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ANALYSIS OF
SLAB EDGING BY A 3-D RIGIDVISCO-
PLASTIC FINITE ELEMENT METHOD*
Zhang Xiaoming Jiang Zhengyi Liu Xianghua Wang Guodong
State Key
Laboratory of Rolling Technology and Automation, Northeastern
University,
Shenyang 110006, China |
Abstract:
3-D rigid visco-plastic finite element method (FEM) is used in
the analysis of metal forming processes, including strip and
plate rolling, shape rolling, slab edging, special strip
rolling. The shifted incomplete Cholesky decomposition of the
stiffness matrix with the solution of the equations for velocity
increment by the conjugate gradient method is combined. This
technique, termed the shifted ICCG method, is then employed to
solve the slab edging problem. The performance of this algorithm
in terms of the number of iterations, friction variation,
shifted parameter
y
and the results of simulation for processing parameters are
analysed. Numerical tests and application of this technique
verify the efficiency and stability of the shifted ICCG method
in the analysis of slab edging.
Key words:
3-D
rigid visco-plastic FEM Shifted ICCG method Slab edging
Friction variation
* This Project is supported
by Huo Yingdong Young Teachers Foundation, Ministry of State Education
of China and National Natural Science Foundation of China (No.59904003).
Received October 9, 2000; received in revised form April 25, 2001;
accepted September 30, 2001
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