Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis of Low Velocity Impact on Biomimetic Composites Mimicking Nacre

진주조개를 모방한 생체모방 복합재료의 저속충격 해석

  • 조승운 (인하대학교 대학원 기계공학과) ;
  • 범현규 (인하대학교 기계공학과)
  • Published : 2010.08.31
Download PDF
⟨ Previous Next ⟩

Abstract

The dynamicresponse of biomimetic composites mimicking nacre under low velocity impact is investigated. The composites have hierarchical structures with a staggered pattern consisting of a protein and a mineral. To analyze the impact response of the composites, the finite element method is used. The effects of the hierarchical structures of the compositeson the dynamic response are examined. It is shown that the maximum stress, displacement and contact force in the composite subjected to low velocity impact decrease as the level of structural hierarchy increases.

진주조개를 모방한 생체모방 복합재료의 저속충격 하에서의 동적 거동에 대해 연구하였다. 이러한 복합재료는 단백질과 미네랄 층이 계층구조를 이루고 있다. 유한요소해석을 사용하여 복합재료의 충격거동을 해석하였다. 복합재료의 계층구조가 동적 거동에 미치는 영향을 고찰하였다. 생체모방구조물은 계층구조의 차수가 높아짐에 따라 저속충격에 대해 충격지점에서 구조물이 받는 최대 응력과 변위, 접촉하중을 감소시킨다.

Keywords

References

  1. S. Kamat, X. Su, R. Ballarini and A. H. Heuer, "Structural Basis for the Fracture Toughness of the Shell of the Conch Strombus Gigas," Nature, Vol. 405, 2000, pp.1036–1040. https://doi.org/10.1038/35016535
  2. T. L. Norman, D. Vashishth and D. B. Burr, "Fracture Toughness of Human Bone under Tension," Journal of Biomechanics, Vol. 28, 1995, pp. 309–320. https://doi.org/10.1016/0021-9290(94)00069-G
  3. B. Ji and H. Gao, "Mechanical Properties of Nanostructure of Biological Materials," Journal of the Mechanics and Physics of Solids, Vol. 52, 2004, pp. 1963-1990. https://doi.org/10.1016/j.jmps.2004.03.006
  4. H. Gao, "Application of Fracture Mechanics Concepts to Hierarchical Biomechanics of Bone and Bone-like Materials," International Journal of Fracture, Vol. 138, 2006, pp. 101-137. https://doi.org/10.1007/s10704-006-7156-4
  5. N. C. Broedling, A. Hartmaier, M. J. Buehler and H. Gao, "The Strength Limit in a Bio-inspired Metallic Nanocomposite," Journal of the Mechanics and Physics of Solids, Vol. 56, 2008, pp. 1086-1104. https://doi.org/10.1016/j.jmps.2007.06.006
  6. J. D. Currey, "Bones: Structure and Mechanics," New Jersey: Princeton University Press, 2002.
  7. J. H. Lee, C. D. Kong and Soutis Cotstas, "Modeling of Low Velocity Impact Damage in Laminated Composites," Journal of Mechanical Science and Technology, Vol. 19, No. 4, 2005, pp. 947-957. https://doi.org/10.1007/BF02919177
  8. ANSYS/ LS-DYNA User's Guide.
  9. K. Bertoldi, D. Bigoni and W. J. Drugan, "Nacre: An Orthotropic and Bimodular Elastic Material," Composite Science and Technology, Vol. 68, 2008, pp. 1363-1375. https://doi.org/10.1016/j.compscitech.2007.11.016
  10. J. K. Chen and C. T. Sun, "Dynamic Large Deflection Responseof Composite Laminates Subjected to Impact," Composite Structures, Vol. 4, 1985, pp. 59-73. https://doi.org/10.1016/0263-8223(85)90020-0
  11. 최익현, "초기 면내하중을 받는 복합적층판의 저속충격 거동 및 손상해석," 한국복합재료학회지, 제22권 제1호, 2009, pp. 1-7.
  12. S. H. Yang and C. T. Sun, "Indentation Law for Composite Laminates," ASTM STP 787, 1981, pp. 425-449.