The influence of systematic parameters on the structural equivalent damping ratio is analyzed for purely torsional vibration.
对结构纯扭转的振动问题进行研究，分析了控制系统各参数对控制后结构等效阻尼比的影响。
The effect of systematic parameters on the structural equivalent damping ratio in translational and torsional direction is studied for torsionally coupled vibration.
对结构扭转耦联的振动问题进行研究，分析了控制系统各参数对结构平移等效阻尼比和扭转等效阻尼比的影响。
The equivalent damping ratio and stiffness coefficient of the LED device are studied, and the general equivalent formula of energy dissipation devices is established.
研究了将铅挤压阻尼装置等效成阻尼比和刚度系数的方法，建立了消能装置的通用等效计算公式；
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