New insight to nonlinear electromechanical deformation of hyperelastic beams and frames with a novel beam element

IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2025-04-09 DOI:10.1016/j.compstruct.2025.119196

Nasser Firouzi , Marco Amabili , Timon Rabczuk

引用次数: 0

Abstract

Electroactive polymers (EAPs) are used in several devices like sensors and actuators. This study aims to develop a formulation for large electromechanical deformations of hyperelastic electroactive beam-like elastomers; the neo-Hookean hyperelastic law is used. For this purpose, a new seven-parameter electromechanical beam element is introduced to capture the response of hyperelastic beams to electric loading. Moreover, the element is expanded for frame structures using a transformation matrix. Because the constitutive relations are extremely nonlinear, a finite element formulation in the Total Lagrangian framework is derived. To investigate the performance of the proposed model, some examples are solved, and very good agreements with results available in the literature, as well as experimental results, are achieved. The proposed model can be used to develop electromechanical actuators and manipulators.

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一种新型梁单元对超弹性梁和框架非线性机电变形的新认识

电活性聚合物（EAPs）用于传感器和执行器等多种设备。本研究的目的是建立一个超弹性电活性类梁弹性体的大机电变形公式；采用新胡克超弹性定律。为此，引入了一种新的七参数机电梁单元来捕捉超弹性梁对电载荷的响应。此外，使用变换矩阵对框架结构展开单元。由于本构关系是极非线性的，导出了全拉格朗日框架下的有限元表达式。为了验证所提模型的性能，对一些算例进行了求解，结果与文献和实验结果非常吻合。该模型可用于开发机电作动器和机械手。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.