Analytical Modelling of Dielectric Polymer Actuators
MACDONALD DETTWILER AND ASSOCIATES LTD DARTMOUTH (NOVA SCOTIA)
Pagination or Media Count:
This report presents a literature review on the modeling of dielectric polymer actuators DPA. The principle of actuation of these actuators and the underlying physics of dielectrics is exposed in order to introduce all the sources of difficulty responsible for the complex behaviour of DPAs. A variational formulation is proposed to model the behaviour of DPA, based on the variation of the dielectric enthalpy and on the virtual work of the nonconservative part of the electric displacement. A finite element method is developed, based on this formulation. A reverse mapping requirement is raised that limits the type of element that can be used. An example of a possible implementation is presented for the case of a linear tetrahedron. Finally, DPA modeling challenges are summarized and recommendations are made for future work.
- Numerical Mathematics
- Machinery and Tools
- Electricity and Magnetism