A generalized global-local high-order theory for bending and vibration analyses of sandwich plates subjected to thermo-mechanical loads

Non-linear dynamic thermo-mechanical buckling analysis of the imperfect sandwich plates based on a generalized three-dimensional high-order global–local plate theory

https://hal.archives-ouvertes.fr/hal-00619304/document

Measurement of relevant elastic and damping material properties in sandwich thick-plates

A piecewise shear deformation theory for free vibration of composite and sandwich panels

Honeycomb structures are widely used in transportation industries. Owing to their lightweight, high strength, damage tolerance and thermal resistance, they are extensively used as a solution to modern engineering problems in the vehicle structure’s design. Furthermore, lightweight polymeric foams can be exploited to improve mechanical properties of sandwich panels. Recently, foam filled honeycomb sandwich panels have been proposed in order to benefit from mechanical characteristics of both honeycomb cellular structure and polymeric foam in the core of the sandwich panel. Until now, most of the investigations were delved into the mechanical properties of the foam filled honeycomb sandwich panels; in plane crushing, out of plane impact and local indentation response of these panels were broadly discussed previously. On the other hand, since many vehicles’ failure are related to severe vibrations, clear understanding of foam filled honeycomb panels eigenvibration properties is vital. In this paper, v...

Vibration analysis of foam filled honeycomb sandwich panel – numerical study

Natural frequency analysis of a sandwich panel with soft core based on a refined shear deformation model

As honeycomb core materials have much lower transverse shear modulus than facesheet and are much thicker than the facesheets, the transverse shear deformation plays a significant role on the vibration of sandwich panels. In this paper, the vibration of a sandwich panel with two identical isotropic facesheets and a core of hexagonal cells are studied by applying a variational principle. A simplified model is used to describe the properties of hexagonal honeycomb core. Both low order and high order shear deformation models are employed for shear deformation of the facesheets and core. An analytical solution in Navier form for natural frequency of simply supported rectangular sandwich panel was obtained and the rotational effect was taken into account.

Qunli Liu

Papers

Natural frequency analysis of a sandwich panel with soft core based on a refined shear deformation model

Effect of Soft Honeycomb Core on Flexural Vibration of Sandwich Panel