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基于FE-SEA混合法的低地板列车车内噪声预测

Prediction of Noise in Low Floor Train Carriage Based on FE-SEA Hybrid Method
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摘要 针对低地板列车车内噪声问题,采用基于声固耦合理论的FE-SEA混合法,建立低地板列车单节车噪声预测模型,分析在各激励载荷共同作用下车内噪声分布规律及各子系统对车内噪声的贡献率。结果表明:车内噪声频率主要集中在315~2000 Hz,其分布表现为“两端大、中间小”;地板子系统和车窗子系统对坐姿声腔输入功率贡献率较大,噪声频率在630 Hz左右时,地板子系统对坐姿声腔输入贡献率达58.6%;噪声频率在500~1000 Hz时,车窗子系统对坐姿声腔输入贡献率最大,达43.2%。通过对地板及车窗采取减振、增加密封性等措施,可减小低地板列车车内噪声,为后续低地板列车噪声控制提供参考依据。
作者 齐志鹏 陈江 盖磊 姚永虎 QI Zhipeng
出处 《铁路技术创新》 2019年第5期100-104,共5页 Railway Technical Innovation
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