Page 31 - 《应该声学》2022年第2期
P. 31

第 41 卷 第 2 期                                                                       Vol. 41, No. 2
             2022 年 3 月                          Journal of Applied Acoustics                    March, 2022

             ⋄ 研究报告 ⋄



                                 分布式通风消声板特性研究                                         ∗





                                   康钟绪 宋瑞祥            †   刘 强 郭建军 张慧娟



                                             (北京市劳动保护科学研究所         北京  100054)

                摘要：在隔声板结构中，分布式内嵌大量小型消声单元，在入射声波被消声单元有效衰减的同时，气流可均匀
                通过整个板结构，形成一种分布式消声板结构。利用平面波理论和修正传递矩阵法，建立消声板简化模型，并
                预测模型传递损失。加工消声板样件，实验室内测试并验证其声学及通风性能。对比隔声测试结果与预测结
                果，验证修正传递矩阵法针对该结构的准确性，同时验证消声板结构的实际效果。结果显示，该分布式消声板
                结构具有良好的声学效果，修正传递矩阵法可应用于该结构的声学性能预测以及结构设计。
                关键词：消声板；分布式通风结构；传递损失；修正传递矩阵法；隔声量
                中图法分类号: TB535.2           文献标识码: A          文章编号: 1000-310X(2022)02-0199-08
                DOI: 10.11684/j.issn.1000-310X.2022.02.004






                      Study on characteristics of distributed ventilation silencing panel



                       KANG Zhongxu SONG Ruixiang LIU Qiang GUO Jianjun ZHANG Huijuan

                                  (Beijing Municipal Institute of Labour Protection, Beijing 100054, China)

                 Abstract: A distributed silencing panel is proposed, which is formed by a sound insulation plate and a large
                 number of small silencing units evenly embedded in the plate. The air can flow through the whole silencing
                 panel evenly, while the incident sound wave is effectively attenuated by the silencing units. A simplified model
                 of silencing panel is established based on the plane wave theory and the modified transfer matrix method, and
                 the transmission loss is predicted. Samples of silencing panel are manufactured and tested in the laboratory to
                 verify their acoustic and ventilation properties. The sound insulation test is carried out in the sound insulation
                 room. The results of the sound insulation test and the prediction are compared to verify the accuracy of the
                 modified transfer matrix method for the structure, at the same time, the sound insulation performance of the
                 silencing panel is verified. The results show that the distributed silencing panel structure has good sound
                 attenuation performance, and the modified transfer matrix method can be applied to the acoustic performance
                 prediction and structure design of silencing panel.
                 Keywords: Silencing panel; Distributed ventilation structure; Transmission loss; Modified transfer matrix
                 method; Sound insulation





             2021-04-12 收稿; 2021-05-31 定稿
             北京市科研院改革发展项目 (BJAST-RD-BMILP202102), K121 创新工程: 基于听力防护设备的人耳噪声暴露测试与评估研究
             ∗
             作者简介: 康钟绪 (1980– ), 男, 河北深州人, 博士, 副研究员, 研究方向: 噪声与振动控制。
             † 通信作者 E-mail: srx@bmilp.com
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