Ionic polymer-polymer composites (IP2Cs) are electroactive polymers which can be used both as sensors and as actuators. In this paper, a new multiphysics model of IP2Cs working as an actuator is presented and implemented using a finite element methods solver (COMSOL Multiphysics). The model involves electrical, mechanical, chemical, and thermal effects and yields a unique solution. Knowledge acquired by measuring campaigns has been included in the model. More specifically the frequency dependence of Young's modulus was experimentally determined and introduced in such a model. A frequency-domain investigation is performed and a model optimization procedure that integrates the Nelder-Mead simplex method with the COMSOL Multiphysics models is exploited to identify IP2C model parameter by fitting experimental data. A fractional order dynamics has been identified in the model, confirming previous studies on IPMC gray box modeling and on electroactive polymeric devices.
|Titolo:||A multiphysics frequency-dependent model of an IP2C actuator|
|Data di pubblicazione:||2014|
|Citazione:||A multiphysics frequency-dependent model of an IP2C actuator / Caponetto R; De Luca V; Di Pasquale G; Graziani S; Sapuppo F; Umana E.. - In: IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT. - ISSN 0018-9456. - 63:5(2014), pp. 125016.1347-125016.1355.|
|Appare nelle tipologie:||1.1 Articolo in rivista|