航空薄壁结构在噪声载荷作用下振动响应研究

研究薄壁结构在声载荷激励下的随机振动响应问题是进行结构声疲劳估算和设计的基础。从此问题出发,综述了国内外在结构声疲劳方面的研究情况,并对有关模态分析法、数值积分法、统计能量分析(SEA)法及有限元素法等研究方法进行了总结和评价,得到了各方法在计算薄壁结构受声激励时振动响应的各自应用范围。同时也指出了薄壁结构在声载荷作用下振动响应研究所面临的困难。

Research on vibration response of aeronautical thin-wall structure excited by acoustic loads

The study on dynamic response of thin-wall structure excited by acoustic loads is the basis to evaluate and design the structure sonic fatigue.Based on this,the research works on the dynamic response of thin-wall structure excited by acoustic loads and the sonic fatigue at home and abroad presented,and corresponding study methods such as the model analysis,the numerical integration,the statistical energy analysis(SEA) and the finite element method are also introduced,the applied range of these methods to calculate the dynamic response of thin wall structure excited under the acoustic loads were achieved.The research difficulties of the vibration response on thin-wall structure excited by acoustic loads are also pointed out.