Numerical conjugate problem solution algorithm for fluid-deformable body system

This paper describes the numerical conjugate problem solution algorithm for fluid-deformable body system. It is based on respective subtasks according to physical principals. To solve these subtasks, independent "black box" program modules are used. These modules are connected by conjugate conditions. Fluid phase domain boundary interface is discrete movable i.e. it is not movable on the integration time step, but its position is adjusted on the next time step

Calculation method for cable-beam shell structures

This paper presents a calculation method suitable for cable-beam shell structures. It is based on both nonlinear finite element and force density methods. The main idea is to define the solution sequence for stress - strain state problem of above mentioned structures by nonlinear finite element method. Every successive solution involves the previous one as an initial estimate in convergent domain. To find an initial estimate for the first solution a force density method is used. The proposed method is tested on a new large space umbrella reflector

Modelling large-sized mesh reflector with extended aperture

Offset large-sized deployable mesh reflector with symmetric frontal and rear nets is described in the paper. This reflector involves extended aperture area and reduced framework elements by applying beam elements in the peripheral areas of reflecting surface. Strain-stress analysis is conducted to calculate reflecting surface shape of required accuracy

Stress-strain state simulation of large-sized cable-stayed shell structures

This paper studies the opportunities for applying framed cable-stayed shell structures to generate innovative structures in civil engineering. Numerical solution methods for stress-strain state problems of these kinds of geometrically nonlinear structures were developed. Developed methods efficiency is presented by a range of large-dimensional space antenna reflectors