Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지

Variation of Impact Characteristics of ISB Panels with a Pyramidal Inner Structure According to Joining Technologies

피라미드형 내부구조체를 가진 ISB 판넬의 접합형태에 따른 충격 특성 변화

  • Published : 2007.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

ISB (Inner structured and bonded) panel with a pyramidal inner structure is actively developing to reduce the weight and to improve the crashworthiness of the material. The objective of this paper is to investigate into the variation of impact characteristics of ISB panels with a pyramidal inner structure according to joining types between skin sheets and inner structures. Several drop impact tests have been performed. In order to examine the impact characteristics at a drawing condition, drawing type of experimental set-up has been proposed. From the results of the experiments, the influence of joining types between skin sheets and the inner structures on the characteristics of the deformation, the energy absorption and the failure has been quantitatively examined. In addition, it has been shown that maximum load decreased and the maximum displacement increases as the joining type changes from the bonding to the welding. The results of the observation of the specimen have been shown that major wrinkles form in the minor crimping direction irrespective of the joining types. Through the comparison of the experimental results for bonding and welding specimens, it has been shown that the absorption energy of the bonded specimen is nearly 1.3-1.5 times of the welded specimen at the same displacement.

Keywords

References

  1. Schubert, E., Klassen, M., Zemer, I., Walz, C. and Sepold, G, 'Light-weight Structures Produced by Laser Beam Joining for Future Applications in Automobile and Aerospace industry,' Journal of Materials Processing Technology, Vol. 115, Issue1, pp. 2 - 8, 2001 https://doi.org/10.1016/S0924-0136(01)00756-7
  2. Evans, A. G., Hutchinson, J. W. and Ashby, M. F., 'Multifunctionality of Cellular Metal Systems,' Progress in Materials Science, Vol. 43, Issue 3, pp. 171-221,1999 https://doi.org/10.1016/S0079-6425(98)00004-8
  3. Zok, F. W., Waltner, S. A., Wei, Z., Rathbun, H. J., McMeeking, R. M. and Evans, A. G, 'A Protocol of Characterizing the Structural Performance of Metallic Sandwich Panels : Application to Pyramidal Truss Cores,' International Journal of Solids and Structures, Vol. 41, Issues 22-23, pp. 6249 - 6271, 2004
  4. Wadley, H. N. G, 'Cellular Metals Manufacturing,' Advanced Engineering Materials, Vol. 43, Issue 10, pp. 726-733, 2002
  5. Wang, A. and McMowel, D. L., 'Optimization of a Metal Honeycomb Sandwich Beam-bar Subjected to Torsion and Bending,' International Journal of Solids and Structures, Vol. 40, Issue 9, pp. 2085-2099, 2003 https://doi.org/10.1016/S0020-7683(03)00033-7
  6. Liu, J. S. and Lu, T. J., 'Multi-objective and Multiloading Optimization of Ultralightweight Materials,' International Journal of Solids and Structures, Vol. 41, Issues 3-4, pp. 619-635, 2004 https://doi.org/10.1016/j.ijsolstr.2003.10.003
  7. Jung, C. C., Yoon, S. J., Yang, D. Y, Lee, S. M., Na, S. J., Lee, S. H. and Ahn, D. G, 'Fabrication and Static Bending Test in Ultra Light Inner Structured and Bonded (ISB) Panel Containing Repeated Inner Pyramidal Structure,' Journal of the Korea Society for Precision Engineering, Vol. 22, No.7, pp. 175-182,2005
  8. Ahn, D. G, Lee, S. H., Kim, M. S., Han, G Y, Jung, C. G and Yang, D. Y, 'Investigation into Characteristics of Bending Stiffness and Failure for ISB Panel,' Journal of the Korea Society for Precision Engineering, Vol. 22, No.9, pp. 162-172, 2005
  9. Seong, D. Y, Jung, C. c, Yoon, S. J., Yang, D. Y, Lee, S. H. and Ahn, D. G, 'Fabrication of Metallic Sandwich Plates with Inner Dimpled Shell Structuers and Static Bending Test,' Transactions of the Korean Society of Mechanical Engineers, Vol. 30, No.6, pp. 653-661,2006 https://doi.org/10.3795/KSME-A.2006.30.6.653
  10. Xue, Z. and Hutchinson, J. W, 'A Comparative Study of Impulse-resistant Metal Sandwich Plates,' International Journal of Impact Engineering, Vol. 30, Issue 10, pp. 1283-1306,2004 https://doi.org/10.1016/j.ijimpeng.2003.08.007
  11. Rathbun, H. J., Radford, D. D., Xue, Z., He, M. Y, Yang, J., Deshpande, V. S., Fleck, N. A., Hutchinson, J. W, Zok, F. W and Evans, A. G, 'Performance of Metallic Honeycomb-core Sandwich Beams under Shock Loading,' International Journal of Solids and Structures, Vol. 43, Issue 10, pp. 1746-1763,2006 https://doi.org/10.1016/j.ijsolstr.2005.06.079
  12. Radford, D. D., Fleck, N. A. and Deshpande, V. S., 'The Response of Clamped Sandwich Beams Subjected to Shock Loading,' International Journal ofImpact Engineering, Vol. 32, Issue 6, pp. 968-987, 2006 https://doi.org/10.1016/j.ijimpeng.2004.08.007
  13. McShane, G. J., Radford, D. D. and Deshpande, V. S., 'The Response of Clamped Sandwich Plates with Lattice Cores Subjected to Shock Loading,' European Journal of Mechanics A/Solids, Vol. 25, Issues 7-8, pp. 215-229, 2006 https://doi.org/10.1016/j.euromechsol.2005.08.001
  14. Jung, C. C., Seong, D. Y, Yang, D. Y., Kim, J. S. and Ahn, D. G, 'Low Velocity Impact Behavior of Metallic Sandwich Plate with a Truss Core,' Journal of the Korea Society for Precision Engineering, Vol. 23, No. 10, pp. 80-87, 2006