Noise & Health最新文献_第9页

Light rail wheel/rail noise radiation model using a coupled FE-BE method 基于FE-BE耦合方法的轻轨轮轨噪声辐射模型

IF 0.7 4区医学

Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0137

C. Layman, J. Nelson

引用次数: 0

Prediction of sound radiation using reconstructed acoustic free velocity sources 利用重建声自由速度源预测声辐射

IF 0.7 4区医学

Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0057

Xin Yan, D. Herrin

引用次数: 0

Evaluation and mitigation of outdoor live music 户外现场音乐的评估和缓解

IF 0.7 4区医学

Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0078

H. Singleton

引用次数: 0

Tradeoff between mass sensitivity and performance in quasi-zero stiffness vibration isolators 准零刚度隔振器质量灵敏度与性能的权衡

IF 0.7 4区医学

Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0139

P. Gilmore, U. Gandhi, S. M. S. Shaihan, R. Rangarajan

引用次数: 0

Validation of utility and transportation noise modeling 验证公用事业和交通噪音模型

IF 0.7 4区医学

Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0028

M. Conaway, Joseph A. Keefe

引用次数: 0

Towards high-quality X-59 sonic thump measurements 迈向高品质的X-59音波测量

IF 0.7 4区医学

Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0144

Mark C. Anderson, K. Gee, J. Durrant, A. Loubeau

引用次数: 0

Vibration Isolation with Spring Supported Concrete Floating Floors on Fitness Centers 健身中心弹簧支撑混凝土浮动楼板隔振

IF 0.7 4区医学

Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0090

Omer F. Tigli, M. Royvaran

{"title":"Vibration Isolation with Spring Supported Concrete Floating Floors on Fitness Centers","authors":"Omer F. Tigli, M. Royvaran","doi":"10.3397/nc_2023_0090","DOIUrl":"https://doi.org/10.3397/nc_2023_0090","url":null,"abstract":"Spring-supported concrete floating floors are often used as a high-end solution to mitigate noise and vibration disturbances in fitness centers. Suppliers of these floors typically provide impressive sound test results, but information regarding their low-frequency vibration isolation\u0000 capabilities is scarce. In this study, the authors collected in-situ vibration data from an existing fitness center equipped with a 4-in (102-mm) thick spring-supported concrete floating floor while conducting various activities such as running on a treadmill, dropping a dumbbell, putting\u0000 down a barbell and slamming a medicine ball on the floor. Frequency measurements revealed that entrapped air led to an increase in the natural frequency of the floating floor. The data demonstrated that floating slab effectively isolated noise and high-frequency vibrations, but was not able\u0000 to isolate low-frequency vibrations. Additionally, a finite element model of the structure was developed, incorporating the floating floor and the base structural slab. The model was used to simulate treadmill running and weight drops, and calculated vibration levels were presented as heat\u0000 maps across the entire floor. The model's predictions aligned closely with the actual measurements, demonstrating that vibration analysis based on finite element models is a valuable method to design effective mitigation strategies for fitness centers.","PeriodicalId":19195,"journal":{"name":"Noise & Health","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85404375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Air vent shape optimization with metamaterials. 利用超材料优化通风口形状。

IF 0.7 4区医学

Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0111

Marco Lizotte, R. Panneton, J. Piaud

{"title":"Air vent shape optimization with metamaterials.","authors":"Marco Lizotte, R. Panneton, J. Piaud","doi":"10.3397/nc_2023_0111","DOIUrl":"https://doi.org/10.3397/nc_2023_0111","url":null,"abstract":"Heating, Ventilation and Air Conditioning (HVAC), are crucial in every building for the well being of the occupants. While these equipments take care of the air quality with exhausting polluted air out and bringing fresh air in, they can let a polluant in: noise. Noise can have non-physical\u0000 effects like disturbed sleep, cognitive problems or even influences on heart diseases. Recent developments in the acoustic field shown the use of metamaterials that can reduce noise while keeping good ventilation. The sonic crystals, disposed in a certain pattern following the Bragg's law,\u0000 can be tuned to reduce noise on a wide frequency band. The design of an air vent, known as a metacage, was made by using open source numerical simulations. Based on a numerical plan and optimization methods, this study's goal was to find the optimal solution for the HVAC to reduce noise while\u0000 minimizing ventilation loss. Following the simulations results, the metacage generated was 3D printed for validation in the laboratory, showing the corroboration with the simulations. The final results show third-octave bands with a TL peak over 10dB and an average of 3dB for all the others\u0000 bands up to 10kHz. All this while keeping minimal ventilation loss.","PeriodicalId":19195,"journal":{"name":"Noise & Health","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82095622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Frequency reduction and attenuation of the tire air cavity mode due to a porous lining 由于多孔衬里，轮胎气腔模式的频率降低和衰减

IF 0.7 4区医学

Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0012

K. Choo, Wonhong Choi, Guochenhao Song, J. Bolton

{"title":"Frequency reduction and attenuation of the tire air cavity mode due to a porous lining","authors":"K. Choo, Wonhong Choi, Guochenhao Song, J. Bolton","doi":"10.3397/nc_2023_0012","DOIUrl":"https://doi.org/10.3397/nc_2023_0012","url":null,"abstract":"The tire air cavity mode is known to be a significant source of vehicle structure-borne road noise near 200 Hz. A porous lining placed on the inner surface of a tire is an effective countermeasure to attenuate that resonance. The two noticeable effects of such a lining are the sound\u0000 pressure attenuation and the frequency reduction of the air cavity mode. In this paper, through both analytical and numerical methods, the mechanism of the effects of porous lining was studied. A two-dimensional duct-shaped analytical model and a tire-shaped numerical model were built to investigate\u0000 the lined tire in conjunction with the Johnson-Champoux-Allard model describing the visco-inertial dissipative effects of the porous material. Design parameters of the porous lining were controlled to study their impact and optimal ranges of the design parameters were suggested. Finally, in\u0000 experimental analysis, the sound attenuation and the frequency drop were observed in measurements of force, acceleration, and sound pressure. In conclusion, it was demonstrated that the suggested analytical and numerical models successfully predict the effect of porous lining and that the\u0000 frequency reduction results from the decreased sound speed within the tire owing to the presence of the liner.","PeriodicalId":19195,"journal":{"name":"Noise & Health","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82259094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sound attenuation by acoustic metamaterials applied to kitchen hoods 应用于厨房通风柜的声学超材料的声音衰减

IF 0.7 4区医学

Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0044

Jeremy Plé, Tenon Charly Kone, Alla Eddine Benchikh Lehocine, R. Panneton

{"title":"Sound attenuation by acoustic metamaterials applied to kitchen hoods","authors":"Jeremy Plé, Tenon Charly Kone, Alla Eddine Benchikh Lehocine, R. Panneton","doi":"10.3397/nc_2023_0044","DOIUrl":"https://doi.org/10.3397/nc_2023_0044","url":null,"abstract":"In a society where the vast majority of people spend their time inside buildings or vehicles, the need to filter the air is essential to ensure a certain level of comfort. The integration of air exchanger systems in these enclosed spaces generates noise pollution which can deteriorate\u0000 the quality of the air. Thus, controlling the noise generated by these systems becomes a major challenge for the construction industry. Recent traditional solutions such as acoustic sonic crystals only allow high frequency noise control. One solution is the incorporation of inner structured\u0000 acoustic materials for the control of low frequency transmission. This paper proposes a coupling of sonic crystals and structural acoustic materials for the control of sound transmission at low and high frequencies. To achieve this, research and simulations of the acoustic properties of various\u0000 metamaterial models under the COMSOL software were established as well as a system of the selected solutions, using the transfer matrix method. Experimental impedance tube analyses are being carried out for varying geometries, along with a fabrication method for prototyping.","PeriodicalId":19195,"journal":{"name":"Noise & Health","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83072462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0