The Experts below are selected from a list of 9162 Experts worldwide ranked by ideXlab platform
Xianghua Liu - One of the best experts on this subject based on the ideXlab platform.
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prediction of initial velocity field for fast solution of rolling force by fem in strip rolling
THE 11TH INTERNATIONAL CONFERENCE ON NUMERICAL METHODS IN INDUSTRIAL FORMING PROCESSES: NUMIFORM 2013, 2013Co-Authors: Ruibin Mei, L I Changsheng, Ban Cai, Guangliang Zhang, Xianghua LiuAbstract:Finite element method (FEM) has been one of the most important numerical simulation tools with the development of computer technology. However, it is only used to simulate and analyze different process offline in many fields because of larger computational time. The initial velocity field has important influence on the computational time and iteration steps. In order to improve computational efficiency and convergence, the G function (GF), engineering method (EM) and Refined Mesh method (RM) for predicting initial velocity field are discussed, and a GF-RM method (GF and Refined Mesh) is proposed for fast calculation of rigid plasticity FEM. The velocity field, rolling force, computational time and iteration step were solved indifferent strip rolling process. The calculated results have a good agreement with the measured rolling force and the rigid plasticity FEM have higher accuracy. In spite of less iteration steps by GF, larger computational time is consumed on the solution of linear equations results i...
Ruibin Mei - One of the best experts on this subject based on the ideXlab platform.
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prediction of initial velocity field for fast solution of rolling force by fem in strip rolling
THE 11TH INTERNATIONAL CONFERENCE ON NUMERICAL METHODS IN INDUSTRIAL FORMING PROCESSES: NUMIFORM 2013, 2013Co-Authors: Ruibin Mei, L I Changsheng, Ban Cai, Guangliang Zhang, Xianghua LiuAbstract:Finite element method (FEM) has been one of the most important numerical simulation tools with the development of computer technology. However, it is only used to simulate and analyze different process offline in many fields because of larger computational time. The initial velocity field has important influence on the computational time and iteration steps. In order to improve computational efficiency and convergence, the G function (GF), engineering method (EM) and Refined Mesh method (RM) for predicting initial velocity field are discussed, and a GF-RM method (GF and Refined Mesh) is proposed for fast calculation of rigid plasticity FEM. The velocity field, rolling force, computational time and iteration step were solved indifferent strip rolling process. The calculated results have a good agreement with the measured rolling force and the rigid plasticity FEM have higher accuracy. In spite of less iteration steps by GF, larger computational time is consumed on the solution of linear equations results i...
Peter Schröder - One of the best experts on this subject based on the ideXlab platform.
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Edge subdivision schemes and the construction of smooth vector fields
ACM Transactions on Graphics, 2006Co-Authors: Ke Wang, Weiwei, Yiying Tong, Mathieu Desbrun, Peter SchröderAbstract:Vertex- and face-based subdivision schemes are now routinely used in geometric modeling and computational science, and their primal/dual relationships are well studied. In this paper, we interpret these schemes as defining bases for discrete differential 0- resp. 2-forms, and complete the picture by introducing edge-based subdivision schemes to construct the missing bases for discrete differential 1-forms. Such subdivision schemes map scalar coefficients on edges from the coarse to the Refined Mesh and are intrinsic to the surface. Our construction is based on treating vertex-, edge-, and face-based subdivision schemes as a joint triple and enforcing that subdivision commutes with the topological exterior derivative. We demonstrate our construction for the case of arbitrary topology triangle Meshes. Using Loop's scheme for 0-forms and generalized half-box splines for 2-forms results in a unique generalized spline scheme for 1-forms, easily incorporated into standard subdivision surface codes. We also provide corresponding boundary stencils. Once a metric is supplied, the scalar 1-form coefficients define a smooth tangent vector field on the underlying subdivision surface. Design of tangent vector fields is made particularly easy with this machinery as we demonstrate.
Guangliang Zhang - One of the best experts on this subject based on the ideXlab platform.
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prediction of initial velocity field for fast solution of rolling force by fem in strip rolling
THE 11TH INTERNATIONAL CONFERENCE ON NUMERICAL METHODS IN INDUSTRIAL FORMING PROCESSES: NUMIFORM 2013, 2013Co-Authors: Ruibin Mei, L I Changsheng, Ban Cai, Guangliang Zhang, Xianghua LiuAbstract:Finite element method (FEM) has been one of the most important numerical simulation tools with the development of computer technology. However, it is only used to simulate and analyze different process offline in many fields because of larger computational time. The initial velocity field has important influence on the computational time and iteration steps. In order to improve computational efficiency and convergence, the G function (GF), engineering method (EM) and Refined Mesh method (RM) for predicting initial velocity field are discussed, and a GF-RM method (GF and Refined Mesh) is proposed for fast calculation of rigid plasticity FEM. The velocity field, rolling force, computational time and iteration step were solved indifferent strip rolling process. The calculated results have a good agreement with the measured rolling force and the rigid plasticity FEM have higher accuracy. In spite of less iteration steps by GF, larger computational time is consumed on the solution of linear equations results i...
Ban Cai - One of the best experts on this subject based on the ideXlab platform.
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prediction of initial velocity field for fast solution of rolling force by fem in strip rolling
THE 11TH INTERNATIONAL CONFERENCE ON NUMERICAL METHODS IN INDUSTRIAL FORMING PROCESSES: NUMIFORM 2013, 2013Co-Authors: Ruibin Mei, L I Changsheng, Ban Cai, Guangliang Zhang, Xianghua LiuAbstract:Finite element method (FEM) has been one of the most important numerical simulation tools with the development of computer technology. However, it is only used to simulate and analyze different process offline in many fields because of larger computational time. The initial velocity field has important influence on the computational time and iteration steps. In order to improve computational efficiency and convergence, the G function (GF), engineering method (EM) and Refined Mesh method (RM) for predicting initial velocity field are discussed, and a GF-RM method (GF and Refined Mesh) is proposed for fast calculation of rigid plasticity FEM. The velocity field, rolling force, computational time and iteration step were solved indifferent strip rolling process. The calculated results have a good agreement with the measured rolling force and the rigid plasticity FEM have higher accuracy. In spite of less iteration steps by GF, larger computational time is consumed on the solution of linear equations results i...
