... conditions. On the other hand, the effects of both the boundary condition and span may be prominent if a blunt indentor and a relatively soft foundation are employed. cylindrical indentation iteration algorithm interlaminar stresses non-Hertzian behavior References Poe , C. C. , Jr...

... from 1 to 6 in. (2.54 to 15.2 cm) in diameter, subjected to in-plane compression were analyzed. Guidelines for full 3-D finite element analysis and 2- to 3-D global/local analysis of interlaminar stresses at straight free edges of laminated composites are included. The larger holes were found to reduce...

... /0 n ] s , and [[0/±15] s ] n . “Effective ply thickness” was varied by stacking several plies of the same angular orientation together. It was found that an increase in effective ply thickness caused a decrease in fracture stress resulting from delamination in all cases. Interlaminar stress...

... with time, far beyond the level predicted by the static solution. KEYWORDS: viscoelasticity, thermoelasticity, hygrothermal effects, interlaminar stresses, stress relaxation, bonded systems, finite-element method The mechanical behavior of the bonded fiber-reinforced plastic (FRP)/aluminum system...

... and 90/0 interfaces, and around the hole at these interfaces. The interlaminar normal stress σ z and the shear stress σ zϑ distributions had very steep gradients near the hole boundary, which suggested interlaminar stress singularities. The largest compressive σ z stress occurred at about 60° from...