Buckling Analysis of a Composite Honeycomb Reinforced Sandwich Embedded with Viscoelastic Damping Material

In this study, the buckling loads of a composite sandwich structure, which is reinforced by a honeycomb layer and filled with viscoelastic damping material, are analyzed. By applying von Karman anisotropic plate equations for large deflection, the governing equation of the composite sandwich structure is determined, and the deflection of the structure is further defined by a double triangular series. According to the dynamic equivalent effective stiffness obtained by the homogenous asymptotic method and Hill's generalized self-consistent model based on the Halpin-Tsai model, limiting the dynamic load buckling of the composite honeycomb reinforced sandwich structure embedded with viscoelastic damping material under axial compression can be achieved. The factors that influence the composite sandwich's buckling loads are discussed and compared, such as the load and geometry parameters, the thickness of the honeycomb reinforcement layer and the honeycomb's width. Finally, the results obtained by the present method are validated by the existing literature.

Automated summary

This study analyzes the buckling loads of a composite sandwich structure filled with viscoelastic damping material under axial compression. By applying the von Karman anisotropic plate equations and a double triangular series, the governing equation and deflection of the structure are determined. The study discusses factors that influence the buckling loads and validates the results with existing literature.