【摘要】 结构在中、低频段的振动功率流计算大多采用导纳法,而复杂结构的导纳采用解析方法不易求得。给出了基于结构有限元动响应分析的振动功率流计算方法,采用该方法推导了一典型浮筏隔振系统的传递功率流表达式,编程计算对比了2种隔振方案(橡胶方案、气囊方案)的传递功率流和隔振效果。该方法对此类复杂浮筏隔振系统的设计有一定的指导作用。更多还原

【Abstract】 Currently most analysis methods of power flow at low and intermediate frequencies are ground on the structure mobility,but complex structure’s analytical mobility is unavailable.A method of calculating the power flow in structures based on finite element analysis was adopted in this paper.Based on this method,the expressions of the power flow transmission of a floating raft isolating system is presented.And the power flow behaviors and isolation effects of its two isolation schemes are detailed discussed.This method can be further used for this kind of complex floating raft systems design.更多还原