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|Title:||Static response of unsymmetric sandwich beams using an improved zig-zag model|
|Authors:||Lee, K.H. |
|Source:||Lee, K.H.,Xavier, P.B.,Chew, C.H. (1993). Static response of unsymmetric sandwich beams using an improved zig-zag model. Composites Engineering 3 (3) : 235-248. ScholarBank@NUS Repository.|
|Abstract:||A simple layerwise higher-order zig-zag model is employed for the static analysis of thick-cored unsymmetric sandwich beams. The model accounts for a cubic variation of the axial displacements in each layer, and a parabolic variation of the transverse shear stress across the composite beam with zero values at the free surfaces. By imposing continuity of the axial displacements and the transverse shear stress at the interfaces, the number of variables is shown to be the same as that given by Timoshenko's beam theory, independent of the number of layers in the beam. Numerical results of the present theory, when compared with previous theories for simply supported and fixed-fixed beams under uniformly distributed loads, show that while larger bending stresses are predicted for a wide range of values of the shear parameter and core-to-face modulus ratios, the predicted lateral deflection is smaller at low values of the same parameters. © 1992.|
|Source Title:||Composites Engineering|
|Appears in Collections:||Staff Publications|
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