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Montana Tech is inviting high school students to attend its spring open house, Tech Day.Students will have the opportunity to explore numerous different hands-o ....
Tensegrities are pin-jointed frameworks consisting of discontinuous compressive struts held within a tensioned cable net. Existing in a state of self-equilibrium, tensegrity structures can be found in vary-ing states of rigidity dependent on the initial pretension existing within the cables. The current state of tensegrity understanding appears comprehensive, and yet, tensegrities appear to be relegated to a class of architectural sculpture, due to the complexity associated with understanding their behaviour. This com-plexity is often attributed to the lack of application for tensegrity structures within the built environment. For this reason, this thesis aims to examine the effect of compressive loading on tensegrities, and how different pretensions, geometries and materials aid in resisting this applied loading. A review was conducted to determine a current understanding of load bearing tensegrity structures. Through conducting this review, it was found that stiffness and load bea ....
Abstract Tensegrity structures present new possibilities to the field of structural engineering, owing to their ability to efficiently distribute compressive loads associated with their non-orthogonal design. Previous research has shown that when pretensioned, tensegrities exhibit higher resistance to compressive loading. However, over-tensioning can have adverse effects, reducing the tensegrities overall resistance to compressive loading. The geometry of a tensegrity affects how the structure reacts to loading, and the prestress and loading can concurrently affect geometry. This paper uses genetic algorithms to optimize the pretension loads in the cables of a tensegrity to deliver the highest overall vertical load capacity. The results are applied to determine the ultimate load-carrying capacity of tensegrities under a compressive load and determine the optimal aspect ratio at which this is achieved. By optimizing the pretension, the tensegrity can withstand compressive loads ....