CAJ | 학술논문

参考ISO 3381-2005标准，对运营中速度等级为300 km/h的某型高速列车进行车间连接处车内噪声测试，给出了车间连接处车内噪声的频谱特性及其空间分布规律。进而，基于球谐函数声场分解和重构的球形阵列声源识别原理，采用球形阵列声源识别系统，对车间连接处车内噪声进行声源识别，明确了车间连接处车内噪声的源强和分布特性。最后，参考TB 3094-2004标准，对典型的车间连接风挡结构进行隔声特性测试。综合上述测试结果，对车间连接处噪声的产生机理进行了综合的分析。结果表明，现有高速列车风挡结构不单有隔声不足的问题，还存在较显著的结构振动声辐射，对风挡结构的优化设计需同时考虑上述两大因素。
삼고ISO 3381-2005표준，대운영중속도등급위300 km/h적모형고속열차진행차간련접처차내조성측시，급출료차간련접처차내조성적빈보특성급기공간분포규률。진이，기우구해함수성장분해화중구적구형진렬성원식별원리，채용구형진렬성원식별계통，대차간련접처차내조성진행성원식별，명학료차간련접처차내조성적원강화분포특성。최후，삼고TB 3094-2004표준，대전형적차간련접풍당결구진행격성특성측시。종합상술측시결과，대차간련접처조성적산생궤리진행료종합적분석。결과표명，현유고속열차풍당결구불단유격성불족적문제，환존재교현저적결구진동성복사，대풍당결구적우화설계수동시고필상술량대인소。
According to the standard ISO 3381-2005, the interior noise of the gangway in a certain type of high-speed trains at 300 km/h speed level is tested. The spectral characteristics and the spatial distribution of the interior noise are ob-tained. Furthermore, based on the theory of spherical harmonic decomposition and reconstruction, a spherical array sound source recognition system is employed to recognize the sound sources of the interior noise at the gangway. Then the intensity and distribution characteristics of the interior noise are obtained. Finally, according to the standard TB 3094-2004, the sound insulation characteristic of the windshield structure of a typical gangway is tested. According to the test results, the mecha-nism of the interior noise of the gangway is analyzed comprehensively. It is shown that the existing windshield structures have not only the deficiencies in sound insulation, but also the significant noise radiation due to the structural vibration. So, the two shortcomings should be considered in design and optimization of the windshield structures.