保守和非保守平板－边框耦合系统的SEA参数识别

本文利用保守和非保守耦合系统的统计能量分析原理，针对平板-边框耦合系统的具体结构形式，分别建立了两子系统和五子系统SEA模型，重点研究了这两个分析模型之间的能量关系，从而使得复杂耦合系统的保守和非保守耦合损耗因子可以由与其相似的简单耦合系统推算出来。理论分析和实验研究的结果表明，平板到边框的保守耦合损耗因子为平板到梁的耦合损耗因子的4倍，非保守耦合损耗因子在计入与耦合阻尼相关的等效比例系数后也可得到相似的定量关系。理论分析结果与实验结果良好的一致性证明了本文研究方法的可行性与研究结果的可靠性。

SEA parameters evaluation of conservatively or non-conservatively coupled panel-sideframe system

Based on the principle of statistical energy analysis for conservatively or non-conservatively coupled systems,SEA models containing two subsystems and that including five ones are established for a panel-sideframe coupling structure.The research is focused on the energy relationship between the two models to make it possible that conservative or non-conservative coupling loss factors associated with a complicated coupling system can be obtained from a simple system, but similar to the complex one. Results from both the theoretical analysis and experiments show that the conservative coupling loss factor from the panel to the sideframe is 4 times that from the former to the latter one,and a similar quantitative relationship between non conservative coupling loss factors can also be obtained after into account taking the effective proportional factor,which is induced by the coupling damping.As a rational support of the study,good agreement between the two results is found.