论文部分内容阅读
Drigid 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 decompositon 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 parameterψand the results of simulation for processing parameters are analysed.Numerical tests and application of this technique verify the effciency and stability of the shifted ICCG method in the analysis of slad edging.
Drigid 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 decompositon 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 terms of the number of iterations, friction variation, shifted parameterψand the results of simulation for processing parameters are analysed. Numerical tests and application of this technique verify the effciency and stability of the shifted ICCG method in the analysis of slad edging.