Raquette Lake, New York, Aug. 13-16, 127．
[5] C.C.Veerman; P.F.Neve."Some aspects of the determination of the forming limit diagram (ELD)-onest of localized necking", SMI 1972, June, 421．
[6] K. Nakazima.T. Kikuma, K.Hasuka, "Study on the formability of steel sheets", Yawata Technical Report No.264,141．
[7] A.Bragard: J.C.Baret: H.Bonnarens, "A simplified technique to determine the FLD at the onset of necking", IDDRG, Amsterdam. Oct. 1972．
[8] J. Woodthorpe; R. Pearce, "The effect of r and n upon the forming limit diagrams of sheet metal", SMI 1969, Dec. 1061．
[9] T.Kobayashi; H. Ishigaki: T.A(?)e. "Effect of strain ratios on the deforming limit of steel sheet and its application to actual prees for ming", IDDRG Meeting. Amsterdam. Oct. 1972．
[10] L.C.Lie, "A new method in determination of formining limit diagram". SMI 1981． April. 284．
[11] S.S.Hecker, "Simple technique for determining forming limit curves",SMI1975,Nov.67l.
[12] J.Havranek,"Wrin kling limit of tapered pressings",J.of Australian Instiute of Metals 1975． June, 20(2) , 114．
[13] R.Sowerby; J. L. Duncan, "Failure in sheet metal in biaxial tension", In t.J. Mech. Sci. 1971, V 13, 217
[14] A.B.Haberfield; M. W. Boyes, "Modern concepts of sheet metal formability".The Metallugist and Materials Technologist 1975,.Sep. 453．
[15] H.J.Kleemola;M.T.Pelkkikangas."Effect of predeformation and strain path on the forming limits of steel, copper and brass." SMI 1977, June, 591．
[16] J.Hiam; A.Lee. " Factors influencing the forming-limit curves of sheet metal", SMI 1978, May, 631．
[17] P.L.Charpentier, "Influence of punch curvature on the stretching limits of sheet steel", Metallurgical Transactions A 1975, V6A, Aug. 1665．
[18] A.K.Ghosh: S.S.Hecker, "Stretching limits in sheet metals: In plane versus out-of-plane deformation",Metallurgical Transactions 1974,V5, Oct. 2161．
[19] R. Pearce, "A user's guide to forming limit diagrams", SMI 1971, Dec. 943
[20] R.M.Hobbs",Use of grid strain analysis for die development and process control in Australian press shops", SMI 1978, April, 451．
[21] P.Broomhead; R.J.Grieve, "The effect of strain rate on the strain to failure of a sheet steel under biaxial tensile stress conditions", ASME Ser. H, 1982, April, 102．
[22] T.Kikuma; K.Nakazima, " Effects of deforming condition and mechanical properties on the stretch forming limits of steel sheets",proceed- ings ICSTIS. Suppl. Trans. ISIJ. 1971． V(?).827
[23] S.S.Hansen, "The formaoility of dualphase steels". J.Applied metalworking 1982． V2． No. 2． Jan. 107
[24] Chen Hezheng: B.Fogg. "A method of obtaining near-plane strain deformation in sheet metal".SMI 1972 March.284
[25] Chen Hezheng: B.Fogg,"A method of constructing simple forming limit diagram".SMI 1972． June. 512．
[26] 胡世光.“板料冷压成形原理”.国防工业出版社 1979
[27] 唐荣锡.陈鹤峥.陈孝代“.飞机钣金工艺”.国防工业出版社 1983．
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
