摘要
在半消声室内用模拟路面纹理的静音转鼓进行载重子午线轮胎远场、近场和近场声全息噪声试验,并建立了详细的数据分析方案,包含总声压级、噪声频谱、1/3倍频程、1/12倍频程、噪声色差图和瀑布图。对混合型室内噪声的数据分析发现,载重子午线轮胎近场噪声具有指向性特征,接地后端和前端噪声较大,依次向接地侧面减弱,且接地后端大于接地前端。
In the semi-anechoic room,the far-field noise,near-filed noise and near-field acoustical holography experiments for truck and bus radial tire were conducted by using silence drum with simulated road pattern. A detailed experimental scheme was built,including total sound pressure,noise spectrum,1 /3 octave bands,1 /12 octave bands,color-map and water-map. The analysis of the hybrid indoor noise showed that,the near-field noise of truck and bus radial tire had directional feature,the noise in the front end and rear end of tire ground contact area was higher,and the noise in the rear end was higher than that in the front end.
出处
《橡胶工业》
CAS
2015年第2期116-122,共7页
China Rubber Industry
基金
国家自然科学基金资助项目(51275265
51175286)
关键词
载重子午线轮胎
半消声室
近场噪声
远场噪声
近场声全息
声强
truck and bus radial tire
semi-anechoic room
near-field noise
far-field noise
near-field acoustical holography
