An improved higher order zigzag theory for the static analysis of laminated sandwich plate with soft core

Authors:
Mihir K. Pandit;Abdul H. Sheikh;Bhrigu N. Singh
Affiliations:
Department of Ocean Engineering and Naval Architecture, Indian Institute of Technology, Kharagpur 721302, India;School of Civil, Environmental and Mining Engineering, The University of Adelaide, SA 5005, Australia;Department of Aerospace Engineering, Indian Institute of Technology, Kharagpur 721302, India
Venue:
Finite Elements in Analysis and Design
Year:
2008

Citing 1
Cited 4

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An improved C0 FE model for the analysis of laminated sandwich plate with soft core

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An efficient C0 finite element modeling of an inverse hyperbolic shear deformation theory for the flexural and stability analysis of laminated composite and sandwich plates

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Abstract

An improved higher order zigzag theory is proposed for the static analysis of laminated sandwich plate with soft compressible core. The variation of in-plane displacements is assumed to be cubic for both the face sheets and the core and transverse displacement is assumed to vary quadratically within the core while it remains constant through the faces. The core is considered to behave as a three-dimensional elastic medium to incorporate the effect of transverse normal deformation. A computationally efficient C^0 finite element is also proposed for this model. Numerical examples of laminated composite and sandwich plate are provided for different thickness ratios and aspect ratio to illustrate the accuracy of the present formulation by comparing the present results with the three-dimensional elasticity solutions. Some new results are also presented. The performance of the present model is excellent in calculating displacements and stresses for a wide range of sandwich plate problems with transversely flexible core.