Predicting the buckling load of anisotropic sandwich panels: an approach including shear deformation of the faces

Buckling and wrinkling of anisotropic sandwich plates

“…For instance Rao (1985) implemented a Ritz-based approach by adopting a Libove-Batdorf sandwich model in conjunction with plane stress constitutive law, while Kim and Hong (1988) considered the sandwich plate as the assembly of an anti-plane core, and two laminated faces connected by means of adhesive layers of finite bonding stiffness. The Ritz method is used also in the work of Hadi and Matthews (1998) in conjunction with a three-layers model in which facesheets and core are modeled according to the first-order shear deformation theory (FSDT). Fazzolari and Carrera (2013) studied the buckling of sandwich plates in the framework of a variable-kinematics approach.…”

Study on shear postbuckling failure of composite sandwich plates by a quasi-conforming finite element method

“…The linear zig-zag theory (Z-ZT) is more efficient and relatively simpler approach. Based on the linear Z-ZT, Hadi et al [8] studied the buckling of sandwich plates analytically. Chen et al [9] simulated the postbuckling behavior of face/core debonded composite sandwich plate.…”

“…12 =0.315 ν ; and core: The buckling loads are listed in Table 2 and compared with Hadi's analytical solution [8] and Bai's EF solution [20]. The comparisons show that the accuracy of the element is good and can be equivalent to that of Bai's element based on a more complex Zig-Zag mode, including the transverse shear of FSs and 11 DOF per note.…”

Buckling optimisation of sandwich cylindrical panels

“…Linear buckling of sandwich and laminated plates was studied in 1998 using a multilayer model [4]. Zig-zag model was considered for the thick faces and the RayleighRitz method was used for calculating the buckling loads.…”