Rapid multi-physics simulation for electro-thermal origami systems
Rapid multi-physics simulation for electro-thermal origami systems
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DOI：
10.1016/j.ijmecsci.2021.106537
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发表时间：
2021-02
影响因子：
7.3
通讯作者：
Yi Zhu;E. Filipov
中科院分区：
文献类型：
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作者：
Yi Zhu;E. Filipov
电热驱动折纸提供了一种创建具有先进变形和功能能力的 3D 系统的新颖方法。然而，目前很难模拟此类系统的多物理行为，因为电热驱动和大折叠变形是高度相互依赖的。在这项工作中，我们介绍了一种用于电热驱动折纸系统的快速多物理场模拟框架，该框架可以同时捕获：热机械耦合驱动、面板间接触、传热、大变形折叠以及施加到折纸上的其他复杂载荷。与有限元模型的比较验证了所提出的用于模拟不同系统几何形状、材料和周围环境的折纸传热的框架。针对物理电热微折纸的模拟折叠行为的验证进一步证明了所提出模型的有效性。提供了更复杂的折纸图案的模拟和折纸优化的案例研究作为应用示例，以展示模型的功能和效率。该框架为主动折纸系统的分析、设计、控制和优化提供了一种新颖的仿真工具，突破了可行的形状变形和功能能力的界限。
Electro-thermally actuated origami provides a novel method for creating 3-D systems with advanced morphing and functional capabilities. However, it is currently difficult to simulate the multi-physical behavior of such systems because the electro-thermal actuation and large folding deformations are highly interdependent. In this work, we introduce a rapid multi-physics simulation framework for electro-thermally actuated origami systems that can simultaneously capture: thermo-mechancially coupled actuation, inter panel contact, heat transfer, large deformation folding, and other complex loading applied onto the origami. Comparisons with finite element models validate the proposed framework for simulating origami heat transfer with different system geometries, materials, and surrounding environments. Verification of the simulated folding behaviors against physical electro-thermal micro-origami further demonstrates the validity of the proposed model. Simulations of more complex origami patterns and a case study for origami optimization are provided as application examples to show the capability and efficiency of the model. The framework provides a novel simulation tool for analysis, design, control, and optimization of active origami systems, pushing the boundary for feasible shape morphing and functional capability.