Inter-Modal Couplings between Two Sea Subsystems with an Arbitrary Interface
A simple technique is introduced to estimate the inter-modal coupling relations of two Statistical Energy Analysis (SEA) subsystems connected via an arbitrary interface. Based on a subsystem modal approach, the dynamic stiffness matrix of a generic built-up system is derived analytically. The coupling stiffness terms between any pair of subsystem modes can then be determined in explicit expressions. Under the proper SEA conditions, e.g.-each subsystem has a high modal density and the couplings between SEA subsystems are sufficiently weak, these inter-modal coupling stiffness expressions can be greatly simplified. The results can then be easily accommodated within the standard SEA modeling procedure to predict the SEA response of generic built-up systems in a simple manner. Theoretical applications are made to estimate the SEA coupling loss factors between two subsystems connected by two rigid points.
Subsystem modal analysis dynamic stiffness matrix weak coupling Statistical EnergyAnalysis (SEA) coupling loss factor
Jl Lin HUANG Zhenyu
School of Mechanical Engineering, Shandong University, China School of Electronic, Information and Electrical Engineering, Shanghai Jiao Tong University, China
国际会议
合肥
英文
824-828
2011-09-23（万方平台首次上网日期，不代表论文的发表时间）