Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Effect of Blank Shapes on the Impact Safety of Stamped Parts

충돌안전성에 미치는 블랭크형상의 영향

  • Published : 2008.06.01
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Abstract

The effects of blank shape on the safety of stamped parts are studied through the comparison of an optimal blank and the corresponding reference blank shape to show further advantage of the optimal blank. In order to carry out this study, stamping process has been analyzed and the forming history, e.g. accumulated effective strain and thickness has been incorporated in the crash analysis. The reference blank has been determined following to the actual industry guideline, and excessive material to the desired shape has been trimmed off before crash analysis for the objective comparison. Through the study, appreciable increase of impact safety has not been observed and the effective of blank shape is verified not to be significant.

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References

  1. Amit Shukla, 1997, Simulation of quasi-static tension test for roadside hardware material using LS-DYNA3D, Project Report Nonlinear Finite Element Analysis
  2. H. Kurtaran, M. Buyuk, A. Eskandarian, 2003, Ballistic impact simulation of GT model vehicle door using finite element method, Theoretical and Applied Fracture Mechanics 40, pp. 113-121 https://doi.org/10.1016/S0167-8442(03)00039-9
  3. H. Mikami, H. Suzuki, M. Ishizawa, Y. Matsuoka, 1999, Crash simulation considered influence of stamping, Proc. of HANPAM'99, pp. 187-200
  4. A. Kellicut, B. Cowell, K. Kavikondala, T. Dutton, S. Iregbu, R. sturt, 1999, Application of the results of Forming Simulation in crash models, Proc. of NUMISHEET'99, pp. 509-514
  5. S. H. Kim, H. Huh, 2002, Inverse Finite Element Anaysis of Autobody Structures with a Direct Mesh Mapping Method for Crash Analysis Considering Forming Effects, Trans. Materials Processing Vol. 11, No. 5, pp. 457-464 https://doi.org/10.5228/KSPP.2002.11.5.457
  6. H. Huh, S. B. Kim, 2007, Testing Equipments for the Evaluation of Dynamic Tensile Characteristics and the Crashworthiness of Auto-body Members, KSTP Autumn Conference, pp. 21-24
  7. K. C. Son, H. B. Shim, H. T. Hwang, Verification of Sensitivity Method for the Design of Optimal Blanks of General Shaped Parts, Trans. Materials Processing, Vol. 10, No. 1, pp. 15-22
  8. H. B. Shim, J. K. Park, 2003, Development of Stamping Optimization through the Integration of Blank Design and Nesting, Trans. Materials Processing, Vol. 12, No. 7, pp. 615-622 https://doi.org/10.5228/KSPP.2003.12.7.615
  9. E. Markiewicz, P. Ducrocq, P. Drazetic, 1998, An inverse approach to determine the constitutive model parameters from axial crushing of thinwalled square tubes, Int. J. Impact Engineering, Vol.21, No. 6, pp. 433-449 https://doi.org/10.1016/S0734-743X(98)00004-9
  10. P. Cunat, 2000, Stainless steel properties for structural automotive applications, The European Stainless Steel Development Association, Metal Bulletin International Automotive Materials Conference, 21st to 23rd
  11. H. Huh, J. H. Lim, 2002, High strain-rate test of Sinter-forged Cu-Cr with split Hopkinson pressure bar, Plasticity 2002, pp. 645-647