期刊
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
卷 89, 期 4, 页码 -出版社
ASME
DOI: 10.1115/1.4053397
关键词
serpentine structure; mechanics-guided 3D assembly; postbuckling; analytical solution
类别
Serpentine structures have gained increasing interest due to their unique mechanical and physical properties, making them suitable for applications in stretchable electronics, mechanical sensing, and biomedical devices. This study presents a simple analytical model for accurately analyzing the postbuckling displacement and effective rigidity of serpentine structures. By tuning the geometric parameters, a wide range of amplitudes can be achieved for 3D serpentine structures, allowing for compatibility with ultra-low rigidity biological tissues.
Serpentine structures are of growing interest due to its unique mechanical and physical properties for applications in stretchable electronics, mechanical sensing, and biomedical devices. Mechanics-guided, deterministic three-dimensional (3D) assembly provides routes to form remarkable 3D structures, which in turn significantly improve its potential for applications. Therefore, an accurate postbuckling analysis is essential to the complex 3D serpentine structures with arbitrary geometry/material parameters. Here, simple, analytical expressions are obtained for the displacement and effective rigidity of serpentine structures during postbuckling. By tuning geometry parameters, the amplitude of assembled 3D serpentine structures can span a very broad range from zero to that of a straight ribbon. The analytical model can be used in design, fabrication, and application of versatile 3D serpentine structures to ensure their compatibility with the ultra-low rigidity biological tissues. A hierarchical 3D serpentine structure with ultra-low rigidity is presented to demonstrate the application of the analytical model.
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