【摘要】 采用FE-SEA混合法,建立飞机舱室内噪声预测模型,提出飞机舱室的子系统划分方法,并开展4种不同激励条件下舱内噪声中频噪声预测研究。通过仿真和实验结果的对比分析,验证FE-SEA混合法在预测舱内中频噪声方面的准确性和有效性。分析结果表明:FE-SEA混合法能够比SEA方法更有效地预测舱内中频段的噪声。更多还原

【Abstract】 Prediction and experimental verification of aircraft cabin noise modeled by the hybrid FE-SEA method is car-ried out.The method of subsystem dividing of the cabin is introduced.The cabin’s noise spectrums in mid-frequency range under 4 different excitation conditions are simulated and thereafter compared with measurement results.It is shown that the hybrid FE-SEA method based approach is more accurate than the conventional Statistical Energy Analysis(SEA)method in predicting mid-frequency noise inside the aircraft cabin.更多还原