Linear and Nonlinear Dynamic Analyses of Sandwich Panels with Face Sheet-to-Core Debonding

Table 1

Summary of techniques on finite element modelling of sandwich panels [11, 12].

No.	Modelling schemes	Comments
(1)	Homogenous shell elements based on either CPT^1 or FSDT^2	Simple efficient for general analysis. Transverse compressibility is neglected.
(2)	Layered shell elements with shear deformation	Computationally efficient. Transverse compressibility is ignored.
(3)	Plane stress/plane strain elements modelling sandwich cross-section	Applicable to 2D and axisymmetric problems only.
(4)	Plane stress/plane strain elements for the core and beam elements for skins	Skin is idealized by Euler-Bernoulli beam element.
(5)	Solid-brick elements for the core and conventional shell elements for skins	Compressibility of the core is accounted for. Conventional shell elements may suffer from shear-locking.
(6)	3D model with solid-brick elements for both the core and the skins	Computationally very expensive model.
(7)	3D model with layered solid cross-section	No restrictions on the core and skins kinematics.
(8)	Layer-wise models combining 3D solid and continuum shell elements	Core compressibility can be accounted for.

¹Classical plate theory. ²First-order shear deformation theory.