Rate dependent constitutive behavior of dielectric elastomers and applications in legged robotics
Publication Type:
Conference
Authors:
Co-Authors:
Paul Miles, Somayeh Mashayekhi, and M. Yousuff Hussaini
Year Published:
2017
Abstract:
Dielectric elastomers exhibit novel electromechanical coupling that has been exploited in many adaptive structure applications. Whereas the quasi-static, one-dimensional constitutive behavior can often be accurately quantified by hyperelastic functions and linear dielectric relations, accurate predictions of electromechanical, rate-dependent deformation during multiaxial loading is non-trivial. In this paper, an overview of multiaxial electromechanical membrane finite element modeling is formulated. Viscoelastic constitutive relations are extended to include fractional order. It is shown that fractional order viscoelastic constitutive relations are superior to conventional integer order models. This knowledge is critical for transition to control of legged robotic structures that exhibit advanced mobility.
Conference Name:
SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring 2017
Conference Location:
Portland, Oregon, United States
Other Numbers:
Refereed Designation:
Date Published:
4/17/2017