흑연/에폭시 복합재의 동적 특성
Dynamic characteristics of graphite/epoxy laminate composites
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초록
In this paper, the response of graphite/epoxy laminated composite beams subjected to impact loadswithout damage, is studied by the use of the developed finite element program. The modified Hertziancontact law considered elasto-plastic process is used to calculate the dynamic responses between theimpactor and laminated target. Numerical results are presented to demonstrate the effects on the historiesof contact force, deflection, damage energy, strain and stress through the thickness due to stackingsequence. In view of the kinetic energy response, [0/30/0/-30]2S laminate is faster than that of other twolaminates due to its flexural stiffness. In special, the distribution of stress through the thickness showsnearly linear despite its discontinuity of stacking sequences for dynamic analysis unlike static analysis ina laminated composites.
Abstract
In this paper, the response of graphite/epoxy laminated composite beams subjected to impact loadswithout damage, is studied by the use of the developed finite element program. The modified Hertziancontact law considered elasto-plastic process is used to calculate the dynamic responses between theimpactor and laminated target. Numerical results are presented to demonstrate the effects on the historiesof contact force, deflection, damage energy, strain and stress through the thickness due to stackingsequence. In view of the kinetic energy response, [0/30/0/-30]2S laminate is faster than that of other twolaminates due to its flexural stiffness. In special, the distribution of stress through the thickness showsnearly linear despite its discontinuity of stacking sequences for dynamic analysis unlike static analysis ina laminated composites.
참고문헌 (9)
- W. Goldsmith, "Impact" (1960), Edward Arnold Ltd
- C. T. Sun, "Transverse impact problems by higher order beam finite element", Computers & Structures, 5, pp.297~303 (1975)
- T. M. Tan, "Use of Statical indentation laws in the impact analysis of laminated composite plates", Journal of Applied Mechanics, Trans. AS ME, 52, pp.6~12 (1985)
- A. A. Khdeir, "Dynamic response of antisymmetric cross-ply laminated composite beams with arbitrary boundary conditi ons", Int. J. Engng. Sci., 52(1), pp.9~19 (1986)
- I. H. Choi, "Low-velocity impact analysis of composite laminates under linearized contact law", Composite Structures, 66, pp.125~132 (2004)
- I. H. Choi, "Low-velocity impact analysis of composite laminates under initial in-plane load", Composite Structures, 86, pp.251~257 (2008)
- 김봉환, "Finite element simulations of ballistic impact on monolithic glass", 한국기계기술학회지, 16(3), pp.1477~1482 (2014), 한국기계기술학회
- 김봉환, "Impact energy prediction in monolithic glass under impact loading", 한국기계기술학회지, 16(3), pp.1503~1508 (2014), 한국기계기술학회
- J. Wei, "Stress characteristics of a laminated architectural glazing subjected to blast loading", Computer & Structures, 84, pp.699~707 (2006)