Mechanical Response Of Tubular Dielectric Elastomer Membrane-Spring System

Electro active polymer material is a new kind of polymer material, which is mainly made of rubber, gel and so on. Electro active polymer has excellent flexibility and light weight, can bend or stretch, not easily broken, and can be used to simulate the activity of human body muscle. At the same time, the electro active polymer material can be widely used in the field of the preparation of the actuator and generator. Because the electro active polymer material can realize the mutual transformation between electric energy and mechanical energy. By the electroactive polymer materials preparation of generator, actuator device has light quality,response speed, large deformation, high reliability advantages, so in power generation, camera equipment, aerospace, robot and will have far more widespread application. In order to realize the conversion of electroactive polymer materials mechanical and electrical, at this stage,there are many studies of dielectric elastomer, part of the core is by in films like electroactive polymer materials on both sides of the coated with flexible conductive material composed of sandwich structure. State in service, upper and lower surfaces of the applied voltage. At this time electroactive polymer materials will decrease the thickness of the increased area, achieve actuation, electrical energy is converted into mechanical energy; on the other hand, you can achieve the mechanical energy to electrical energy conversion.. Through the above two kinds of properties, we can use the dielectric elastomer in the preparation of the actuator and the generator. The main research work of this paper includes:(1) The response of the system of a tubular dielectric elastomer film and a spring to a system with a large force is studied. The mechanical model of the established tubular dielectric elastomer film, light spring system in the function of the external loading and the voltage, according to the theory of nonlinear dielectric deformation field, combined with the thermodynamics analysis method, to obtain the governing equations for calculation of the thin film surface and large deformation, to control equation is solved numerically using the shooting method, obtained the distribution law of various physical quantities. The results show that the initial length of the applied voltage and the spring has a significant effect on the stiffness coefficient of the spring, and the deformation of the film spring can be controlled by adjusting the voltage and the spring parameters. The research results will be the optimization design of tubular dielectric elastomer film spring system and improve tubular dielectric elastomer film spring system work efficiency gives some theoretical support, and the electro active polymer film spring system in actuator preparation in the field of development provides some new ideas.(2) Tubular electric electroactive polymer film spring system were different rings to pretensile mechanical analysis, studied different ring to the pre stretching contour of tubular dielectric elastomer film spring system, output displacement and the failure limit, also disguised analysis the ring to the pre stretched and oriented pre stretching of different. It provides some theoretical support for the design of the actuator of the core part of the tubular dielectric elastomer film spring system.