Session Details
MS17-2: Smart and Active Materials: Experiments, Modelling, and Simulation (Ganzes Minisymposium anzeigen)
Thursday, 12. October 2017; 13:30 - 15:30 Uhr in Raum 7.22
Sitzungsleitung: Krishnendu Haldar
13:30
A variational and computational framework for large strain electromechanics based on convex multi-variable energies (Keynote)
Rogelio Ortigosa (Swansea University), Antonio J. Gil (Swansea University)
Kurzfassung:
This paper presents a variational and computational framework for nonlinear electromechanics based on a new convex multi-variable definition of the internal energy. This ensures: a) the material stability of the governing equations (ellipticity) and b) allows to introduce new multi-field variational principles which open up interesting possibilities in terms of using various interpolation spaces for the different fields, leading to enhanced type formulations.
A variational and computational framework for large strain electromechanics based on convex multi-variable energies (Keynote)
Rogelio Ortigosa (Swansea University), Antonio J. Gil (Swansea University)
Kurzfassung:
This paper presents a variational and computational framework for nonlinear electromechanics based on a new convex multi-variable definition of the internal energy. This ensures: a) the material stability of the governing equations (ellipticity) and b) allows to introduce new multi-field variational principles which open up interesting possibilities in terms of using various interpolation spaces for the different fields, leading to enhanced type formulations.
14:10
Constitutive modeling of eletroelasticity based on the analytical network averaging concept
Vu Ngoc Khiêm (RWTH Aachen University), Mikhail Itskov (RWTH Aachen University)
Kurzfassung:
In this contribution, we develop a physically-based constitutive model capturing electroelasticity in electrostrictive elastomers based on an extension of the analytical network-averaging concept. The proposed model includes a few physically motivated material constants and demonstrates good agreement with experimental data of dielectric elastomers.
Constitutive modeling of eletroelasticity based on the analytical network averaging concept
Vu Ngoc Khiêm (RWTH Aachen University), Mikhail Itskov (RWTH Aachen University)
Kurzfassung:
In this contribution, we develop a physically-based constitutive model capturing electroelasticity in electrostrictive elastomers based on an extension of the analytical network-averaging concept. The proposed model includes a few physically motivated material constants and demonstrates good agreement with experimental data of dielectric elastomers.
14:30
An optimal solid-shell finite element for modeling dielectric elastomers
Dana Bishara (Technion – Israel Institute of Technology), Mahmood Jabareen (Technion – Israel Institute of Technology)
Kurzfassung:
Dielectric elastomer (DE) based actuators are considered an emerging promising class of thin actuators, which may undergo large deformations and exhibit various modes of activation. For modeling DEs there is a need for a proper finite element technology for the numerical simulations, which captures their realistic response. A model that is calibrated to VHB will be presented, and an efficient low-order finite element that is able to tackle locking pathologies will be introduced.
An optimal solid-shell finite element for modeling dielectric elastomers
Dana Bishara (Technion – Israel Institute of Technology), Mahmood Jabareen (Technion – Israel Institute of Technology)
Kurzfassung:
Dielectric elastomer (DE) based actuators are considered an emerging promising class of thin actuators, which may undergo large deformations and exhibit various modes of activation. For modeling DEs there is a need for a proper finite element technology for the numerical simulations, which captures their realistic response. A model that is calibrated to VHB will be presented, and an efficient low-order finite element that is able to tackle locking pathologies will be introduced.