Dielectric Elastomer Spring-Roll Bending Actuators: Applications in Soft Robotics and Design

Li, Jinrong; Liu, Liwu; Liu, Yanju; Leng, Jinsong

doi:10.1089/soro.2018.0037

Cited by 84 publications

(52 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dielectric capacitors, which store energy electrostatically in dielectric materials in the form of an electric field between two electrodes, have the highest power density (on the order of megawatts) and the fastest charge/discharge rate (on the order of microseconds) among the electrical energy storage devices, [ 1–3 ] providing parts for numerous electric circuits with a wide range of power rating, [ 4 ] for power plants that hold ultrahigh voltage to transport electricity, [ 5 ] and for new applications such as artificial muscles for soft robotics, [ 6 ] solid‐state refrigeration, [ 7,8 ] and micro‐electromechanical system (MEMS). [ 9 ]…”

Section: Figurementioning

confidence: 99%

Interface‐Strengthened Polymer Nanocomposites with Reduced Dielectric Relaxation Exhibit High Energy Density at Elevated Temperatures Utilizing a Facile Dual Crosslinked Network

Liu

Shen

et al. 2020

Small

View full text Add to dashboard Cite

High‐temperature ceramic/polymer nanocomposites with large energy density as the reinforcement exhibit great potential for energy storage applications in modern electronic and electrical power systems. Yet, a general drawback is that the increased dielectric constant is usually achieved at the cost of decreased breakdown strength, thus leading to moderate improvement of energy density and even displaying a marked deterioration under high temperatures and high electric fields. Herein, a new strategy is reported to simultaneously improve breakdown strength and discharged energy density by a step‐by‐step, controllable dual crosslinking process, which constructs a strengthened interface as well as reduces molecular chains relaxation under elevated temperatures. Great breakdown strength and discharged energy density is achieved in the dual crosslinked network BT‐BCB@DPAES nanocomposites at elevated temperatures when compared to noninterfacial‐strengthened, BT/DPAES composites, i.e., an enhanced breakdown strength and a discharged energy density of 442 MV m−1 and 3.1 J cm−3, increasing by 66% and 162%, and a stable cyclic performance over 10 000 cycles is demonstrated at 150 °C. Moreover, the enhancement through the synergy of two crosslinked networks is rationalized via a comprehensive phase‐field model for the composites. This work offers a strategy to enhance the electric storage performances of composites at high temperatures.

show abstract

Section: Figurementioning

confidence: 99%

Interface‐Strengthened Polymer Nanocomposites with Reduced Dielectric Relaxation Exhibit High Energy Density at Elevated Temperatures Utilizing a Facile Dual Crosslinked Network

Liu

Shen

et al. 2020

Small

View full text Add to dashboard Cite

show abstract

“…Therefore, a gripper with desirable bending direction, depending on target objects, can be fabricated. As another mechanism of gripping technology, DE spring-roll bending actuators, as mentioned in Section 4, are able to constitute a gripper system [97]. One bending actuator functions as a DE finger, and the DE gripper consists of three bending actuators.…”

Section: Appl Sci 2019 9 X For Peer Review 13 Of 32mentioning

confidence: 99%

Dielectric Elastomer Actuator for Soft Robotics Applications and Challenges

et al. 2020

View full text Add to dashboard Cite

This paper reviews state-of-the-art dielectric elastomer actuators (DEAs) and their future perspectives as soft actuators which have recently been considered as a key power generation component for soft robots. This paper begins with the introduction of the working principle of the dielectric elastomer actuators. Because the operation of DEA includes the physics of both mechanical viscoelastic properties and dielectric characteristics, we describe theoretical modeling methods for the DEA before introducing applications. In addition, the design of artificial muscles based on DEA is also introduced. This paper reviews four popular subjects for the application of DEA: soft robot hand, locomotion robots, wearable devices, and tunable optical components. Other potential applications and challenging issues are described in the conclusion.

show abstract

“…In order to predict the PAM force in a static state, the modelling method evolves from the geometrical model [4,7,8] and the phenomenological model [9,10] to the empirical model [11,12]. However, the nonlinear behaviour of PAMs and the underlying mechanism are hard to describe due to the neglect in the property of rubbery materials and the accurate 3-Dimensional structure of PAMs.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the e ect of air pressures and contractions rather than structural factors on the force of PAM are mostly reported, which makes it di cult to predict the mechanical and morphological performance of PAM with new structures or di erent materials [8]. Among di erent modelling techniques, the fundamental geometrical model, a means based on an assumption of the simpli ed cylindrical structure of PAM, is generally employed, and it o en exhibits a relatively high deviation from the experiment [4,7,8]. Tsagarakis et al [12] improved the model by considering the elasticity of rubber, and the friction e ect and the distortion e ect.…”

Section: Introductionmentioning

confidence: 99%

Analysis on the Impact Factors for the Pulling Force of the McKibben Pneumatic Artificial Muscle by a FEM Model

Wang

Donghai

et al. 2020

Journal of Robotics

View full text Add to dashboard Cite

Modelling the behaviour of Pneumatic Artificial Muscle (PAM) has proven difficult due to its highly complicated structure, nonlinear nature of rubbery material, and air compressibility. To overcome these limitations, a FEM (Finite Element Method) model using Abaqus and CATIA is derived for the quantitative analysis on the impact of different factors on the pulling force of PAM. In the Abaqus a two parameter Mooney–Rivlin model is utilized to consider the hyper-elastic nature of flexible material. Then both Abaqus and CATIA are used in the parametric design of a 3-Dimensional model of PAM. Furthermore, the FEM model is employed to predict the static force exerted by PAM and the results show that the model is promising. The FEM model produces closer results to the test data for the typical PAM. Nonlinear behaviour of PAM is found to be obvious with an increase in both the contraction and the air pressure, different from the linear curves obtained by the fundamental geometrical model. Nonlinear changes in the PAM force are also observed in the numerical study on the effect of structural factors including initial braid angle, initial diameter, initial wall thickness, and flexible material. Besides, these phenomena can be explained by a connection between mechanical and morphological behaviour of PAMs with the FEM model. Generally, this modelling approach is more accurate compared to the fundamental theoretical model and more cost competitive compared to the empirical methods.

show abstract

Dielectric Elastomer Spring-Roll Bending Actuators: Applications in Soft Robotics and Design

Cited by 84 publications

References 39 publications

Interface‐Strengthened Polymer Nanocomposites with Reduced Dielectric Relaxation Exhibit High Energy Density at Elevated Temperatures Utilizing a Facile Dual Crosslinked Network

Interface‐Strengthened Polymer Nanocomposites with Reduced Dielectric Relaxation Exhibit High Energy Density at Elevated Temperatures Utilizing a Facile Dual Crosslinked Network

Dielectric Elastomer Actuator for Soft Robotics Applications and Challenges

Analysis on the Impact Factors for the Pulling Force of the McKibben Pneumatic Artificial Muscle by a FEM Model

Contact Info

Product

Resources

About