摘要
传统的统计能量分析(SEA)理论不能解决非保守耦合系统和保守或非保守耦合系统在相关输入时的能量分析问题。作为任意输入关系下非保守耦合系统统计能量分析的基础,本文研究了耦合振子在非保守耦合及任意输入条件下能量分布与功率流的一般特征,推导了功率平衡方程式及各有关功率项的计算式,讨论了振子间功率流的构成及各向功率流之间的关系。研究结果表明,耦合阻尼和输入形式对耦合振子能量平衡和功率总体特征有着显著的影响。
Statistical Energy Analysis (SEA) could hardly deal with dynamical problems of non—conservatively coupled systems and that of systems under correlative excitations. As a foundation of Statistical Energy Analysis of non—conservatively coupled systems under general power input, in this paper, general characteristics of power flow and energy distribution between non—conservatively coupled oscillators under general excitations are studied. Equations for power balance and for each power item calculation are developed, and compositions of the power flows and the relationships between them are discussed, too. Results show that coupling damping and exciting types have much effect on the characteristics of power flow and energy distribution between coupled oscillators.
出处
《应用力学学报》
CAS
CSCD
北大核心
1991年第1期27-32,128,共6页
Chinese Journal of Applied Mechanics
关键词
耦合
振子
能量分布
功率流
random vibration, coupling, energy distribution, oscillator model.
