J4 ›› 2015, Vol. 12 ›› Issue (1): 142-151.doi: 10.1016/S1672-6529(14)60108-6
Modeling of IPMC Cantilever’s Displacements and Blocking Forces
David Vokoun1,2, Qingsong He2, Ludek Heller1, Min Yu2, Zhendong Dai2
- 1. Institute of Physics of the ASCR, Prague 182 21, Czech Republic
2. Institute of Bio-Inspired Structure and Surface Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Modeling of IPMC Cantilever’s Displacements and Blocking Forces
David Vokoun1,2, Qingsong He2, Ludek Heller1, Min Yu2, Zhendong Dai2
- 1. Institute of Physics of the ASCR, Prague 182 21, Czech Republic
2. Institute of Bio-Inspired Structure and Surface Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
摘要：
The motion of an Ionic Polymer Metal Composite (IPMC) cantilever under a periodic voltage control is modeled. In our finite element 3D model, we follow both the free tip displacements and the blocking forces for various thicknesses and elastic constants of the ionomer membrane. It turns out that the maximum displacement of the free tip strongly depends on the value of the Young’s modulus of the electrodes. Furthermore, the maximum blocking force, Fmax, increases with the thickness of the ionomer membrane. At constant values of Young’s moduli of the electrodes and ionomer membrane thickness, if the Young’s modulus of the ionomer membrane varies within the range from 0.2 MPa to 1 GPa, the change of Fmax is less than 10 %. The simulated maximal displacements, blocking forces and electrical currents are compared with the corresponding sets of ex-perimental data, respectively. Qualitative agreement between the simulated and the respective measured data profiles is ob-tained. Furthermore, it is found that the assumption of electrostatic interactions in the cation depleted region of the ionomer membrane has a negligible effect. The advantage of the model consists in its simplicity.