NETWORK OF BENNETT LINKAGES AS DEPLOYABLE STRUCTURES

Most of the existing deployable structural mechanisms use 2D mechanisms as basic elements. Very little has been done to 3D mechanisms. This paper explores the possibility of using a special type of 3D mechanism — the Bennett linkage — to construct large deployable structures. As the result, a family of novel deployable structures consisting of Bennett loops are discovered and their geometrical characters are analysed. The structures contain a single degree of mobility and are geometrically overconstrained. Demonstration models based on the findings were made which successfully verified the concept. The same approach may be adopted for construction of large spatial deployable structures using other spatial mechanisms as basic elements.