단일방향 및 크로스-플라이 섬유강화 복합체에서의 동적균열 전파모사

Simulation of Dynamic Crack Propagation in Uni-Directional and Cross-Ply Fiber-Reinforced Composites

  • 황찬규 (서울벤처정보대학원대학교 유비쿼터스시스템학과)
  • 발행 : 2008.08.30

초록

이 논문에서는 단일방향 및 크로스-플라이 섬유강화 복합재에서의 동적 균열 전파를 모사하기 위해 특별히 고안된 스펙트랄 방법의 정식화와 수치적 구현 방법에 대해 제시한다. 이 방법은 균열면에서 작용하는 힘과 변위 사이의 스펙트랄 관계식에 기초하고 있고, 재료는 횡등방성 고체로 가정된다. 본 논문에서 제안된 방법에 의해 섬유보강 복합재에서 전파하는 균열문제가 대해 검토 해석되며, 실험 및 문헌에 나와 있는 결과와 비교된다. 이 방법은 FRP 보강 철근 콘크리트 구조물에서의 균열해석문제에 직접 적용이 가능하다.

This paper presents the formulation and numerical implementation of a spectral scheme specially developed to simulate dynamic fracture events in unidirectional and cross-ply fiber-reinforced composites. The formulation is based on the spectral representation of the transversely isotropic elastodynamic relations between the traction stresses along the fracture plane and the resulting displacements. Example problem of dynamically propagating cracks in fiber-reinforced composites is investigated and compared with reference solutions available in the literature and/or experimental observations. This scheme can be directly applicable to the interfacial fracture analysis in the FRP reinforced concrete structures.

키워드

참고문헌

  1. Abrate, S. (1998) Impact of Composite Structures, Cambridge University Press, NY
  2. Breitenfeld, M.S., Geubelle, P.H. (1998) Numerical analysis of dynamic debonding under 2D in-plane and 3D loading. Int. J. Fracture, 93, pp.13-38 https://doi.org/10.1023/A:1007535703095
  3. Broberg, K.B. (1999) Intersonic crack propagation in an orthotropic material, Int. J. Fracture, 99, pp.1-11 https://doi.org/10.1023/A:1018324530191
  4. Coker, D., Rosakis, A.J. (1998) Experimental observations of intersonic crack growth in asymmetrically loaded unidirectional composites plates, GALCIT SM Report 98-16, Caltech. Philosophical Magazine A (2000)
  5. Geubelle, P.H., Baylor, J. (1998) Impact-induced delamination of composites: 2D simulation, Composites B, 29B, pp.589-602
  6. Geubelle, P.H., Breitenfeld, M.S. (1997) Numerical analysis of dynamic debonding under anti-plane shear loading, Int. J. Fracture, 85, pp.265-282 https://doi.org/10.1023/A:1007498300031
  7. Geubelle, P.H., Kubair, D. (2001) Intersonic crack propagation in homogeneous media: Numerical analysis, J. Mech. Physics Solids. 49(3), pp.571-587 https://doi.org/10.1016/S0022-5096(00)00041-7
  8. Geubelle, P.H., Rice, J.R. (1995) A spectral method for 3D elastodynamic fracture problems, J. Mech. Phys. Solids, 43(11), pp.1791-1824 https://doi.org/10.1016/0022-5096(95)00043-I
  9. Huang, Y., Wang, W., Liu, C., Rosakis, A.J. (1999) Analysis of intersonic crack growth in unidirectional fiber-reinforced composites, J. Mech. Physics Solids, 47, pp.1893-1916 https://doi.org/10.1016/S0022-5096(98)00124-0
  10. Lambros, J.M., Rosakis, A.J. (1997) An experimental study of the dynamic delamination of thick reinforced polymeric matrix composite laminates, Experimental Mechanics, 37(3), pp.360-366 https://doi.org/10.1007/BF02317432
  11. Rosakis, A.J., Samudrala, O., Coker, D. (1999) Cracks faster than the shear wave speed, Science, 284, pp.1337-1340 https://doi.org/10.1126/science.284.5418.1337