摘要
本文运用奇异函数理论分析了由梁—梁组成的浮筏系统的减振性能,计算了由激励经减振器—筏架梁—减振器输入到基础梁的功率流,并讨论了一些重要的结构参数对功率流传递的影响.与以往的研究相比,本文在包括浮筏近场波和远场波的同时得到了封闭解析解,也省去了大量的矩阵运算,具有准确、简洁、计算量小的特点.文中的结论为工程中的隔振降噪设计提供了理论依据.
The isolating effect of beam-beam floating is analysed using singularity function theory in the paper. The power flow is calculated from the excitation point to the foundation through isolator-raft beam-isolator, and the influence of some important parameters is discussed. A functional analytical solution is obtained and much computation time is saved as compared with the conventional matrix method. The method offered is accurate, clear and easy to operate. The result provides theoretical basis for application of vibration isolation in engineering.
出处
《振动与冲击》
EI
CSCD
1997年第1期30-34,共5页
Journal of Vibration and Shock
关键词
浮筏系统
减振
降噪
格林函数
功率流
floating raft system, vibration isolation and noise reduction, green function, power flow
