Overall and local buckling of sandwich plates with laminated faceplates, part II: Applications

On the application of the Ritz method to free vibration and buckling analysis of highly anisotropic plates

“…Similar findings were observed in Ref. [25], where sandwich plates with composite faceplates were analyzed using a refined B-spline finite strip approach. In those configurations where elastic coupling effects are stronger, buckling loads computed by the finite strip method are markedly smaller (with differences of the order of 25%) in comparison with the over-stiff results derived in Ref.…”

“…A classical example where the completeness requirement is not fulfilled is encountered in the analysis of anisotropic simply-supported plates by means of the Navier-type expansion of Eq. (25). Whilst this set of functions satisfies the essential boundary conditions, the completeness is guaranteed in the L 2 norm, but not in the strain energy one.…”

Assessment of the Refined Zigzag Theory for bending, vibration, and buckling of sandwich plates: a comparative study of different theories

“…Also in this case, the FSDT solution obtained with the classical values of the shear correction factors, overestimates the solution available in literature [52] and the others reported for comparison. When the shear correction factors are computed by means of the procedure suggested in [55], FSDT improves and its results approach the reference solutions, even if the solution remains conservative for every value of the aspect ratio considered.…”

“…the values of M and P. The critical buckling stress, for different values of the aspect ratio a/b, is estimated by means of the above mentioned models and compared with several other solutions available in literature. In particular, two references are considered: a 2D finite element solution, by Khatua and Cheung [51], and one obtained with the Finite Strip Method (FSM), by Yuan and Dawe [52], wherein the core is represented as a three-dimensional solid with quadratic through-the-thickness in-plane displacements and a linear transverse displacement, whereas the face-sheets are modeled as thin plates, i.e. according to the assumptions of the CLT.…”

Linearized global and local buckling analysis of sandwich struts with a refined quasi-3D model

“…Experimental, analytical and numerical results for these configurations have been reported by a number of authors. Predicted wrinkling loads per unit width obtained by the present LM4 model are compared in Table 5 with the experimental results of Pearce and Webber (P-W Expt ) [63], the analytical results of the same authors (P-W Anlt ), the numerical results by Hadi and Matthews (H-M) [42], those by Dafedar et al (D-D-M) [46], and those by Yuan and Dawe (Y-D) [64]. All predicted wrinkling loads are in close agreement but underestimate the experimentally measured critical load.…”