Isogeometric analysis, as a special field of the finite element method (FEM) which integrates geometric and finite element mesh modelling, is one of the promising directions of FEM development. The paper presents a concept of isogeometric FEM analysis of thin-walled structures based on the Kirchhoff-Love shell formulation and NURBS as basis functions. The basic properties of isogeometric shell ...

In this paper, simulation and analysis of thin steel cylindrical shells with elliptical cutouts under oblique loading were studied using finite element method. First, the numerical results were validated by the results of experimental test performed by an INSTRON 8802 servo hydraulic machine. Also, the effect of cutout angle (θ), cutout size, cutout position (L0/L) and cutout aspect ratios (b/a...

Relevance. The use of shells as thin-walled structures for various industries is very diverse. Spherical are widely used in the aircraft industry, circular cylindrical oil and gas more than 30 analytical forms have been construction industry. All elements shell undoubtedly subject to strength calculations. Also, a separate role study occupied by experimental part, which confirms or refutes calc...

In this paper, a comparison is conducted between two different formulations of the van der Waals interaction coefficient layers, as applied to vibrations double-walled carbon nanotubes (DWCNTs); specifically, evaluation natural frequencies achieved through Ru’s and He’s formulations. The actual discrete DWCNT modelled by means couple concentric equivalent continuous thin cylindrical shells, whe...

Treated herein is the elastic buckling problem of Single-Walled Carbon Nanotubes (SCNTs) under axial compression. Critical buckling strains cr ε of stocky SCNTs (length/diameter less than 8) that have been obtained by modeling them as first-order shear deformation (thick) shell theory (FSDST). The buckling strains are compared with those obtained by commonly used thin shell theories, such as th...

Abstract This paper uncovers new manifestations of the homoclinic snaking mechanism in post-buckling regime a pressurized thin cylindrical shell under axial load. These forms tend to propagate either wholly or partially direction that is orthogonal applied load and so, unlike earlier Woods & Champneys (1999, Heteroclinic tangles unfolding degenerate Hamiltonian Hopf bifurcation. Phys. D, 12...