纵振动对声传输测量带来的干扰及其避免方法

董鹏; 陈志刚; 龚强; 芦雪松

doi:10.3969/j.issn.1673-3185.2017.01.017

纵振动对声传输测量带来的干扰及其避免方法

doi: 10.3969/j.issn.1673-3185.2017.01.017

1.
海军装备部, 北京 100071
2.
中国舰船研究设计中心, 湖北武汉 430064
3.
哈尔滨工程大学水声工程学院, 黑龙江哈尔滨 150001

详细信息

作者简介:
董鹏, 男, 1979年生, 硕士, 工程师

通信作者:
龚强(通信作者), 男, 1986年生, 硕士, 工程师

中图分类号: U661.44
计量
- 文章访问数: 192
- HTML全文浏览量: 54
- PDF下载量: 120
- 被引次数: 0
出版历程
- 收稿日期: 2016-05-22
- 网络出版日期: 2016-12-28
- 刊出日期: 2017-01-07

Effect of longitudinal vibration of fluid-filled pipe with elastic wall on sound transmission character

1.
Naval Armament Department of PLAN, Beijing 100071, China
2.
China Ship Development and Design Center, Wuhan 430064, China
3.
College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China

纵振动对声传输测量带来的干扰及其避免方法由董鹏，等创作，采用知识共享署名4.0国际许可协议进行许可。

摘要

摘要: 弹性充液管道在一端固定，另一端受到谐和力作用时自身会产生稳态纵振动。相比于管道自身模态的谐振，弹性管道稳态纵振动的幅度更大，对于声场的影响也更大。对于管道稳态纵振动的研究可以更好地说明充液管道对管口辐射声场的影响。通过等效梁模型的解析计算及与实验结果的对比，验证了等效梁模型用于计算管道稳态纵振动的正确性，同时，提出一种用于隔离管道纵振动的方法，并通过实验验证了其有效性。
- 弹性充液管道 /
- 声传输特性 /
- 稳态纵振动
Abstract: When one end of a fluid-filled pipe with an elastic wall is fixed and a harmonic force effect acts on the other end, a steady longitudinal vibration will be produced. Compared to the pipeline resonance mode, the amplitude of the steady longitudinal vibration of an elastic pipe is greater, and the effect on the sound is also greater. The study of the steady longitudinal vibration of pipes can better describe the effects of fluid-filled pipelines on the radiation sound field of the pipe opening. Through the contrast between the analysis calculation of the equivalent beam model and the experimental results, the accuracy of the equivalent beam model for the calculation of the steady longitudinal vibration of pipelines is verified, and a method of isolating the steady longitudinal vibration state is proposed and verified.
- fluid-filled pipe with elastic wall /
- sound transmission characteristics /
- steady longitudinal vibration

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图 1 弹性充液管道声传输特性测量系统

Figure 1. The system of the sound transmission characteristics measurement for the elastic pipeline filled with fluid

下载: 全尺寸图片幻灯片

图 2 刚性连接时，声源1在厚壁钢管一端，管的另一端管口在混响场中的辐射声功率

Figure 2. The radiated sound power through the pipeline when one end of the thick pipe is in reverberation field, and the other end is source 1

下载: 全尺寸图片幻灯片

图 3 f < 15 kHz时厚壁钢管的声传输特性(声源1)

Figure 3. The sound transmission characteristics for elastic pipe with thick wall when f < 15 kHz (source 1)

下载: 全尺寸图片幻灯片

图 4 厚壁钢管谐振频率与测量值的误差

Figure 4. The deviation of the resonance frequency and measuring value in thick wall pipe

下载: 全尺寸图片幻灯片

图 5 刚性连接时，声源2在厚壁钢管一端，管的另一端管口在混响场中的辐射声功率

Figure 5. The radiated sound power through the pipeline when one end of the thick pipe is in reverberation field, and the other end is source 2

下载: 全尺寸图片幻灯片

图 6 f < 15 kHz时厚壁钢管的声传输特性(声源2)

Figure 6. The sound transmission characteristics for elastic pipe with thick wall when f < 15 kHz (source 2)

下载: 全尺寸图片幻灯片

图 7 厚壁钢管谐振频率与测量值的误差(声源2)

Figure 7. The deviation of the resonance frequency and measuring value in thick wall pipe (source 2)

下载: 全尺寸图片幻灯片

图 8 管道与混响箱的连接方式

Figure 8. The attended mode between the pipeline and the reverberation tank

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图 9 软连接方式下声源在厚壁管一端，管的另一端管口在混响场中的辐射声功率

Figure 9. By soft connecting way, the radiated sound power through the pipeline when one end of the thick pipe in reverberation field, and the other end is source

下载: 全尺寸图片幻灯片

表 1 管道截止频率的解析解和测量值

Table 1. Analytical solutions and measurement values of the pipeline cutoff frequency

	Analytical solution	Measurement value
Cutoff frequency f_n/kHz	24.0	15.0

下载: 导出CSV

表 2 厚壁钢管的谐振频率与测量值(声源1)

Table 2. The resonance frequencies and measuring values of thick wall pipeline (source 1)

	谐振频率f_z/Hz
阶数	理论值	测量值
7	3 294	3 280
9	4 308	4 176
11	5 321	5 312
14	6 842	6 704
15	7 349	7 296
16	7 856	7 808
17	8 363	8 496
19	9 376	9 552
21	10 390	10 470
23	11 404	11 220
24	11 910	11 940
25	12 417	12 300
26	12 924	12 860
27	13 431	13 680
28	13 938	14 060
29	14 445	14 370

下载: 导出CSV

表 3 厚壁钢管的谐振频率与测量值(声源2)

Table 3. The resonance frequencies and measuring values of thick wall pipeline (source 2)

	谐振频率/_z/Hz
阶数	理论值	测量值
9	4 308	4 160
15	7 349	7 080
16	7 856	7 840
18	8 869	8 616
19	9 376	9 248
20	9 883	9 752
21	10 390	10 470
23	11 404	11 550
25	12 417	12 300
26	12 924	12 810
27	13 431	13 480
28	13 938	14 130
29	14 445	14 420

下载: 导出CSV

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