三串联非保守耦合振子功率流Ⅱ: 数值分析

Power flows of three non-conservatively series coupled oscillators part Ⅱ: Numerical analysis

本文通过数值方法对三串联非保守耦合振子的直接功率流及间接功率流与振子和耦合参数的关系作了详细的研究。结果表明：间接功率流是由间接耦会根子间的共振传输引起的；当振子的参数确定时，间接功率流主要取决于耦会刚度k3和k4，而耦合阻尼c3及c4的影响较小，在强耦合情况下间接功率流是不可忽略的；但即使耦合刚度较小且根子阻尼较大，由子间接耦合振子间的共振传输引起的间接功率流仍不能忽略．

In this paper, the direct power flow and the indirect power flow between three non-conservatively series coupled oscillators, subjected to random forces, have been investigated by the numerical method. At the same time, the relationships between the power flow and the parameters of the osciIlator and coupling elements have also been derived. It is showed that the indirect power flow is caused by the resonant transmission between the indirectly coupled oscillators. Once the parameters of the oscillator elements have been settled, the indirect power flow is nlainly determined by the coupling stiffness k3 and k4, and is less influenced by coupling damping c3 and c4. The indirect power flow should not to be ignored in strong coupling collditions; Even if the coupling stiffness is relatively smaller and the coupling damping is relatively greater, the indirect power flow still couldn't be neglected, because of the resonanttranmission between the indirectly coupled oscillators.