Three dimension profile extrusion simulation using meshfree method |
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Authors: | Hongyu Wen Xianghuai Dong Cunliang Yan Xueyu Ruan |
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Affiliation: | (1) Department of Plasticity Forming Engineering, Shanghai Jiao Tong University, Shanghai, 200030, People’s Republic of China |
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Abstract: | A meshfree method based on reproducing kernel approximation and point collocation is presented for analysis of 3D profile
extrusion processes. The point collocation method is a true meshfree method without the employment of a background mesh. We
show that, in a point collocation approach, the implementation of program does not need the background mesh, which is a very
time consuming process in a Galerkin method for integration. Among the points of the meshfree model, there is no connecting
information. A mesh quality control method with mold interpenetration checking based on the Delaunay Bowyer-Watson algorithm
is introduced to produce the topological relations, which enable us to show meshfree simulation results using the same procedure
as in the finite element method. A C-shape profile extrusion application example is presented and compared with the finite
element method to verify the proposed method. |
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Keywords: | Meshfree method Point collocation Metal extrusion Elasto-plasticity Frictional contact Delaunay tetrahedron Post-processing |
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