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arXiv 1508.03099cond-mat.mtrl-sci
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仿生尺度啮合中的摩擦效应

Frictional Effects in Biomimetic Scales Engagement

Ranajay Ghosh, Hamid Ebrahimi, Ashkan Vaziri

摘要:

鳞片啮合对具有刚性仿生鳞片的弹性基底的非线性弯曲行为有重要贡献。在这封信中,我们调查的作用,摩擦调制的非线性,由于自接触的规模通过分析调查。我们的模型之间的摩擦干库仑型摩擦刚性链接和基板被视为线弹性。结果表明,摩擦效应导致两种可能的锁定机制,即静摩擦锁定和动摩擦锁定。这些锁由于界面行为和几何形状的组合而出现。除了这些极端情况外,还发现摩擦行为会增加结构的刚度。摩擦的这种双重性质既影响系统的运行,又影响其终端极限,导致最大相对摩擦功位于中间摩擦系数处,而不是摩擦极限的极端处。

英文摘要:

Scales engagement can contribute significantly to nonlinear bending behavior of elastic substrates with rigid biomimetic scales. In this letter, we investigate the role of friction in modulating the nonlinearity that arises due to self-contact of scales through an analytical investigation. We model the friction as dry Coulomb type friction between rigid links and the substrate is taken to be linear elastic. Our results reveal that frictional effects give rise to two possible locking mechanisms, namely static friction lock and kinetic friction lock. These locks arise due to a combination of interfacial behavior and geometry. In addition to these extremes, the frictional behavior is found to increase stiffness of the structure. This dual nature of friction which influences both system operation and its terminal limit results in the maximum relative frictional work to lie at intermediate friction coefficients and not at the extremes of frictional limits.

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。

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