the effect of axial deformation of shell particles on the dynamic instability (flutter) of cantilevered cylindrical shells made of functionally graded materials (fgm) under an end axial follower force is addressed. to this end, at first, results for free vibration of fgm cylindrical shells were verified with previous outcomes and they were in very good agreement. then, the effect of axial defor...

Cassini–Huygens observations have shown that Titan and Enceladus are geologically active icy satellites. Mitri and Showman [Mitri, G., Showman, A.P., 2005. Icarus 177, 447–460] and McKinnon [McKinnon, W.B., 2006. Icarus 183, 435–450] investigated the dynamics of an ice shell overlying a pure liquid-water ocean and showed that transitions from a conductive state to a convective state have major ...

The paper describes new approach of potentiostat for very low sensor current measurements. Recent potentiostats were used as measurement devices which were standalone and sensors were connected by a screened wire. These concepts are inconvenient for the presented very low current measurements. The new approach is based on the potentiostat circuitry integrated on a chip that should be directly c...

this study aims to investigate the effects of geometric imperfections on buckling of thin cylindrical shells due to global shear. to this end, more than 320 finite element models of cylindrical shells with different diameter to thickness ratios were prepared. random imperfections with different amplitudes were applied to numerical models. the results revealed that global buckling of cylindrical...

Abstract The application of a newly proposed generalised neo-Hookean strain energy function to the inflation incompressible rubber-like spherical and cylindrical shells is demonstrated in this paper. pressure ( $P$ P ) – $\lambda $ ? or $v$ v relationships are derived present...

We produce hollow sphere liquid crystal elastomer (LCE) actuators from a nematic precursor mixture, brought into the shape of self-closing shell with tangential anchoring director field n(r), using solvent-assisted microfluidic technique. By separating production polymerization and cross-linking, is allowed to approach its equilibrium n(r) configuration in shell, spontaneously forming topologic...

Most hermit crabs depend on empty gastropod shells for shelter; competition for appropriate shells is often severe. This study determined whether shells that have been drilled by naticid gastropods are suitable for occupancy by the hermit crab Pagurus longicarpus. Differences in the characteristics of empty shells and those occupied by hermit crabs were assessed at two adjacent field sites in N...

The present work deals with the semi-analytical assessment of three-dimensional stress fields in circular cylindrical symmetrically and unsymmetrically laminated cross-ply shells undergoing different transverse loads. Starting from a closed-form plane-strain analysis innermost regions shell, elasticity solution is upgraded by higher-order displacement-based approach which enables developed meth...