约束滑动层的非线性滞回特性
Nonlinear hysteretic behavior of a confined sliding layer
摘要：
一个非线性模型表示的薄固体润滑层之间的两个滑动周期性表面的摩擦学问题是用来分析的现象，在钉扎/脱钉周围的运动状态，而不是周围的静态钉扎状态的滞后。外部驱动力F_ext的循环被用作一种简单的手段来破坏，然后恢复先前发现的润滑剂质心速度的动态钉扎状态。去钉扎到准自由滑动状态的过程可以直接发生，也可以通过一个跳跃，或者通过一系列不连续的转变。中间滑动步骤让人想起锁相状态和粘滑运动在静摩擦，并可以解释在外观的旅行密度缺陷，否则规则排列的扭结。再钉扎通过不同行进缺陷的相继消失而更平稳地发生。所得到的双稳态和多稳态区域也可以通过改变除F_ext之外的机械参数来探索，例如滑动器的滑动速度或滑动幅度。
英文摘要：
A nonlinear model representing the tribological problem of a thin solid lubricant layer between two sliding periodic surfaces is used to analyze the phenomenon of hysteresis at pinning/depinning around a moving state rather than around a statically pinned state. The cycling of an external driving force F_ext is used as a simple means to destroy and then to recover the dynamically pinned state previously discovered for the lubricant center-of-mass velocity. De-pinning to a quasi-freely sliding state occurs either directly, with a single jump, or through a sequence of discontinuous transitions. The intermediate sliding steps are reminiscent of phase-locked states and stick-slip motion in static friction, and can be interpreted in terms of the appearance of travelling density defects in an otherwise regular arrangement of kinks. Re-pinning occurs more smoothly, through the successive disappearance of different travelling defects. The resulting bistability and multistability regions may also be explored by varying mechanical parameters other than F_ext, e.g. the sliding velocity or the corrugation amplitude of the sliders.
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。
