Continuum and discrete models of lattice composite cylindrical shells | Mekhanika | kompozitsionnykh | materialov i konstruktsii
> Volume 18 > №1 / 2012 / Pages: 121-130

Continuum and discrete models of lattice composite cylindrical shells

Abstract:

The paper is concerned with lattice composite cylindrical shells composed of a system of ribs which have found wide application as rocket and space structural elements. Two possible models to simulate the structure are considered – first, the continuum model within the framework of which the ribs are smeared over the surface and a lattice shell is simulated with a homogenous orthotropic shell, and second – the discrete model consisting of a system of beam finite elements. For a shell under axial compression, the stress states, the stiffnesses and the critical loads of the shells simulated with two models under study are compared.

25