Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Finite Element Analysis of Manufacturing Process of a 12 Point Flange Head Bolt with Emphasis on Thread Rolling Process

나사전조공정을 중시한 12각플랜지볼트의 나사제조공정의 유한요소해석

  • Received : 2010.03.22
  • Accepted : 2010.05.26
  • Published : 2010.07.01
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Abstract

In this paper, three-dimensional finite element analysis of thread rolling process of a 12 point flange head bolt is conducted using a rigid-plastic finite element method based metal forming simulator AFDEX 3D. A whole sequence of cold forming processes of a long shaft bolt composed of four forging stages and final thread rolling process is simulated to reveal the mechanism of thread formation. A mesh density control function is applied near the major plastic deformation region to achieve computational efficiency. It has been shown both numerically and experimentally that longitudinal lengthening or shortening is negligible in thread rolling.

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References

  1. J. H. Kim, 2004, A comparative study about the antiabrasional property of thread rolling dies of biomaterial joining method, Yeungnam University, Master’s degree thesis.
  2. J. P. Domblesky, F. Feng, 2002, A parametric study of process parameters in external thread rolling, J. Mater. Proc. Technol., Vol. 121, pp. 341-349. https://doi.org/10.1016/S0924-0136(01)01223-7
  3. Y. C. Kao, H. Y. Cheng, C. H. She, 2006, Development of an integrated CAD/CAE/CAM system on taper-tipped thread-rolling die-plates, J. Mater. Proc. Technol., Vol. 177, pp. 98-103. https://doi.org/10.1016/j.jmatprotec.2006.04.082
  4. Z. Pater, A. Gontaz, W. Weron-ski, 2004, New method of thred rolling, J. Mater. Proc. Technol., Vol. 153-154, pp. 722-728. https://doi.org/10.1016/j.jmatprotec.2004.04.154
  5. K. H. Kim, D. H. Kim, D. C. Ko, B. M. Kim, 2002, Characteristics evaluation of process parameters for improvement the precision of thread rolling in lead screw", Proc. KSPE 2002 Autumn Conf., pp. 312-315.
  6. www.afdex.com
  7. M. S. Joun, J. G. Eom, M. C. Lee, 2008, A new method for acquiring true stress-strain curves over a large of strains using a tensile test and finite element method. Mechanics of Material Vol. 40, No.7, pp. 586-593. https://doi.org/10.1016/j.mechmat.2007.11.006
  8. M. S. Joun, J. G. Eom., M. C. Lee, J. H. Park, 2008, Tensile test based material identification program AFDEX/MAT and its application to two new preheat treated steels and a conventional CR-MO steel. International Journal of Modern Physics B, Vol. 22, pp. 5774-5779. https://doi.org/10.1142/S0217979208051157

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