Static and dynamic instability modeling of electro-magneto-active polymers with various entanglements and crosslinks

A Khurana, D Kumar, AK Sharma… - International Journal of …, 2022 - Elsevier
Abstract Electro-magneto-active (EMA) polymers-based smart actuators suffer from electro-
magneto-mechanical instability (EMMI) phenomena arising due to the positive feedback …

Dynamic modeling of hard-magnetic soft actuators: Unraveling the role of polymer chain entanglements, crosslinks, and finite extensibility

S Nandan, D Sharma, AK Sharma - Journal of Magnetism and Magnetic …, 2023 - Elsevier
In recent years, there has been increasing interest in hard-magnetic soft materials (HMSMs)
due to their ability to retain high residual magnetization and undergo large deformations …

Dynamic modeling of dielectric elastomer-based minimum energy structures with membrane entanglements and finite extensibility

A Khurana, A Kumar, AK Sharma, MM Joglekar - Sādhanā, 2022 - Springer
The shape morphing behavior of dielectric elastomer-based minimum energy structures
(DEMES) generated by combining an inextensible frame and a pre-stretched dielectric …

Effect of polymer chains entanglements, crosslinks and finite extensibility on the nonlinear dynamic oscillations of dielectric viscoelastomer actuators

A Khurana, A Kumar, AK Sharma, MM Joglekar - Nonlinear Dynamics, 2021 - Springer
Soft materials exhibiting large deformation under external stimuli have gained an increasing
attention in the recent past because of their potential applications in soft transducers aimed …

Nonlinear dynamic analysis of aniso-visco-hyperelastic dielectric elastomer actuators

K Kashyap, AK Sharma… - Smart Materials and …, 2020 - iopscience.iop.org
Dielectric elastomers (DEs) are a class of highly deformable electro-active polymers (EAPs)
employed for electromechanical transduction technology. Imparting anisotropy to the …

Effect of anisotropy on the dynamic electromechanical instability of a dielectric elastomer actuator

AK Sharma, MM Joglekar - Smart Materials and Structures, 2018 - iopscience.iop.org
Electrically driven dielectric elastomer actuators (DEAs) are susceptible to an
electromechanical instability because of a positive feedback between the applied electric …

Tunable electroelastic waves in soft dielectric elastomer phononic crystals: Exploring the effect of polymer chain network architecture

AK Sharma - International Journal of Applied Mechanics, 2024 - ui.adsabs.harvard.edu
The polymer chain network within the dielectric elastomers (DEs) contains numerous
entanglements, crosslinks and finite extensibility, all of which play a substantial role in the …

Modeling and experimental study on dielectric elastomers incorporating humidity effect

J Zhang, X Liu, L Liu, Z Yang, P Li, H Chen - Europhysics Letters, 2020 - iopscience.iop.org
In this research, we carry out a modeling and experimental study on the performance of a
VHB 4910 elastomer considering the humidity effect. Firstly, based on the uniaxial tension …

A molecular perspective to analytical modeling that reveals new instabilities in dielectric elastomer transducers

AT Mathew, TVK Vo, SJA Koh - Journal of the Mechanics and Physics of …, 2019 - Elsevier
We use a four-parameter material model for polymers-the Edward–Vilgis (EV) model, which
models polymeric crosslinks, sliplinks, slippage and inextensibility to analyze dielectric …

Snap-through instability analysis of dielectric elastomers with consideration of chain entanglements

J Zhu, J Luo, Z Xiao - Materials Research Express, 2018 - iopscience.iop.org
It is widely recognized that the extension limit of polymer chains has a significant effect on
the snap-through instability of dielectric elastomers (DEs). The snap-through instability …