A good sound environment is essential in creating a harmonious and peaceful campus,improving students’learning outcomes,promoting physical and mental health,and creating a green and healthy campus.This study investig...A good sound environment is essential in creating a harmonious and peaceful campus,improving students’learning outcomes,promoting physical and mental health,and creating a green and healthy campus.This study investigated the impact of new buildings on existing ones by optimizing the spacing between new buildings and the sound insulation structure of building enclosures.The results indicated that building 4 was affected by the noise from new building 1 and its surroundings,with a maximum outdoor daytime noise level reaching 69 dB,and the indoor background noise level in the least favorable classroom was 43.73 dB,less than 45 dB,which was within the acceptable range.It is recommended that the sound insulation design be improved in the planning of new teaching buildings.Besides,the surrounding traffic conditions should be improved,and the usage time of sports facilities should be scheduled appropriately to prevent the noise from sporting activities from affecting the classroom activities.The findings of this study provide valuable references for future architectural acoustics design and campus planning,contributing to the creation of peaceful and comfortable campus environments.展开更多
Based on the coupled boundary element method-finite element method(BEM-FEM)method and the acoustic transfer vector(ATV)technology,BEM/FEM model is proposed for a V-type eight cylinders engine acoustic radiation simula...Based on the coupled boundary element method-finite element method(BEM-FEM)method and the acoustic transfer vector(ATV)technology,BEM/FEM model is proposed for a V-type eight cylinders engine acoustic radiation simulating analysis under semi-anechoic condition.Acoustic radiation power,field points sound pressure level and panel contributions are calculated by acoustic radiation response analysis.Additionally,based on the engine acoustic performance,different acoustic behaviors of engine are studied by changing engine materials,oil pan structures as well as geometry parameters.The acoustic performance of this engine is predicted and the influence of material,structural and geometry parameters on engine radiated noise are generalized.The principle will guide the design and optimization of the engine prototype in further work.展开更多
基金Education Research and Reform Projects of Shenzhen Polytechnic University,China(Project No.7022310092)2022 Green Building Design Golden Course Construction Project of Shenzhen Polytechnic University,China+3 种基金2023 Guangdong Provincial Education and Teaching Reform Research and Practice Project,China2021 College Student Innovation Project of Shenzhen Polytechnic University,China(Project No.P-20210607-39632)2023 Education and Teaching Reform Project of the Higher Vocational Civil Engineering and Water Resources Instruction Committee of Guangdong Province,China(Project No.2023TJSL21)The Class II Brand Specialty Construction of the Guangdong Province,China(Project No.9004-02200202)。
文摘A good sound environment is essential in creating a harmonious and peaceful campus,improving students’learning outcomes,promoting physical and mental health,and creating a green and healthy campus.This study investigated the impact of new buildings on existing ones by optimizing the spacing between new buildings and the sound insulation structure of building enclosures.The results indicated that building 4 was affected by the noise from new building 1 and its surroundings,with a maximum outdoor daytime noise level reaching 69 dB,and the indoor background noise level in the least favorable classroom was 43.73 dB,less than 45 dB,which was within the acceptable range.It is recommended that the sound insulation design be improved in the planning of new teaching buildings.Besides,the surrounding traffic conditions should be improved,and the usage time of sports facilities should be scheduled appropriately to prevent the noise from sporting activities from affecting the classroom activities.The findings of this study provide valuable references for future architectural acoustics design and campus planning,contributing to the creation of peaceful and comfortable campus environments.
基金Supported by the Ministry level advanced research project(40402040108)
文摘Based on the coupled boundary element method-finite element method(BEM-FEM)method and the acoustic transfer vector(ATV)technology,BEM/FEM model is proposed for a V-type eight cylinders engine acoustic radiation simulating analysis under semi-anechoic condition.Acoustic radiation power,field points sound pressure level and panel contributions are calculated by acoustic radiation response analysis.Additionally,based on the engine acoustic performance,different acoustic behaviors of engine are studied by changing engine materials,oil pan structures as well as geometry parameters.The acoustic performance of this engine is predicted and the influence of material,structural and geometry parameters on engine radiated noise are generalized.The principle will guide the design and optimization of the engine prototype in further work.
