복합적층판의 저속충격 거동에 대한 비선형 해석 Nonlinear Analysis of Composite Laminates Subjected to Low-Velocity Impact

The nonlinear dynamic behavior of graphite/epoxy laminated composite subjected to low velocity impact is investigated suing a finite element method. The dynamic von-Karman plate equations considering large deflection of a plate are modified to include the effect of transverse shear deformations as in the Mindlin plate theory and also the rotary inertia effect is considered. In the finite element analysis, the Newmark``s constant acceleration time integration algorithm is used. For an efficient and accurate iteration, Akay``s skim is used. An experimentally established contact law through the statical indentation test is incorporated into the present finite element program. The impact responds such as contact force, central deflection and dynamic strain history from the nonlinear analysis are compared with those from the linear analysis. The effects of impact velocity and mass of the impactor on the responds of laminate are discussed.
Publisher
대한기계학회
Issue Date
1991-05
Language
KOR
Citation

대한기계학회논문집 A, v.15, no.3, pp.757 - 770

ISSN
1226-4873
URI
http://hdl.handle.net/10203/15664
Appears in Collection
AE-Journal Papers(저널논문)
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