CAJ | 학술논문

机械系统中激励源传出的波将沿传输路径衰减，并会经由含源子系统边界传递出去，因而只有输入功率的残余部分以混响场的形式消耗在该子系统内。为提高应用统计能量分析法（SEA）计算振动噪声的精度，对上述过程进行深入分析，并以一个简单梁系为例，给出传入该梁系的输入功率的表达式。分析结果表明，传输波对计算结果的影响随着损耗因子的增加而增加。同时，分析将传输波的影响计入诸如舰船这种复杂空间结构的实际可行性。估算结果表明，仅对含源子结构考虑传输波的影响是充分可行的。
궤계계통중격려원전출적파장연전수로경쇠감，병회경유함원자계통변계전체출거，인이지유수입공솔적잔여부분이혼향장적형식소모재해자계통내。위제고응용통계능량분석법（SEA）계산진동조성적정도，대상술과정진행심입분석，병이일개간단량계위례，급출전입해량계적수입공솔적표체식。분석결과표명，전수파대계산결과적영향수착손모인자적증가이증가。동시，분석장전수파적영향계입제여함선저충복잡공간결구적실제가행성。고산결과표명，부대함원자결구고필전수파적영향시충분가행적。
Waves,propagating from sources in mechanical systems,dissipate on the way of propagation and transmit via obstacles--boundaries of subsystem with source. Only the residuary part of input power consumes on formation of reverberant field in subsystem. Such processes are taken into account for improve-ment of computing vibration and noise using Statistical Energy Analysis(SEA). Expressions for input pow-er,injected into simple beams system,are presented as an example. It is shown that influence of propagat-ing waves on calculating results increases when loss factor increases. Practical possibility to take propagat-ing waves into account for complex spatial systems like ships is considered. Estimations show that it is suffi-cient to consider propagating waves only in subsystems with sources.