统计能量分析子系统的划分被引量：1

Research on subsystem division of statistical energy analysis

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摘要应用统计能量分析（SEA）计算结构声辐射,子系统划分对计算结果产生影响。将平板和圆柱壳划分为多个子结构,考察子系统划分对计算结果的影响。计算结果表明,吻合频率以上,平板各种子系统划分方式和单块平板计算的辐射声功率差别小于0.1 dB;吻合频率以下,计算的辐射声功率随子系统划分的份数增加而增加,X2Y2划分方式和单块平板有3 dB左右的差别。圆柱壳划分为多个圆柱壳子系统,随轴向划分的增加,划分为多个圆柱壳结果的峰值向高频迁移,1.6 kHz以上频段,轴向划分为10个子圆柱壳,与单个圆柱壳差别为1.8~2.6 dB。 Subsystem division will influence the radiation power prediction of underwater structure using statistical energy analysis（SEA）.Plate and cylinder are divided into several substructures to evaluate the effect of subsystem division.In sub-plate division,the difference between sub-plate division is less than 0.1 dB above critical frequency.The calculated radiation power will increase with the number of sub-plates,the X2Y2 sub-plate division has 3 dB difference with single plate.In the sub-cylinder division,the peak value will shift to higher frequency as the number of division increases,above 1.6 kHz,a 10 sub-cylinder division in the axial direction has a difference of 1.8～2.6 dB with the single cylinder division.

作者朱正道戴江李兵

机构地区中国船舶重工集团公司第七二研究所中国船舶重工集团公司中国舰船研究院

出处《舰船科学技术》 2011年第4期69-71,81,共4页 Ship Science and Technology

关键词 SEA 子系统辐射声功率 SEA subsystem power radiation

分类号 TB529 [理学—声学]

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