金属在弹性区内加载卸载时，由于应变落后于应力，使加载线与卸载线不重合而形成一封闭回线，是为弹性滞后。封闭回线称为弹性滞后环。存在滞后环现象说明加载时消耗于金属的变形功大于卸载时金属放出的变形功，因而有一部分变形功为金属所吸收。这部分吸收的功就称为金属的内耗，其大小用回线面积度量。
通过花岗岩常幅循环加载试验，分析岩石的非线弹性滞后特性。
The nonlinear elastic hysteresis behaviour of granite is studied based on experimental results under constant amplitude cyclic loading.
应用赫芝接触理论和材料的粘弹性性质，着重研究了弹性滞后和粘着效应。
The emphasis of the modeling and analysis is laid on the elastic hysteresis and viscous shear.
对于标准线性固体，由于弹性滞后效应，虽然位移分量也随时间而增长，但它将趋于某一极限值。
For standard linear solids, because of the effects of retarded elasticity, although the displacement components will also increase with time, they will tend to their limit values.
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