Study On Aging Characteristics Of Power Generation Ring Of Flexible Wave Energy Generator

Dielectric Elastomer(DE,Dielectric Elastomer)has good flexibility,large deformation,high specific energy density,and high conversion efficiency.It has become a new type of material for global research in the field of drive and power generation.Therefore,the life of the dielectric elastomer is evaluated.Is of great significance.Traditional wave energy generators are mostly based on rigid structures to capture and convert energy.They have common problems such as high cost,poor adaptability and poor controllability.This paper proposes a flexible wave energy generator that uses a dielectric elastomer to focus on its wave.Energy conversion device-dielectric elastomer life ring characteristics.The dielectric elastomer power generation ring is composed of a dielectric elastomer material,a flexible electrode,an electrical lead,a bias power source,and the like.Dielectric elastomer materials show different life conditions under different external environments,such as voltage and stress conditions.The dielectric elastomer power generation ring studied in this paper works under different voltage and high humidity environments,and its performance is affected by The effect of the flexible electrode and electrical lead of the power generation ring itself.Therefore,this paper mainly studies the electrical aging life and mechanical fatigue aging life of the dielectric elastomer power generation ring,and explores its life model and influencing factors.The main research contents of this paper are as follows:(1)Theoretical research on the aging of the power generation ring of dielectric elastomer.A flexible wave energy generator structure is proposed.The power generation principle of the wave energy generator,especially the dielectric elastomer ring,is elaborated,and the aging life of the ring is emphasized.Based on the electrical aging life model theory,several accelerated aging experimental methods are compared.After selecting the appropriate experimental method,the data principle is analyzed using the double weibull parameter method.Finally,under the condition ofmechanical fatigue aging,several fatigue damage parameters were analyzed and introduced.(2)Research and Analysis of Electrical Aging Life of Dielectric Elastomers.The stepwise voltage method was used to accelerate the electrical aging of the dielectric elastomer,and the constant voltage method was used for comparative analysis.The collected data was analyzed and analyzed using the double weibull parameter method,and verified by the method of maximum likelihood estimation.Comparative analysis shows that the results of the two test methods are similar,and the step voltage method experiment takes less time.Two kinds of dielectric aging life models of dielectric elastomer were obtained.VH4910 material has better life than VHB4905.The experimental results show that the dielectric elastomer power generation ring has a sufficiently long service life under ordinary operating voltage.(3)Study on the mechanical fatigue life of dielectric elastomers.A biaxial tensile test was used to establish the constitutive model of the dielectric elastomer power generation ring.The general dielectric elastomer SN life curve and the intrinsic model were substituted into ABAQUS and Fe-safe software.The electro-elastomer power generation ring simulates the SN life curve.The capacitor is used to characterize the life of the power generation ring,and a life test bench is set up for mechanical fatigue testing.The results show that the life of the dielectric elastomer power generation ring is not only affected by mechanical stretching,but also by its flexible electrodes and electrical leads.