摘要
统计能量分析方法(SEA,statistical energy analysis)适合于解决高频域复杂系统动力学问题,尤其是具有高模态密度的弱耦合动力学问题。采用该方法对海上石油开采的重大关键设备一浮式生产储油船(FPSO, Floating Production Storage and Offloading)上层建筑的振动声学特性进行了数值计算,建立了FPSO上层建筑统计能量分析模型。通过分析能量传递路径,对影响船舶舱室振动噪声水平的某些关键子系统的参数进行分析,并将优化处理前后的舱室声压级进行对比,从隔声、吸声等降噪措施中选择最便于实现的降噪方案。为设计能保证人员正常进行生产、生活噪声环境下的FPSO提供指导。
Statistical energy analysis （SEA） is suitable for solving complex dynamic problems in high frequency domain, especially for weakly-coupled system with high modal density. By using SEA, the numerical vibro-acoustic characters of the superstructure of floating production storage and offloading （FPSO） are presented, which is the key facility for china offshore oil-exploitation now. Via studying energy transmission path, measures to reduce noise, such as sound absorption and sound insulation, are taken. The effects due to parameler variances of certain key subsystem which will affect noise level of cabin are compared. A convenient treatment is selected which will guarantee the working and living conditions and meet the requirement of international shipping design regulations.
出处
《噪声与振动控制》
CSCD
北大核心
2005年第6期36-40,共5页
Noise and Vibration Control
基金
国家高技术研究发展(863)计划项目(编号2004AA616210)
关键词
声学
FPSO
减振降噪
统计能量法
acoustics
FPSO
vibration and noise reduction
statistical energy analysis
