Multi-Stable Structures

This project involves investigation of multi-stable structures, all of which have a finite number of discrete, stable states. Possible applications for multi-stable structures ranges from control vents in ventilation systems to robotic arms in space. As they have no moving parts, these structures can potentially be made much more reliable than conventional mechanisms. Several different types of structures have been investigated.

The first type of structure that is being investigated is overlapping domes in a thin metal strip. In this case, the effect of the domes on the stiffness of the strip was investigated. More information about this can be found here.

The second type of structure is being investigated is bi-stable, linear mechanisms. These mechanisms have only one degree of freedom and are only stable in two different states. Three different conceptual designs have been built, analysed analytically and tested experimentally. More information can be found here.

The third type of structure being investigated is multi-stable hoops. These hoops, constructed out of tape springs, each have a number of discrete stable states. The workspace of an arm constructed from a number of such hoops has also been investigated. More information about multi-stable hoops can be found here.

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Last updated on the 8th of February, 2003

T. Schioler - ts229@cam.ac.uk