文章摘要
罗志辉,黄锋.舱室次声环境治理的模拟研究[J].声学技术,2014,33(3):255~259
舱室次声环境治理的模拟研究
Simulation experimental study on improving infrasound field inside a cabin
投稿时间:2014-02-27  修订日期:2014-05-27
DOI:10.3969/j.issn1000-3630.2014.03.014
中文关键词: 舱室  噪声控制  次声
英文关键词: cabin  noise control  infrasound
基金项目:
作者单位E-mail
罗志辉 海军医学研究所, 上海 200433 44881484@qq.com 
黄锋 海军医学研究所, 上海 200433  
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中文摘要:
      某装具在运行时产生的次声及低频声对作业人员生理、心理产生较大影响。在对该装具运行状态进行详细的声检测和数据分析的基础上,并考虑到其产生的次声及低频声对作业人员的生理、心理变化特征,提出相应的声场改善方案。从分析“原位共振法”在理论解析与工艺实施上的弊端,以及实验与实际环境明显差异出发,提出次声及低频声环境治理的一系列方案,并由此筛选出隔振法进行试验。开展了隔声箱内壁有无吸声材料、试验舱隔振浮筑以及试验舱有无吸声等不同工况下的隔声与隔振性能的对比试验,试验结果证明,隔振法在20~40 Hz频段范围达到15~20 dB降噪效果,获得了比较满意的治理效果。
英文摘要:
      The infrasound generated from certain equipment has great physical and psychological influence on operating personnel. Through a detailed acoustic measurement and systematical data analysis, and by taking into account physical and psychological characteristics of the infrasound, an infrasound field improvement method is proposed. The proposed method is based on analyzing the theoretical defects of the "common position resonance method" which also leads to great discrepancy between experimental and actual states. The comparative experiments of insulation sound are carried out in different conditions, such as with and without sound absorption inside sound insulation cabin, float mounting of test cabinet, with and without sound absorption inside test cabinet. Testing parameters include sound level and acceleration. Experimental results show that the proposed sound insulation method achieves a 15~20dB noise reduction in frequency band from 20 to 40Hz, which meets well with the anticipated.
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