DOI QR코드

DOI QR Code

Modified Octet Truss Cellular Metals Fabricated by Expanding Metal Process (I) - Compression and Shear Properties -

확장금속망 공정으로 제작된 옥테트 트러스 다공질 금속 (I) - 압축 및 전단 특성 -

  • 주재황 (전남대학교 자동차연구소) ;
  • 이동석 (전남대학교 기계시스템공학부) ;
  • 전인수 (전남대학교 기계시스템공학부) ;
  • 강기주 (전남대학교 기계시스템공학부)
  • Published : 2007.11.01

Abstract

This paper presents a new way for fabricating sandwich plates with tetrahedral truss cores. The tetrahedral truss cores are manufactured through metal expanding and bending process and then brazed with solid face sheets. The properties of sandwich plates with the tetrahedral truss cores composed of a wrought steel SS41 under compression and shear loading have been investigated. Good agreement is observed between the measured and predicted peak strengths. Comparisons with normalized compressive strength for other cellular metals have indicated that the tetrahedral truss structures outperform aluminum open cell forms and woven core sandwich plates.

Keywords

PCM(Periodic Cellular Metal);Sandwich Plates;Tetrahedral Truss;Expanding Metal Process

References

  1. Zok, F. W., Waltner, S. A., Wei, Z., Rathbun, H. J., McMeeking, R. M. and Evans, A. G., 2004, 'A Protocol for Characterizing the Structural Performance of Metallic Sandwich Panels: Application to Pyramidal Truss Cores,' International J. of Solids and Structures, Vol. 41, pp. 6249-6271 https://doi.org/10.1016/j.ijsolstr.2004.05.045
  2. Deshpande, V. S., Fleck, N. A. and Ashby, M. F., 2001, 'Effective Properties of the Octet-Truss Lattice Material,' J. of the Mechanics and Physics of Solids, Vol. 49, pp. 1747-1769 https://doi.org/10.1016/S0022-5096(01)00010-2
  3. Chiras, S., Mumm, D. R., Wicks, N., Evans, A. G., Hutchinson, J. W., Dharamasena, K. Wadley, H. N. G. and Fichter, S., 2002, 'The Structural Performance of Near-Optimized Truss Core Panels,' International Journal of Solids and Structures, Vol. 39, pp. 4093-4115 https://doi.org/10.1016/S0020-7683(02)00241-X
  4. Wadley, H. N. G., 2006, 'Multifunctional Periodic Cellular Metals,' Philosophical Transactions of the Royal Society A, Vol. 364, pp.31-68 https://doi.org/10.1098/rsta.2005.1697
  5. Sypeck, D. J. and Wadley, H. N. G., 2001, 'Multifunctional Microtruss Laminates: Textile Synthesis and Properties,' J. Mater. Res. Vol. 16, pp. 890-897 https://doi.org/10.1557/JMR.2001.0117
  6. Kang, K. J., Jeon, G. P., Nah, S. J., Ju, B. S. and Hong, N. H., 2004, 'A New Way to Manufacture Ultra Light Metal Structures,' Trans. of the KSME (A), Vol. 28, No. 3, pp. 296-303
  7. Lee, B. K., Choi, J. E., Kang, K. J. and Jeon, I., 2007, 'Analysis of Failure Mechanism for Wire-woven Bulk Kagome,' Proceedings of the KSME Spring Meeting, pp. 2295-2300
  8. Kooistra, G. W. and Wadley, H. N. G., 2007, 'Lattice Truss Structures from Expanded Metal Sheet,' Materials and Design, Vol. 28, pp. 507-514 https://doi.org/10.1016/j.matdes.2005.08.013
  9. Jung, C. G., Yoon, S. J., Yang, D. Y., Lee, S. M., La, S. J., Lee, S. H. and Ahn, D. G., 2005, 'Fabrication and Static Bending Test in Ultra Light Inner Structured and Bonded(ISB) Panel Containing Repeated Inner Pyramidal Structure,' Journal of the Korean Society of Precision Engineering, Vol. 22, No. 6, pp. 175-182
  10. Lim, C. H., Lim, J. H., Jung, J. G., Lim, J. D. and Kang, K. J., 2006, 'Mechanical Behavior of Sandwich Panels with Quasi-Kagome Truss Core Fabricated from Expanded Metals,' Trans. of the KSME (A), Vol. 30, No. 9, pp. 1078-1085 https://doi.org/10.3795/KSME-A.2006.30.9.1078
  11. Kang, K. J., Lee, D. S., Lee, B. C. and Lee, C. J., 2006, 'Light Weight Sandwich Panels Manufactured by Using Expanded Metal Process and Bending Process and Manufacturing Method Thereof,' Application Number (Patent) 10-2006-0136648
  12. Zupan, M., Deshpande, V. S. and Fleck, N. A., 2004, 'The Out-of-Plane Compressive Behavior of Woven-core Sandwich Plates,' European Journal of Mechanics A/Solids, Vol. 23, pp. 411-421 https://doi.org/10.1016/j.euromechsol.2004.01.007
  13. Wadley, H. N. G., Fleck, N. A. and Evans, A. G., 2003, 'Fabrication and Structural Performance of Periodic Cellular Metal Sandwich Structures,' Composite Science and Technology, Vol. 63, pp. 2331-2343 https://doi.org/10.1016/S0266-3538(03)00266-5
  14. Hyun, S., Karlsson, A. M., Torquato, S. and Evans, A. G., 2003, 'Simulated Properties of Kagome and Tetragonal Truss Core Panel,' Int. J. Solids and Structures, Vol. 40, pp. 6989-6998 https://doi.org/10.1016/S0020-7683(03)00350-0
  15. Lim, J. H., Nah, S. J., Koo, M. H. and Kang, K. J., 2005, 'Compressive and Bending Behavior of Sandwich Panels with Octet Truss Core Fabricated from Wires,' Trans. of the KSME (A), Vol. 29, No. 3, pp. 470-476 https://doi.org/10.3795/KSME-A.2005.29.3.470
  16. Lim, C. H., Lim, J. H., Jung, J. G., Lim, J. D. and Kang, K. J., 2006, 'The structural performance of pseudo Kagome truss core sandwich panels,' ASME International Mechanical Engineering Congress and Exposition, Chicago, USA, No. IMECE2006-15549
  17. American Society for Testing and Materials Designation C273/C 273M, 'Standard Test Method for Shear Properties of Sandwich Core Materials,' Copyright ASTM International, West Conshohocken, PA 19428-2959, United States