The present work introduces a new type of numerical analyzing method: the contact element method with two relative coordinates (CEM). The main characteristic of the procedure is elements meshing on the basis of the contact length between objects and that each element has two relative coordinates. The ordinary expression of this procedure is DX[CXY(i)]=DY[CYX(i)]⁠. Through this method, the CEM function of the 20-high Sendzimir mill and the deflection function expression of every roll are obtained. A computational software SM4SM for the Sendzimir mill has been developed, by which the deflection condition of rolls S⁠, O⁠, I⁠, and A can be obviously seen. The results obtained by CEM have also been compared to that by the finite element method.

Issue Section:
Research Papers
Keywords:
numerical analysis, rolling mills, Sendzimir mill, roll deflection, numerical analysis, contact element method
Topics:
Deflection
1.
Schneider
,
A.
, and
Werners
,
R.
, 1999, “
Modeling and Optimization for a 20-h Cold Rolling Mill
,”
Iron Steel Eng.
0021-1559,
76
, pp.
44
–
47
.
2.
Berger
,
B.
,
Schulte
,
H.
,
Benfer
,
M.
, and
Rinke
,
F. W.
, 2000, “
Advanced 20-High Mill Technology
,”
MPT, Metall. Plant Technol. Int.
0935-7254,
23
(
6
), pp.
70
–
72
, 74.
3.
Dutton
,
K.
, 1983, “
An Investigation Into the Design and Performance of an Automatic Shape Control System for a Sendzimir Cold Rolling Mill
,” British Steel Corp.
4.
Gunawardene
,
G. W. D. M.
, 1982, “
A Static Model of a Sendzimir Mill for Use in Shape Control
,” British Steel Corp.
5.
Knapiński
,
M.
, 2006, “
The Numerical Analysis of Roll Deflection During Plate Rolling
,”
J. Mater. Process. Technol.
0924-0136,
175
, pp.
257
–
265
.
Crossref
Search ADS
 
6.
Jiang
,
Z. Y.
,
Tieu
,
A. K.
,
Zhang
,
X. M.
,
Lu
,
C.
, and
Sun
,
W. H.
, 2003, “
Finite Element Simulation of Cold Rolling of Thin Strip
,”
J. Mater. Process. Technol.
0924-0136,
140
, pp.
542
–
547
.
Crossref
Search ADS
 
7.
Yuen
,
W. Y. D.
,
Duval
,
A.
, and
Wechner
,
B.
, 1998, “
A New Formulation for the Analysis of Strip Flatness in Strip Rolling
,” Steel Rolling’s 98, Chiba, Japan, The Iron and Steel Institute of Japan, pp.
296
–
301
.
8.
Xiong
,
S.
,
Liu
,
X.
, and
Wang
,
G.
, 2000, “
Analysis of Non-Steady State Slab Edging in Roughing Trains by a Three-Dimensional Rigid-Plastic Finite Element Method
,”
Int. J. Mach. Tools Manuf.
0890-6955,
40
(
11
), pp.
1573
–
1585
.
Crossref
Search ADS
 
9.
Yu
,
H.
,
Liu
,
X.
,
Zhao
,
X.
, and
Kusaba
,
Y.
, 2006, “
FEM Analysis for V–H Rolling Process by Updating Geometric Method
,”
J. Mater. Process. Technol.
0924-0136,
180
(
1-3
), pp.
323
–
327
.
Crossref
Search ADS
 
10.
Pan
,
C.
, 2003,
20-High Mill and High Precision of Cold Strip Rolling Production
,
Metallurgical Industry Press
, Beijing.
Copyright © 2008
 by American Society of Mechanical Engineers
You do not currently have access to this content.