电活性介电弹性体气球的可调谐变形
Tunable morphing of electroactive dielectric-elastomer balloons
AI总结：
本文研究层状介电弹性体气球在电压与内压下的非线性变形与形态转变，提出非线性电弹性理论并结合表面阻抗矩阵法与有限元模拟，证明可通过被动弹性层参数控制屈曲与颈缩起始，为软体机器人等应用提供设计依据。
摘要：
设计具有可调谐形状的智能器件在工业制造中具有重要应用。本文研究了在施加径向电压和内压作用下，层状DE气球在屈曲、颈缩和跳跃失稳之间的非线性变形与形态转变。我们提出了一种非线性电弹性的一般数学理论，能够解释由机电耦合引发的有限非均匀应变。我们利用表面阻抗矩阵方法研究了球对称气球形态转变的起始条件。此外，我们通过有限元数值模拟研究了分叉分支的非线性演化。我们的分析表明，设计可调谐DE球体是可行的，其屈曲和颈缩的起始可通过被动弹性层的几何与力学性质来控制。相关应用包括软体机器人和机械致动器。
英文摘要：
Designing smart devices with tunable shapes has important applications in industrial manufacture. In this paper, we investigate the nonlinear deformation and the morphological transitions between buckling, necking, and snap-through instabilities of layered DE balloons in response to an applied radial voltage and an inner pressure. We propose a general mathematical theory of nonlinear electro-elasticity able to account for finite inhomogeneous strains provoked by the electro-mechanical coupling. We investigate the onsets of morphological transitions of the spherically symmetric balloons using the surface impedance matrix method. Moreover, we study the nonlinear evolution of the bifurcated branches through finite element numerical simulations. Our analysis demonstrates the possibility to design tunable DE spheres, where the onset of buckling and necking can be controlled by geometrical and mechanical properties of the passive elastic layers. Relevant applications include soft robotics and mechanical actuators.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
