The buckling and postbuckling behaviors of a composite beam with single delamination are investigated. A three-dimensional finite element model using the commercial code ANSYS is employed for this purpose. The finite elements analyses have been performed using a linear buckling model based on the solution of the eigenvalues problem, and a non-linear one based on an incremental-iterative method....

FIG. 1.—Alternative explanations of strata exhibiting progradational followed by retrogradational stacking. In Interpretation 1, the switch in stacking patterns is interpreted as a combined type I sequence boundary (SB(I)) and transgressive surface (TS), underlain by the highstand systems tract (HST) and overlain by the transgressive systems tract (TST). In Interpretation II, the switch in stac...

The stacking interaction of nucleic acid bases is studied by molecular dynamic simulation in the ApA, ApC, CpA and CpC ribodinucleoside monophosphates. The rate of stacking was analyzed during the molecular dynamic simulation using three geometry parameters – the distance between the nitrogen atoms of nucleic acid bases linked to sugar with the glysosidic bond and by two angles that depend on m...