We consider a linear actuator based on a flexural force element made of a material with shape memory (SM) effect generating a useful force in one direction. A mathematical model developed for such an actuator makes it possible to connect its characteristics with functional properties of the material with the SM effect. The relations derived for the developed force and shaft displacement in dimensionless form describe the behavior of the force element in the form of a rod made of any material exhibiting a SM effect.

We consider a linear cyclic unilateral actuator based on a force element made of a material with the shape memory (SM) effect and a return spring. We have developed a model of such an actuator, which makes it possible to connect its characteristics with functional properties of the SM material. The model makes it possible to perform engineering design of the main characteristics of the cyclic actuator.