CAJ | 학술논문

应用有限元方法研究飞行器典型部件（整流罩）在强噪声载荷下的结构响应及舱内噪声分布规律。选用平板对噪声的传递损失计算算例作为验证算例，在中低频段，计算结果与文献的试验结果对比较好，验证了有限元方法研究中低频飞行器声载荷响应问题的可靠性。通过有限元方法研究飞行器整流罩在强噪声载荷下的频域响应及整流罩内部的噪声分布规律，为飞行器的结构设计及仪器舱消声设计提供参考依据。
응용유한원방법연구비행기전형부건（정류조）재강조성재하하적결구향응급창내조성분포규률。선용평판대조성적전체손실계산산례작위험증산례，재중저빈단，계산결과여문헌적시험결과대비교호，험증료유한원방법연구중저빈비행기성재하향응문제적가고성。통과유한원방법연구비행기정류조재강조성재하하적빈역향응급정류조내부적조성분포규률，위비행기적결구설계급의기창소성설계제공삼고의거。
Finite element method (FEM) is applied to study both the structure response of typical component (shroud) and the cabin noise inside a space vehicle under strong acoustic load. The calculation of panel structure response to acoustic load is the strong validation for finite element method. The results of FEM agree well with the results of the referrence literature in the middle and low frequency, which proves that FEM is credible for study of structure response to acoustic load in the middle and low frequency. Structure response and cabin noise of space vehicle under severe acoustic load are studied with FEM, which gives good support to both structure design of the vehicle and noise elimination design of the instrument cabin.