Numerical modeling of anisogrid structures deformation using schemes of high accuracy without saturation

S. Golushko^ab, B. V. Semisalov<sup>a

a</sup> Design-Technological Institute of Computer Equipment
^b Institute of Computing Technologies, Siberian Branch of the Russian Academy of Sciences, Novosibirsk

Abstract: The article describes a class of promising anisogrid structures representing mesh shell of unidirectional carbon. A brief analysis of existing approaches to modeling deformation of grid structures is presented. New mathematical and numerical models are proposed for reliable description of complex behavior of anisogrid structures under different kinds of loads. A high degree of accuracy and stability of the numerical model based on the ex-pansions of unknown functions in Chebyshev polynomials and Fourier series is caused by the lack of saturation of such approximations. Efficiency of the proposed models and techniques is demonstrated on the example of solving test boundary-value problems and a problem of axial compression of anisogrid cylindrical shell.

Keywords: anisogrid structure, cylindrical shell, carbon, continuum model, scheme with-out saturation, Fourier series, Chebyshev polynomial.

UDC: 539.3, 519.63

Received: 29.05.2015