Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Development of Algorithm for Two Dimensional Automatic Mesh Generation and Remeshing Technique Using Bubble Packing Method (II) - Nonlinear Analysis -

버블패킹방법을 이용한 2차원 자동격자 생성 및 재구성 알고리듬 개발 (II) -비선형 해석-

  • Published : 2001.12.01
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Abstract

In this second part of the paper, the automatic mesh generation and remeshing algorithm using bubble packing method is applied to the nonlinear problem. The remeshing/refinement procedure is necessary in the large deformation process especially because the mesh distortion deteriorates the convergence and accuracy. To perform the nonliear analysis, the transfer of state variables such as displacement and strain is added to the algorithm of Part 1. The equilibrium equation based on total Lagrangian formulation and elasto-viscoplastic model is used. For the numerical experiment, the upsetting process including the contact constraint condition is analyzed by two refinement criteria. And from the result, it is addressed that the present algorithm can generate the refined meshes easily at the largely deformed area with high error.

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References

  1. Khoei, Amir R. and Lewis, Roland W., 1999, 'Apdaptive Finite Dlement Remeshing in a Large Deformation Analysis of Metal Powder Forming
  2. Yaung Henry T.Y., ;Martin Heinstein. and Shih. J.M., 1989, 'Adaptive 2D Finite Element Simulation of Metal Forming Processes,' Int. J. Numer. Methods Eng., pp. 1409-1428 https://doi.org/10.1002/nme.1620280612
  3. Cheng Jung-Ho, 1988, 'Automatic Adaptive Remeshing for Finite Element Simulation of Forming Process,' Int. J. Numer. Metohds Eng., 26, pp. 1-18 https://doi.org/10.1002/nme.1620260102
  4. 강연식, 박치용, 조종래, 양동열, 1992, '평금형을 이용한 축대칭 열간 압출의 유한요소해석,' 대한기계학회논문집, 16(2), pp. 207-225
  5. 이낙규, 박치용, 윤정호, 양동열, 1993, '단위체격자 재구성법과 약형격자 재구성을 이용한 3차원 볼단조의 유한요소 해석,' 대한기계학회논문집, 17(4), pp. 863-872
  6. PavanaChand Ch. and KrishnaKumar, R., 1998, 'Remeshing Issues in the Finite Element Analysis of Metal Forming Problems,' Journal of Materials Processing Technology, 775, pp. 63-74 https://doi.org/10.1016/S0924-0136(97)00293-8
  7. Habraken, AM. and Cescotto, S., 1990, 'An Automatic Remeshing Technique for Finite Element Simulation of Forming Processes,' Int. J. Numer. Methods Eng., 30, pp. 1503-1525 https://doi.org/10.1002/nme.1620300811
  8. 조해규, 채수원, 박종진, 1996, '대변형 유한요소해석에서의 요소망의 재구성을 위한 기준,' 한국정밀공학회지, 13(10), pp. 78-87
  9. 정순완, 김승조, 2001, '버플패킹방법을 이용한 2차원 자동격자 생성 및 재구성 알고리듬 개발(I) -선형해석-,' 대한기계학회 논문집 A권, 25(6), pp. 1004-1014
  10. Kim Seung Jo and Chung Soon Wan, 1998, 'Numerical Sumulation of Finite Rotation Based on Strain Kinematics by Polar Decomposition,' International Conference on Computational Engineering and Science, pp. 691-696, Atlanta, GA, October 6-9
  11. Kim, S.J. and Oden, J.T., 1985, 'Finite Dlement Analysis of a Class of Problem in Finite Elastoplasticity Based on the Thermodynamical Theory of Type N,' Comput.Methods Appl.Mech. Eng., 53, pp. 277-307 https://doi.org/10.1016/0045-7825(85)90119-7
  12. Kim Seung Jo and Kim Jin Hee, 1993, 'Finite Element Analysis of Laminated Composites with Contact Constraint by Extended Interior Penalty Methods,' Int. J. Numer. Methods Eng., 36, pp. 3421-3439 https://doi.org/10.1002/nme.1620362003
  13. Liu, D., Luo, Z. J. and Gu, M.X., 1998, 'The Algorithm of Automatic Local Mesh Subdivision and its Application to Finite-Element Analysis of a Large Deformation Forming Process,' Journal of Materials Processing Technology, 83, pp. 164-169 https://doi.org/10.1016/S0924-0136(98)00056-9