文章摘要
邱燕萍,周浩萌,寻天雨,郁高坤.一种新型的水下低频共鸣器*[J].,2022,41(3):481-489
一种新型的水下低频共鸣器*
A novel underwater low-frequency resonator
投稿时间:2021-05-17  修订日期:2022-05-01
中文摘要:
      该文旨在宽开口的共鸣腔内嵌入聚氨酯泡沫来设计一种新型的水下低频共鸣器。首先通过水池实验测定聚氨酯泡沫板的声速。然后基于此建立镶嵌聚氨酯泡沫共鸣器的理论模型获得声阻抗率,通过与直口结构以及棒纵振动模型对比,验证理论模型的正确性,并建立集中参数系统,分析内嵌聚氨酯泡沫能够降低共鸣器共振频率的原因。最后通过有限元仿真软件进行计算,检验理论模型的正确性,与无聚氨酯泡沫镶嵌的共鸣器相比,镶嵌聚氨酯泡沫的共鸣器在维持较低品质因素的同时实现了共振频率大幅降低。
英文摘要:
      The purpose of this paper is to design a new type of underwater resonator, which is embedded with polyurethane foam in a tube. First, the sound velocity of the polyurethane foam is determined by a water-tank experiment. Second, a theoretical model is developed to obtain the specific acoustic impedance at the inlet of resonator, and its validity is confirmed by comparing the theoretical results in the two special conditions with the results obtained by a tube model and the longitudinal vibration model of a rod. Furtherly, a lumped-parameter model is established and the reason why the resonance frequency can be reduced by the polyurethane foam is analyzed. Finally, the finite element simulation software is used to verify the theoretical model. Compared with the resonator without polyurethane foam, the resonator embedded with polyurethane has an advantage in obtaining a lower resonance frequency with a low quality factor.
DOI:10.11684/j.issn.1000-310X.2022.03.019
中文关键词: 低频共振  聚氨酯泡沫  水下共鸣器
英文关键词: Low-frequency resonance  Polyurethane foam  Underwater resonator
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
邱燕萍 中国海洋大学 402366253@qq.com 
周浩萌 中国海洋大学 3442194349@qq.com 
寻天雨 中国海洋大学 1911481935@qq.com 
郁高坤 中国海洋大学 gkyu@ouc.edu.cn 
摘要点击次数: 168
全文下载次数: 150
查看全文   查看/发表评论  下载PDF阅读器
关闭