Shape change analysis of tensegrity models

• Published in: Latin American Journal of Solids and Structures
• Main Author: Oh C.L.; Choong K.K.; Nishimura T.; Kim J.-Y.; Hassanshahi O.
• Format: Article
• Language: English
• Published: Brazilian Association of Computational Mechanics 2019
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85073282213&doi=10.1590%2f1679-78255407&partnerID=40&md5=2623090435e626e71e3493c9e3d98c44

This paper presents a computational strategy for shape change of tensegrity models to achieve the prescribed target coordinates of a set of monitored nodes via forced elongation of cables. Mathematical formulation for incremental equilibrium equations of a tensegrity model during the shape change analysis is derived and presented. An optimization approach in determining forced elongation of cables using sequential quadratic programming with defined inequality constraints is formulated and presented. Four tensegrity models namely the simplex, quadruplex, two-stage tensegrity model and tapered three-stage tensegrity model are tested using the proposed shape change algorithm. Capability of tensegrity models to undergo bending, axial, twisting deformation and combinations of these deformations is also described. © 2019, Brazilian Association of Computational Mechanics. All rights reserved.