Biaxial Buckling Analysis of Soft-Core Functionally Graded Graphene-Reinforced Sandwich Plates
Publication: Journal of Aerospace Engineering
Volume 37, Issue 5
Abstract
Graphene platelets (GPLs) exhibit outstanding mechanical and physical properties and therefore are employed as a reinforcement in advanced polymer composite structures. The purpose of this paper is to analyze the biaxial buckling of functionally graded graphene-reinforced sandwich plates with a soft orthotropic core. A new high-order three-layer theory is developed for the accurate modeling and analysis of the sandwich structure. The sandwich plate is divided into three layers including two face sheets and a core and a different third-order kinematic assumption is dedicated to each layer. The transverse flexibility of each layer as well as the displacements continuity at the interfaces are considered. Additionally, the continuity conditions and the conditions of zero transverse stresses in the whole structure are satisfied. The plate is subjected to a biaxial compressive loading and the governing equations are derived using the principle of minimum potential energy. Analytical solutions are presented for simply supported boundary conditions to obtain the critical buckling load. The influences of plate geometry and GPL properties on buckling load are investigated. The results obtained in specific cases are compared with the published results and the validity of the present results is confirmed. It can be drawn that the use of GPL increases the buckling load of graphene-reinforced sandwich plates.
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Data Availability Statement
No data, models, or code were generated or used during the study.
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Information & Authors
Information
Published In
Journal of Aerospace Engineering
Volume 37 • Issue 5 • September 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Nov 22, 2023
Accepted: Apr 17, 2024
Published online: Jul 12, 2024
Published in print: Sep 1, 2024
Discussion open until: Dec 12, 2024
ASCE Technical Topics:
- Biaxial strength
- Buckling
- Composite structures
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Material mechanics
- Material properties
- Materials engineering
- Model accuracy
- Models (by type)
- Panels (structural)
- Plates
- Sandwich panels
- Solid mechanics
- Strength of materials
- Structural analysis
- Structural dynamics
- Structural engineering
- Structural members
- Structural systems
- Structures (by type)
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