摘要
研究利用子结构的导纳计算非保守耦合系统的耦合损耗因子的方法。首先，利用经典保守耦合系统统计能量分析能量平衡方程的形式，推导了非保守耦合系统中耦合损耗因子与结构振动能量比的关系；然后，给出了利用子结构的导纳计算结构振动能量比的方法；最后，实验测量了非保守耦合系统的耦会损耗因子，并与理论预测值比较。结果表明，理论预测和实验测量结果的一致性很好。
The method of calculating the coupling loss factors for non-conservatively coupled systems using the mobilities of substructures is studied. First, based on the form of the energy balance equations of conservatively coupled systems, the relationship between the coupling loss factors and the energy ratios in non-conservatively coupled systems is derived; Then, the method of calculating the energy ratios using the mobilities of substructures is introduced; Finally, an experiment is carried out. The predicted results agree well with the measured data.
出处
《声学学报》
EI
CSCD
北大核心
1999年第5期550-556,共7页
Acta Acustica
基金
国家自然科学基金
