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|Title:||A strip element method for analyzing wave scattering by a crack in an immersed composite laminate|
|Authors:||Liu, G.R. |
|Citation:||Liu, G.R.,Xi, Z.C.,Lam, K.Y.,Shang, H.M. (1999). A strip element method for analyzing wave scattering by a crack in an immersed composite laminate. Journal of Applied Mechanics, Transactions ASME 66 (4) : 898-903. ScholarBank@NUS Repository.|
|Abstract:||A strip element method is presented for analyzing wave scattering by a crack in a composite laminate submerged in a fluid. In this method, the fluid and laminated plate are modeled using hvo-nodal-line and three-nodal-line strip elements, respectively. A system of governing equations of the fluid and solid strip elements in frequency domain are derived using a variational method and the Hamilton principle, which are converted as a set of characteristic equations in wave number domain by applying Fourier transform techniques. A particular solution to the equations is obtained using a modal analysis method in conjunction with inverse Fourier transform techniques. A complementary . solution to the equations is found employing horizontal boundary conditions on cross sections at the crack tips. The addition of the particular and complementary solutions yields a general solution. Numerical examples are presented for immersed steel and composite plates with either a horizontal or a vertical crack. Computed results indicate that the fluid has considerable influence on the wave fields scattered by a crack in a composite laminate. Copyright © 1999 by ASME.|
|Source Title:||Journal of Applied Mechanics, Transactions ASME|
|Appears in Collections:||Staff Publications|
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