A nonlinear numerical analysis for metal-forming process using the rigid-(visco)plastic element-free Galerkin method

A new approach for isothermal metal-forming process, which is based on the element-free Galerkin (EFG) method for incompressible rigid-(visco)plastic material models, is put forward. The meshless analysis of the non-steady plastic deformation processes with arbitrarily shaped dies is realized. A nai...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2009-05, Vol.42 (1-2), p.83-92
Main Authors: Yanjin, Guan, Xin, Wu, Zhao, Guoqun, Ping, Lu
Format: Article
Language:English
Subjects:
CAE) and Design
Computational fluid dynamics
Computer simulation
Computer-Aided Engineering (CAD
Die forming
Engineering
Finite element method
Galerkin method
Industrial and Production Engineering
Mathematical analysis
Mathematical models
Mechanical Engineering
Media Management
Meshless methods
Nodes
Nonlinear analysis
Numerical analysis
Original Article
Plastic deformation
Strain rate
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Summary:A new approach for isothermal metal-forming process, which is based on the element-free Galerkin (EFG) method for incompressible rigid-(visco)plastic material models, is put forward. The meshless analysis of the non-steady plastic deformation processes with arbitrarily shaped dies is realized. A nail-shaped part-forming process based on the meshless method is analyzed numerically. The flow patterns and the effective strain and effective strain rate obtained by the EFG and finite element methods (FEM) are studied. Obviously, the EFG simulation results are in good agreement with FEM results. It shows that the model and key techniques are effective and accurate. Meanwhile, the influence of the node number on analytical accuracy is remarkable during EFG simulation. The more the node number is, the more accurate the analysis result is. The volume loss decreases with increase of the node number.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-008-1585-3