Dielectric polymers can achieve large, reliable deformation in response to an external electric field and have attracted significant interest as actuators and transducers. The electromechanical performance depends on the interaction between the visco-hyperelastic behaviour of materials and the Maxwell stress caused by the electric field. However, the mechanisms of complex structures, such as a surface-treated and filler-reinforced space system, are still not completely understood. A mechanical model for evaluating the surface effect and electromechanical performance is first proposed on the basis of visco-hyperelastic theory and statistical mechanics. Then, several factors affecting the geometry and material properties of complex structures are quantitatively investigated. The model will contribute to the development of dielectric polymers because its theoretical predictions are in agreement with existing experimental data.

介电聚合物可以响应于外部电场而实现大而可靠的变形，并且作为致动器和换能器引起了极大的兴趣。机电性能取决于材料的粘超弹性行为与电场引起的麦克斯韦应力之间的相互作用。然而，复杂结构的机制，例如经过表面处理和填充物增强的空间系统，仍未被完全理解。首先基于粘超弹性理论和统计力学，提出了一种评估表面效应和机电性能的力学模型。然后，定量研究了影响复杂结构的几何形状和材料特性的几个因素。