| 朱庆,白鸿柏,路纯红.基于遗传算法的空腔结构设计参数优化研究[J].声学技术,2016,35(4):355~361 |
| 基于遗传算法的空腔结构设计参数优化研究 |
| Designing parameter optimization of cavity structure based on the genetic algorithm |
| 投稿时间：2015-12-06 修订日期：2016-03-10 |
| DOI：10.16300/j.cnki.1000-3630.2016.04.014 |
| 中文关键词: 集中质量 散射 空腔结构 遗传算法 能量密度 |
| 英文关键词: lumped mass scattering cavity structure genetic algorithm energy density |
| 基金项目:武器装备“十二五”预先研究项目 |
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| 摘要点击次数: 1051 |
| 全文下载次数: 1652 |
| 中文摘要: |
| 通过构建空腔结构理论模型，根据集中质量与薄膜之间的作用关系，得出了两个集中质量之间形成的开放型空腔结构能够使入射声波在空腔内进行散射，消耗声波能量的结论。为了获得最佳的吸声效果，采用遗传算法对空腔结构的设计参数在100～1000 Hz频域内进行优化。通过对分布在薄膜表面的集中质量进行有限元仿真分析，得出了集中质量会受声波载荷作用两两进行“拍动”的结论，拍动形式越剧烈的集中质量，其能量密度越高，在空腔结构内声波能量消耗越大。最后，通过试验验证了遗传算法对空腔结构参数设计的可行性。 |
| 英文摘要: |
| The theoretical cavity structure model is established in the article. By analyzing the relationship between lumped mass and thin membrane, the scattering and the energy loss of the incident wave occur because of the cavity structure between two lumped masses. For the purpose of achieving optimal effect of sound absorption, the genetic algorithm is used to simultaneously optimize the designing parameters of the cavity structure between 100Hz and 1000Hz. Through the FEM (Finite Element Method) analysis, it is found that ‘flapping phenomena' happen to every two lumped masses embedding on the film surface under the load of sound wave; and the stronger the lumped mass flaps, the higher its energy density is, moreover the sound wave loses more energy in the cavity structure. Finally, tests show that parameter optimization of the cavity structure based on the genetic algorithm is feasible. |
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