物理学报Issue(6)：280-288,9.DOI:10.7498/aps.62.064301
含玻璃微球的黏弹性复合材料覆盖层的水下吸声性能分析
Analysis of underwater sound absorption of visco-elastic composites coating containing micro-spherical glass shell
摘要
Abstract
Underwater sound absorption coating is significant to the stealth of a submarine, so it attracts a lot of attention. Underwater sound absorption of visco-elastic composites coating containing micro-spherical glass shell was investigated theoretically. The mechanical and acoustic properties of the composites in response to the volume of the micro-spherical glass shell were analyzed by the effective parameters method. Sound absorption of a single layer composites coating containing different volume of micro-spherical glass shell was calculated by the one-dimensional model, in which sound propagates in multi-layer media. The calculated results show that the sound absorption at low frequencies can be promoted by increasing the volume of micro-spherical glass shell, but the sound absorption at high frequencies is depressed. The volume distribution of the micro-spherical glass shells across the thickness of the coating was optimized by the genetic algorithm. The optimal multi-layer structure can promote the sound absorption at low frequencies, and keep the sound absorption coefficients above a limited value (0.7) at high frequencies. The optimal multi-layer composite coating can work at high pressure since it does not contain hollow macro-structure. Its structure is simple, so the technique of its fabrication should not be complicated. The theoretical method achieved in this paper can be applied in the design of underwater sound absorption coating.关键词
水下吸声/黏弹性复合材料/玻璃微球/遗传算法Key words
underwater sound absorption/visco-elastic composites/micro-spherical glass shell/genetic algorithm引用本文复制引用
于利刚,李朝晖†,王仁乾,马黎黎..含玻璃微球的黏弹性复合材料覆盖层的水下吸声性能分析[J].物理学报,2013,(6):280-288,9.基金项目
国家安全重大基础项目(批准号:613110020101)和国家自然科学基金(批准号:11274252)资助的课题 （批准号:613110020101）
