刚度项 meaning in English

stiffne term
stiffness term

The main idea of this method is using internal stress of last moment to construct the term of dynamic stiffening caused by rotation at high speed . then the effect of dynamic stiffening can be simulated at lower cost when the equation of motion of elastic parts is linear
该方法的主要思想是利用系统部件在前一时刻的内部应力构造由于部件高速旋转产生的动力刚度项，因而能够在保持弹性部件运动方程线性的情况下，以更小的代价模拟部件的动力刚化效应。