Modélisation numérique des grilles à double nappe à base de structures innovantes

Abstract

The thesis focuses on the study of double-layer tensegrity grids, designed for lightness and innovative potential in engineering. The main objective is to develop a numerical approach to analyze the nonlinear mechanical behavior of these structures, incorporating the effects of large deformations, cable relaxation, and bar buckling. A nonlinear computational code was developed to assess the performance of these grids under different loading conditions. Two main configurations were studied, revealing that the tensegrity ring grids (contiguous strut) offer advantages in terms of strength and structural efficiency. An in-depth analysis of the impact of bar buckling will help to better understand deformation mechanisms and improve the design of these systems for demanding structural applications. These results pave the way for lightweight, optimized, and reliable structures in various fields of application.