COMPRESSIVE BUCKLING BEHAVIOR OF LAMINATES WITH INTERLEAVES OF VERY-LOW ELASTIC-MODULUS

The damping capability of fiber reinforced composite laminates can be remarkably improved by interleaving damping material sheets. However, the compressive buckling property reduces significantly due to the exi stence of interleaves of very low elastic modulus. The buckling loads of the composite plates with interleaves are explicitly given by assum ing that only the interleaves deform due to transverse shear. The resu lts are compared with finite element results and are found to agree we ll with those from a finite element analysis in spite of its simplicit y. The buckling load reduction can be estimated through a nondimension al shear rigidity parameter of the interleaves.