On structural models for ionic polymer metal composites (SPIE Best Student Paper Finalist)
On structural models for ionic polymer metal composites (SPIE Best Student Paper Finalist)
复制标题
离子聚合物金属复合材料的结构模型(SPIE 最佳学生论文入围)
DOI:
10.1117/12.2558302
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Porfiri, Maurizio
中科院分区:
文献类型:
--
作者:
Boldini, Alain;Bardella, Lorenzo;Porfiri, Maurizio
Ionic polymer metal composites (IPMCs) are a class of soft electroactive polymers. IPMCs comprise a soft ionic polymer core, on which two stiff metal electrodes are plated. These active materials exhibit large bend- ing upon the application of a small driving voltage across their electrodes, in air or in aqueous environments. In a recent work, we presented compelling theoretical and numerical evidence suggesting that ionic polymer membranes exhibit complex multiaxial deformations neglected by reduced-order structural models. Where most beam theories (including Euler-Bernoulli, Timoshenko, and most higher-order shear deformation models) would suggest vanishing through-the-thickness deformation, we discover the onset of localized deformation that rever- berates into axial stretching. Building upon this effort, here we investigate the role of the electrodes and shear on multiaxial deformations of IPMCs. We establish a novel structural theory for IPMCs, based on the Euler- Bernoulli kinematics enriched with the through-the-thickness deformation in the ionic polymer, computed from a Saint-Venant-like problem for uniform bending. While considering boundary conditions that elicit non-uniform bending, we compare the results of this model against classical Euler-Bernoulli beam theory without enrichment and finite element simulations, encapsulating the nonlinear response of the material. We demonstrate that our theory can predict the macroscopic displacement of the IPMC, along with the localized deformation in the ionic polymer at the interface with the electrodes, which are not captured by the classical Euler-Bernoulli beam theory. This work paves the way to the development of more sophisticated structural theories for IPMCs and analogous active materials, affording an accurate description of deformations at a limited computational cost.
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DOI:
10.1016/j.ijengsci.2020.103227
发表时间:
2020-04-01
影响因子:
6.6
作者:
Boldini, Alain;Porfiri, Maurizio
通讯作者:
Porfiri, Maurizio
DOI:
10.1186/s40638-017-0081-3
发表时间:
2017
期刊:
Robotics and biomimetics
影响因子:
--
作者:
Chen Z
通讯作者:
Chen Z
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
通讯作者:
--
DOI:
--
发表时间:
2018
期刊:
Advances in Manufacturing and Processing of Materials and Structures
影响因子:
--
作者:
T. Stalbaum;Sarah Trabia;T. Hwang;Zakai J Olsen;S. E. Nelson;Qi Shen;Dong‐Chan Lee;K. Kim;James D. Carrico;K. Leang;V. Palmre;Jungsoo Nam;I. Park;R. Tiwari;Doyeon Kim;Sungjun Kim
通讯作者:
Sungjun Kim
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
M. Shahinpoor
通讯作者:
M. Shahinpoor