摘要
为了得出统计能量分析法的适用范围和成功应用的关键因素,应用模态理论对系统的输入功率和耦合损耗因子进行了研究,挖掘了统计能量分析法中“统计”的更深层次的含义.通过对统计能量分析法原理的分析,提出增大系统的特征尺寸和系统阻尼、增大分析带宽和采用宽带激励均可提高统计能量分析的精度.
In order to obtain the applicable range of statistical energy analysis （SEA） and the key factor in the application of SEA, the model theory is applied to study the input power and the coupling loss factor. The deep-seated meaning of “statistic” in SEA is analyzed in detail. The analysis results show that the large characteristic dimension, high damping broad analytical band, and irrelevant distributing exciting force can all improve the calculation precision of SEA .
出处
《海军工程大学学报》
CAS
北大核心
2005年第6期95-98,112,共5页
Journal of Naval University of Engineering
关键词
振动
统计能量法
输入功率
耦舍损耗因子
vibration
statistical energy analysis
input power
coupling loss factor
