SURFACE ASPERITY DEFORMATION DURING SHEET FORMING

被引：79

作者：

KORZEKWA, DA

DAWSON, PR

WILSON, WRD

机构：

[1] NORTHWESTERN UNIV,DEPT MECH ENGN,EVANSTON,IL 60208

[2] CORNELL UNIV,SIBLEY SCH MECH & AEROSP ENGN,ITHACA,NY 14853

来源：

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 1992年 / 34卷 / 07期

基金：

美国能源部;

关键词：

D O I：

10.1016/0020-7403(92)90028-F

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A model for the flattening of asperities on the surface of a sheet undergoing plastic deformation is proposed. A viscoplastic finite element analysis was used to determine the effect Of strain rate and straining direction on the rate of flattening of two dimensional asperities resulting from a normal pressure applied with a smooth tool. The strain rate components in the plane of the sheet are treated as independent of the normal pressure. The results can be used to model the evolution of the contact area fraction at the interface as a function of the straining direction in the sheet and the normal pressure.

引用

收藏

页码：521 / 539

页数：19

相关论文

共 15 条

[1]

Bowden F. P., 1964, FRICTION LUBRICATI 2

[2] AN INTERNAL VARIABLE CONSTITUTIVE MODEL FOR HOT-WORKING OF METALS [J].

BROWN, SB ;

KIM, KH ;

ANAND, L .

INTERNATIONAL JOURNAL OF PLASTICITY, 1989, 5 (02) :95-130

[3] ASSESSMENT OF A THERMOVISCOPLASTIC MODEL OF UPSET WELDING BY COMPARISON TO EXPERIMENT [J].

EGGERT, GM ;

DAWSON, PR .

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 1986, 28 (09) :563-589

[4] AN ADAPTIVE DESCENT METHOD FOR NONLINEAR VISCOPLASTICITY [J].

EGGERT, GM ;

DAWSON, PR ;

MATHUR, KK .

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, 1991, 31 (06) :1031-1054

[5] A CONSTITUTIVE DESCRIPTION OF THE DEFORMATION OF COPPER BASED ON THE USE OF THE MECHANICAL THRESHOLD STRESS AS AN INTERNAL STATE VARIABLE [J].

FOLLANSBEE, PS ;

KOCKS, UF .

ACTA METALLURGICA, 1988, 36 (01) :81-93

[6] METHOD FOR DETERMINING COEFFICIENT OF FRICTION IN PUNCH STRETCHING OF SHEET METALS [J].

GHOSH, AK .

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 1977, 19 (08) :457-&

[7]

JOHNSON W, 1982, PLANT STRAIN SLIP LI

[8] Obtaining Residual Stresses in Metal Forming After Neglecting Elasticity on Loading [J].

Lee, Yong-Shin ;

Dawson, Paul R. .

JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME, 1989, 56 (02) :318-327

[9] A FINITE-ELEMENT ANALYSIS OF FLATTENING OF SURFACE ASPERITIES BY PERFECTLY LUBRICATED RIGID DIES IN METAL WORKING PROCESSES [J].

MAKINOUCHI, A ;

IKE, H ;

MURAKAWA, M ;

KOGA, N .

WEAR, 1988, 128 (02) :109-122

[10] ON THE MECHANISM BEHIND THE PUNCH BLANK SURFACE CONFORMATION IN STRETCH-FORMING AND DEEP-DRAWING [J].

SENGUPTA, AK ;

FOGG, B ;

GHOSH, SK .

JOURNAL OF MECHANICAL WORKING TECHNOLOGY, 1981, 5 (3-4) :181-210