A Coupled Finite Element and Element-Free Galerkin Method for Rigid Plastic Problems
The analysis for rigid plastic forming problems with finite element method can lose considerable accuracy due to severely distortional meshes. By measuring the mesh equality of elements, a coupling algorithm for rigid plastic problems have been proposed based on the interface element method, which converts the FE analysis into the EFG computation to preserve the accuracy in the region where meshes have been severely distorted. Numerical example shows that the present algorithms exploit the respective advantages of both the FE method whose computational efficiency is high and the EFG method which can throws out mesh distortions and be suitable for rigid plastic forming analysis.
Daizhong Su, Qingbin Zhang and Shifan Zhu
D. Li et al., "A Coupled Finite Element and Element-Free Galerkin Method for Rigid Plastic Problems", Key Engineering Materials, Vol. 450, pp. 490-493, 2011