Abstract
The structures of tensegrity are structures in equilibrium by an initial stress state. This stress state is the composition of elementary selfstress states which form a base. In order to identify the stress state of the structure, a nondestructive method based on the vibratory analysis has been used. The structure is subjected to a sinewave excitation for a given frequency. It appears that certain frequencies allow better an identification than others. This study tries to establish a relation between eigen mode, selfstress state and effectiveness of the identification. The article is based on a plane double layer tensegrity grid having six elementary selfstress states. The numerical simulations show the utility of the study for the identification of this structure.