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Automatically assembled large-scale tensegrities by truncated regular polyhedral and prismatic elementary cells

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As a novel type of reticulated structures, tensegrities have found various applications in

science and engineering. In this paper, an ingenious assembly method is developed to

construct large-scale tensegrities using truncated regular polyhedral tensegrities and

prismatic tensegrities as elementary cells. The truncated polyhedral tensegrities with

regular polygons on their surfaces are specified as islands, and the prismatic tensegrities

are used as bridges to connect these polygons along different directions. This method

allows us to construct many types of large-scale tensegrities satisfying the demands

of the size and topology. Based on the node-on-node assembly scheme, Z-based truncated

regular octahedral tensegrity and its matching quadruplex prismatic tensegrity are

employed to produce representative examples with traditional and untraditional shapes.

Their mechanical properties are evaluated from the viewpoints of self-equilibrium, stability,

and mechanical responses. Our results help to manufacture demanded large-scale

tensegrities with delicate mechanical properties, and may be beneficial to construct

composite metamaterials.
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