中国物理学会期刊网
Chin.Phys.B  2017, Vol.26 Issue (12): 126102  DOI:10.1088/1674-1056/26/12/126102
Finite element analysis of ionic liquid gel soft actuator
College of Electronics and Information Engineering, Tongji University, Shanghai 201804, China

Abstract

A new type of soft actuator material-ionic liquid gel (ILG), which consists of HEMA, BMIMBF4, and TiO2, can be transformed into gel state under the irradiation of ultraviolet (UV) light. In this paper, Mooney-Rivlin hyperelastic model of finite element method is proposed for the first time to study the properties of the ILG. It has been proved that the content of TiO2 has a great influence on the properties of the gel, and Young's modulus of the gel increases with the increase of its content, despite of reduced tensile deformation. The results in this work show that when the TiO2 content is 1.0 wt%, a large tensile deformation and a strong Young's modulus can be obtained to be 325% and 7.8 kPa, respectively. The material parameters of ILG with TiO2 content values of 0.2 wt%, 0.5 wt%, 1.0 wt%, and 1.5 wt% are obtained, respectively, through uniaxial tensile tests, including C10, C01, C20, C11, C02, C30, C21, C12, and C03 elements. In this paper, the large-scaled general finite element software ANSYS is used to simulate and analyze the ILG, which is based on SOLID186 element and nonlinear hyperelastic Mooney-Rivlin model. The finite element simulation analysis based stress-strain curves are almost consistent with the experimental stress-strain curves, and hence the finite element analysis of ILG is feasible and credible. This work presents a new direction for studying the performance of soft actuator for the ILG, and also contributes to the design of soft robot actuator.
收稿日期:2017-06-08

基金资助

Project supported by the National Natural Science Foundation of China (Grant Nos. 51538009 and 51605334) and the Natural Science Foundation of Shanghai Municipality, China (Grant No. 08002360285).

引用本文

[英文]
Bin He, Cheng-Hong Zhang, An Ding. Finite element analysis of ionic liquid gel soft actuator[J]. Chin. Phys. B, 2017, 26(12): 126102.
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