Abstract
The present paper discusses different aspects of the structural control of smart systems with a focus on tensegrity structures. Special attention is paid to unique features of tensegrity systems, referred to by the authors as inherent, which are induced by infinitesimal mechanisms that are balanced with self-stress states. The following inherent properties are defined: self-control, self-diagnosis, self-repair and self-adjustment (active control). All these features are thoroughly described and illustrated on a series of analyses performed on numerical models of various tensegrity systems. The presented examples of the analyses of different tensegrity modules and multi-module structures show that it is possible to control their properties by adjusting the pre-stressing forces. Moreover, it is proven that the adjustment of self-stress forces in a tensegrity system allows one to repair the damaged structure by compensating the damaged member.
Highlights
Smart systems have been used in various fields of applied science for years
Examples of the analyses presented in this paper prove that tensegrity modules and lattices have all four key elements of inherent smartness, that is: self-control, self-diagnosis, self-repair and self-adjustment
The aim of the analysis was to show that tensegrities are capable of self-repair, not to investigate all possible cases of structural damage. Tensegrity structures owe this unique property of self-repair to infinitesimal mechanisms, which are balanced with self-stress states
Summary
Smart systems have been used in various fields of applied science for years. Civil engineering, is a relatively new area of application for such solutions [1]. It is possible to control their static and dynamic properties by adjusting the pre-stressing forces [15,16,17,18,19,20]. Self-adjustment (active control) in regard to tensegrity systems is related to the ability of self-adjustment through self-stress forces Both the pre-stressing of the whole structure and its part causes stiffening of the system and reduction of its displacements. The presented examples of the analyses of different tensegrity modules and multi-module structures show that it is possible to control their properties by adjusting the pre-stressing forces. Cables, The influence forces, as self-control structures, from a simple two pin-joined throughofa self-equilibrated three-strut simplex single well as additional self-stress due to geometrically non-linear properties on the response of the module to a plate-like multi-module tensegrity lattice. The influence of self-equilibrated forces, as well structures is self-stress analyzed. due
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