Identification of dynamic natural frequencies and viscosity damping coefficient for a large-scale structure in practical working condition is a very difficult problem.
大型构件在实际工作环境中的系统动态固有频率和粘性阻尼系数辨识一直是一个“棘手”的问题。
2
This report is intended to introduce the structure and working principle of spiral gas anchor and explain the calculation formulae for separation coefficient.
本文介绍了螺旋气锚的结构形式、工作原理及分离系数的计算公式，论述了影响分离系数的各种因素。
3
Experimental testing is used to measure the dynamic frictional coefficient of the brake-tile on the working condition of simulated promotion.