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力学中有一类现象,当物体的某一物理量满足一定条件时,无论施以多大的力都不可能让它与另一个物体之间发生相对运动,物理上称这种现象为“自锁现象”.也即两个相互接触的粗糙物体,由于外界作用而有相对运动趋势时,将产生反抗相对运动的静摩擦力作用.在通常情况下,当驱动力超过某一临界值时,物体间将发生相对滑动,变静摩擦力为滑动摩擦力.然而在某些条件下,即使驱动
There is a kind of phenomenon in mechanics. When a certain physical quantity of an object satisfies a certain condition, it is impossible to make relative movement between it and another object, no matter how much force is exerted. Physically, this phenomenon is called “self-locking phenomenon ”That is, two rough objects in contact with each other, due to the role of the outside world and have a relative movement trend, will have to resist the relative movement of the static friction effect.Under normal circumstances, when the driving force exceeds a certain threshold, the object Will occur relative sliding, variable friction for the sliding friction force However, under certain conditions, even if the drive