论文标题
快照的力学
Mechanics of a snap-fit
论文作者
论文摘要
快照是工业产品中多功能的机械设计，它可以重复组装和拆卸两个固体零件。这一重要特性归因于几何，摩擦和弯曲弹性之间的良好平衡。在本研究中，我们将理论，仿真和实验结合在一起，以揭示SNAP拟合功能的基本物理原理，该功能是由刚性圆柱体和薄弹性壳组成的最简单的设置。我们使用几何参数构建相图并确定四个不同的机械阶段。我们基于线性弹性理论与静态摩擦定律相结合并合理化数值和实验结果的分析预测。该研究揭示了快速拟合的操作不对称性（即易于组装但难以拆卸）是如何从几何形状，弹性和摩擦的精美组合中出现的，并提出了对多种机械设计的可调功能的优化。
Snap-fits are versatile mechanical designs in industrial products, which enable the repeated assembling and disassembling of two solid parts. This important property is attributed to a fine balance between geometry, friction, and bending elasticity. In the present study, we combine theory, simulation, and experiment to reveal the fundamental physical principles of snap-fit functions in the simplest possible setup consisting of a rigid cylinder and a thin elastic shell. We construct a phase diagram using geometric parameters and identify four distinct mechanical phases. We develop analytical predictions based on the linear elasticity theory combined with the law of static friction and rationalize the numerical and experimental results. The study reveals how an operational asymmetry of snap-fits (i.e., easy to assemble but difficult to disassemble) emerges from an exquisite combination of geometry, elasticity, and friction and suggests optimization of the tunable functionalities for a range of mechanical designs.
