Buckling Analysis of Isotropic and Composite Laminated Plates: New Finite Element Formulation

Belkaid, K.

doi:10.1007/978-3-030-11827-3_8

Cited by 1 publication

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“…2) is employed for the bending analysis of sandwich plates based on Reddy's third order shear deformation. In the present formulation element the complexities associated with C1 continuous plate are overcome with efficient manner by choosing seven nodal degrees of freedom (DOF) [37,38] as follows: two displacements   , u v for the membrane behavior and five displacements ( , , , , )…”

Section: Finite Element Formulationmentioning

confidence: 99%

A Simple and Efficient eight node Finite Element for Multilayer Sandwich Composite Plates Bending Behavior Analysis

Belkaid

Boutasseta

Aouaichia

et al. 2022

Frattura Ed Integrità Strutturale

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In this paper, a C0 simple and efficient isoparametric eight-node displacement-model based on higher order shear deformation theory is proposed for the bending behavior study of multilayer composites sandwich plates. Difficult C1-continuity requirement is overcome by extracting the seven degrees of freedom from strain relations for each element node: two displacements for in-plane behavior and five bending unknowns namely: a transverse displacement, two rotations and two shear angles, which results in a kinematic approximation formulation having only first order derivative requirement. The governing equations of the element (constitutive, virtual work and equilibrium equations) are implemented for the prediction of approximate solutions of deflections and stresses of sandwich plates linear elastic problems. Thereby, the formulation element is able to present a cubic in-plane displacement along both core and faces sandwich thickness, as well as, the shear stresses are found to vary as quadratic field without requiring shear correction factors and independent from any transverse shear locking problems. The accuracy and validity of the proposed formulation is verified through the numerical evaluation of displacements and stresses and their comparison with the available analytical 3D elasticity solutions and other published finite element results.

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Section: Finite Element Formulationmentioning

confidence: 99%