Natural vibrations of orthotropic,ribbed, cylindrical shells

Institute of Mechanics, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Prikladnaya Mekhanika, Vol. 27, No. 10, pp. 83–90, October, 1991.     

Stability and vibrations of nonclosed circular cylindrical shells reinforced with discrete longitudinal ribs

The paper gives exact solutions to the stability and vibration problems for nonclosed circular cylindrical shells hinged along the longitudinal edges and reinforced with a regularly arranged discrete longitudinal ribs. These problems are also solved approximately in the cases of regularly and quasiregularly arranged ribs __________ Translated from Prikladnaya Mekhanika, Vol. 44, No. 1, pp. 20–27, January 2008.     

Algorithms for Image Processing in a Nanofor SPS DNA Sequencer

Technical Physics - The success of genomic sequencing is impossible without the development of information technologies and mathematical methods for data processing to establish various...     

Dispersion Curves for Harmonic Waves in Longitudinally Reinforced Cylindrical Shells

The paper studies the effect of the discrete arrangement of ribs and their number on the number of dispersion curves for harmonic waves that have a deflection node on a rib's axis and propagate along a cylindrical shell. It is found out that these curves split and the distance between the split curves depends strongly on the torsional stiffness of the ribs     

Effect of the stiffness of ribs on the vibrations and stability of open cylindrical shells

The effect of the stiffness of ribs on the minimum natural frequencies and critical stresses of axially compressed open cylindrical shells reinforced with a quasiregular set of longitudinal ribs is analyzed by way of numerical examples. It is shown that the earlier discovered phenomenon of abrupt decrease in the minimum frequencies is independent of rib stiffness for certain modes and a small number of ribs     

General solution of the equilibrium equations for open circular cylindrical shells reinforced with discrete longitudinal ribs

The exact solution for the inhomogeneous system of equilibrium equations for open circular cylindrical shells reinforced with a quasi-regular system of discrete ribs is obtained. The dependence of stress–strain state of semi-infinite shells on the distance from the loaded edge is analyzed.