Research On The Rotational Energy Harvesting Mechanism And Performance Of A Dielectric Elastomer Generator With Crank-connecting Rod Mechanisms

In order to harness ubiquitous rotational energy,researchers have developed a variety of devices harvesting rotational energy by the rationales of the rationales of electromagnetic,piezoelectric,electrostatic,and triboelectric in recent decades,but they have some problems such as low output power and poor adaptability.Nowadays,a dielectric elastomer generator(DEG)has attracted many researcher's attention because of its certain advantages,such as higher output power and output voltage.However,since the researches on DEG started late,research findings regarding the rotational energy harvesting based on dielectric elastomer(DE)are relatively few.Therefore,a dielectric elastomer generator with crank-connecting rod mechanisms is proposed to achieve the conversion of rotational energy into electrical energy.The main research work of this paper is stated as follows:(1)This paper studies the mechanical behavior of the out-of-plane deformation under the contact of a rigid ball,and the influence of some key parameters on the mechanical behavior of the out-of-plane deformation is analyzed through experiments and numerical simulation.(2)On this basis,the energy harvesting performance of the spherical contact DEG and the disk-connected DEG is analyzed respectively,and it is found through comparative research on energy harvesting performance of both different modes of DEGs that the disk-connected DEG has more advantages.(3)Based on the disk-connected DEG and combined with the crank-connecting rod mechanisms capable of converting rotational motion into linear reciprocating motion,this paper proposes a DEG model capable of harvesting rotational energy,conducts in-depth research from both theoretical and experimental aspects and validates its feasibility of harvesting rotational energy under rotational environment.On this basis,the influence of some key parameters on the energy harvesting performance of this system is discussed exhaustively through numerical simulation,and the system is optimized based on their results.