Dynamic electromechanical performance of viscoelastic dielectric elastomers

Release Time:2025-04-30  Hits:

• Date:2025-04-30
• Title of Paper:Dynamic electromechanical performance of viscoelastic dielectric elastomers
• Journal:《Journal of Applied Physics》（中科院 3区）
• Summary:Because　of　their　viscoelasticity,　dielectric　elastomers　(DEs)　are　able　to　produce　a　large　time-dependent　electromechanical　deformation.　In　the　current　study,　we　use　the　Euler-Lagrange　equation　to　characterize　the　influence　of　temperature,　excitation　frequency,　and　viscoelasticity　on　the　dynamic　electromechanical　deformation　and　stability　of　viscoelastic　dielectrics.　We　investigate　the　time-dependent　dynamic　performance,　hysteresis,　phase　diagram,　and　Poincare　map　associated　with　the　viscoelastic　dissipative　process.　The　results　show　that　the　dynamic　response　has　strong　temperature　and　frequency　dependencies.　It　is　observed　that　the　natural　frequency　of　the　DE　decreases　with　increasing　temperature　and　the　maximal　amplitude　increases　at　higher　temperatures.　At　relative　low　frequencies,　the　amplitude　is　very　small　and　the　viscoelasticity　has　a　significant　effect　on　the　oscillation　of　the　system.　Furthermore,　the　results　show　that　the　viscoelasticity　has　a　relatively　major　influence　on　the　dynamic　performance　for　DEs　that　have　very　low　relaxation　times.　(C)　2013　AIP　Publishing　LLC.
• Co-author:Sheng, Junjie;Chen, Hualing;Liu, Lei;Zhang, Junshi;Wang, Yongquan;Jia, Shuhai
• Volume:114(13)
• Translation or Not:No
• Date of Publication:2013-10-08