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Study on Sound Absorption Performance of Micro-Perforated Structure with Built-In Perforated Baffle 内置多孔挡板微孔结构吸声性能研究
声学与振动 Pub Date : 2022-01-01 DOI: 10.12677/ojav.2022.102002
俊星 揭
{"title":"Study on Sound Absorption Performance of Micro-Perforated Structure with Built-In Perforated Baffle","authors":"俊星 揭","doi":"10.12677/ojav.2022.102002","DOIUrl":"https://doi.org/10.12677/ojav.2022.102002","url":null,"abstract":"Micro-perforated plate structure is widely used in the field of noise reduction because of its advantages such as light weight, oxidation resistance and easy machining. In order to improve the sound absorption performance of single-layer micro-perforated plate, a perforated baffle which is vertical to the upper panel is added into the micro-perforated plate structure, and the micro-holes in the baffle plate are used to improve the noise reduction effect of the whole structure. Studies","PeriodicalId":61804,"journal":{"name":"声学与振动","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66181479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multichannel Decentralized Active Vibration Control with Loudspeaker as Inertial Actuator 以扬声器为惯性作动器的多通道分散主动振动控制
声学与振动 Pub Date : 2022-01-01 DOI: 10.12677/ojav.2022.103005
志杰 吴
{"title":"Multichannel Decentralized Active Vibration Control with Loudspeaker as Inertial Actuator","authors":"志杰 吴","doi":"10.12677/ojav.2022.103005","DOIUrl":"https://doi.org/10.12677/ojav.2022.103005","url":null,"abstract":"The loudspeaker is generally","PeriodicalId":61804,"journal":{"name":"声学与振动","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66182219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulation Research on Windscreen Noise Control Technology of High-Speed Train 高速列车挡风玻璃噪声控制技术仿真研究
声学与振动 Pub Date : 2022-01-01 DOI: 10.12677/ojav.2022.104007
承华 辛
{"title":"Simulation Research on Windscreen Noise Control Technology of High-Speed Train","authors":"承华 辛","doi":"10.12677/ojav.2022.104007","DOIUrl":"https://doi.org/10.12677/ojav.2022.104007","url":null,"abstract":"With the increasing speed of high-speed trains in recent years, the problem of aerodynamic noise is becoming more and more serious, and it is particularly important to design noise reduction for the workshop-connected windscreen, which is the main aerodynamic noise source of trains. Through real vehicle noise tests, the noise conditions inside and outside the vehicle in the windscreen area are clarified; a fluid simulation model containing the windscreen area and an acoustic simulation model between the inner and outer windscreen cavities are established, the surface dipole sound source in the windscreen area is obtained using LES large vortex simulation, and the noise reduction effect inside the inner and outer windscreen cavities is studied by simulation after adding sound-absorbing materials to the end walls.","PeriodicalId":61804,"journal":{"name":"声学与振动","volume":"98 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66181897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two-Grid Method Based on Hybrid Scheme for Plate Vibration Eigenvalue Problem 基于混合格式的两网格法求解板振动特征值问题
声学与振动 Pub Date : 2022-01-01 DOI: 10.12677/ojav.2022.104006
云飞 张
{"title":"Two-Grid Method Based on Hybrid Scheme for Plate Vibration Eigenvalue Problem","authors":"云飞 张","doi":"10.12677/ojav.2022.104006","DOIUrl":"https://doi.org/10.12677/ojav.2022.104006","url":null,"abstract":"In this paper, for plate vibration eigenvalue problem, we primarily give the two-grid discretization based on the shifted-inverse iteration of Ciarlet-Raviart mixed method. According to this scheme, the eigenvalue problem of plate vibration on h π grid can be simplified to the solution of plate vibration on H π grid and the solution of system of linear equations on h π grid. In this paper, it is proved that when","PeriodicalId":61804,"journal":{"name":"声学与振动","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66181833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prediction of the Interior Noise of the Head Car of 400 km/h High-Speed Train 400 km/h高速列车车头车厢内部噪声预测
声学与振动 Pub Date : 2022-01-01 DOI: 10.12677/ojav.2022.102004
雷鸣 宋
{"title":"Prediction of the Interior Noise of the Head Car of 400 km/h High-Speed Train","authors":"雷鸣 宋","doi":"10.12677/ojav.2022.102004","DOIUrl":"https://doi.org/10.12677/ojav.2022.102004","url":null,"abstract":"With the continuous improvement of train running speed, more attention has been paid to the ride comfort in high-speed trains. In this paper, the FE-SEA method is used to establish a model of the head car of a high-speed train. The noise results are obtained by applying 350 km/h excitation data to the model, which is compared with the test data to verify the accuracy of the model. By fitting and extrapolating the test data of sound source, the 400 km/h interior noise prediction results are obtained, which provides technical support for the design of 400 km/h high-speed train.","PeriodicalId":61804,"journal":{"name":"声学与振动","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66182207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Vibration Simulation Analysis on Aeroengine External Pipelines Based on ANSYS 基于ANSYS的航空发动机外管路振动仿真分析
声学与振动 Pub Date : 2022-01-01 DOI: 10.12677/ojav.2022.101001
云楠 滕
{"title":"Vibration Simulation Analysis on Aeroengine External Pipelines Based on ANSYS","authors":"云楠 滕","doi":"10.12677/ojav.2022.101001","DOIUrl":"https://doi.org/10.12677/ojav.2022.101001","url":null,"abstract":"The external pipelines of aeroengine were analyzed based on ANSYS Workbench. The natural frequency, mode and vibration response of straight pipes, 90","PeriodicalId":61804,"journal":{"name":"声学与振动","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66181328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Optimization Design and Analysis of Sound Absorption Performance of Multi Aperture Honeycomb Micro Perforated Structure 多孔径蜂窝微孔结构吸声性能优化设计与分析
声学与振动 Pub Date : 2021-01-01 DOI: 10.12677/ojav.2021.91003
引 熊
{"title":"Optimization Design and Analysis of Sound Absorption Performance of Multi Aperture Honeycomb Micro Perforated Structure","authors":"引 熊","doi":"10.12677/ojav.2021.91003","DOIUrl":"https://doi.org/10.12677/ojav.2021.91003","url":null,"abstract":"","PeriodicalId":61804,"journal":{"name":"声学与振动","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66180269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploration of Objective Test Method and Index of Notebook Noise Caused by Speaker Vibration 笔记本电脑扬声器振动噪声客观测试方法及指标的探索
声学与振动 Pub Date : 2021-01-01 DOI: 10.12677/ojav.2021.93012
自锋 肖
{"title":"Exploration of Objective Test Method and Index of Notebook Noise Caused by Speaker Vibration","authors":"自锋 肖","doi":"10.12677/ojav.2021.93012","DOIUrl":"https://doi.org/10.12677/ojav.2021.93012","url":null,"abstract":"","PeriodicalId":61804,"journal":{"name":"声学与振动","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66181193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimization Design of Powertrain Mounting System Parameters 动力总成悬置系统参数优化设计
声学与振动 Pub Date : 2021-01-01 DOI: 10.12677/ojav.2021.94013
月慧 张
{"title":"Optimization Design of Powertrain Mounting System Parameters","authors":"月慧 张","doi":"10.12677/ojav.2021.94013","DOIUrl":"https://doi.org/10.12677/ojav.2021.94013","url":null,"abstract":"","PeriodicalId":61804,"journal":{"name":"声学与振动","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66181513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Design of Exhaust Muffler for a Diesel Engine and the Study on Its Acoustic Performance 柴油机排气消声器的设计及其声学性能研究
声学与振动 Pub Date : 2021-01-01 DOI: 10.12677/ojav.2021.92010
一天 闫
{"title":"The Design of Exhaust Muffler for a Diesel Engine and the Study on Its Acoustic Performance","authors":"一天 闫","doi":"10.12677/ojav.2021.92010","DOIUrl":"https://doi.org/10.12677/ojav.2021.92010","url":null,"abstract":"","PeriodicalId":61804,"journal":{"name":"声学与振动","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66180957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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