Thermoelectromechanical coupling of conical dielectric elastomer under polarization saturation

Abstract

Under an electric field, three types of polarization occur in dielectric elastomers. The phenomenon of linear polarization has been extensively studied. However, there is still a lack of in-depth studies on other types of polarization and their effects in the temperature field. In this paper, firstly, the constitutive equation of coupling temperature under polarization saturation is established. Secondly, the constitutive equation of coupling temperature and electrostrictive coefficient under polarization saturation is established, and the behavior of dielectric elastomer under polarization saturation is discussed respectively. Numerical analysis of dielectric elastomers shows that temperature and appropriate electrostriction coefficient can improve the stability of dielectric elastomers. It is hoped that this work will guide the development of dielectric elastomer materials and devices for applications operating at variable temperatures.