The use of irregular lattice shells as actuators for controlling elastic deformations

Actuators with separated pure and working chambers can eliminate contamination in devices applied in fine chemical, electronic and medical technologies and under pure vacuum conditions. This paper proposes a new type of actuators based on lattice shells with non-equilibrium initial configurations. The equilibrium configuration, which the shell seeks when internal pressure is applied, can be easy determined by minimizing the total potential energy of the system. An example of a cylindrical lattice shell taking the form of a torus when loaded by internal pressure is presented. This shell can be used in the designing of grippers and other devices. The stiffness of the structure is easily controlled by changing the pressure. Thus, irregular lattice shells are proposed for the first time to be used as actuators for controlling elastic deformations. The results of the research demonstrate the possibility of using lattice shells as actuators for controlling elastic deformations.

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