| Study on Noise Mechanism of Truck and Bus Radial Tire by Indoor Experiment |
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| DOI： |
| Key Words: truck and bus radial tire ； semi-anechoic room ； nearfield noise ； farfield noise ； nearfield
acoustical holography ； sound intensity |
| Author Name | Affiliation | | CHEN Ya-long | State Key Laboratory of Automotive Safety and Energy， Tsinghua University | | WANG Hao | State Key Laboratory of Automotive Safety and Energy， Tsinghua University | | FENG Xi-jin | State Key Laboratory of Automotive Safety and Energy， Tsinghua University | | WEI Yin-tao | State Key Laboratory of Automotive Safety and Energy， Tsinghua University |
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| Abstract: |
| ln the semianechoic roomi the farfield noise， nearfiled 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，l/3 0ctave bands， 1/12 0ctave bands， color-map and water-map. The analysis of the hybrid indoor noise showed that，the nearfield 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. |
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