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| 航空薄壁结构在随机噪声载荷作用下的振动响应研究 | |
| 引用本文： | 沙云东,闻邦椿,屈伸,苏志敏.航空薄壁结构在随机噪声载荷作用下的振动响应研究[J].机械制造,2007,45(1):23-26. |
| 作者姓名： | 沙云东 闻邦椿 屈伸 苏志敏 |
| 作者单位： | 1. 东北大学,机械与自动化学院,沈阳,110006;沈阳航空工业学院,飞行器动力与能源工程学院,沈阳,110034 2. 东北大学,机械与自动化学院,沈阳,110006 3. 沈阳航空工业学院,飞行器动力与能源工程学院,沈阳,110034 |
| 摘 要： | 针对飞行器薄壁结构声疲劳问题,研究了具有多模态的薄壁板结构在声载荷作用下振动响应谱的估算方法.选取具有固支边界的金属薄壁板单元作为研究对象,引入结合受纳函数描述结构和噪声的耦合作用,建立了基于正交模态法的动态响应计算模型.以有限带宽随机噪声载荷作输入,按多模态方法计算了该结构的振动响应谱,估算了均方位移和均方应力,并对计算结果进行了讨论. |
| 关 键 词： | 声疲劳 随机噪声 动态响应 薄壁结构 航空 壁结构 随机噪声 载荷作用 振动响应 研究 Noise Random Aircraft Structure 结果 应力 均方位移 估算 计算模型 模态方法 输入 噪声载荷 有限带宽 动态响应 |
| 文章编号： | 1000-4998（2007）01-0023-04 |
| 收稿时间： | 2006-07 |
| 修稿时间： | 2006-07 |
Vibratory Response of Thin-panel Structure of Aircraft to Random Noise Loads |
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| Sha Yundong Wen Bangchun Qu Shen et al.Vibratory Response of Thin-panel Structure of Aircraft to Random Noise Loads[J].Machinery,2007,45(1):23-26. | |
| Authors: | Sha Yundong Wen Bangchun Qu Shen |
| Affiliation: | Sha Yundong Wen Bangchun Qu Shen et al |
| Abstract: | To solve the sonic fatigue problem of the thin-panel structure of aircraft, the method of estimation of the vibratory response spectrum of the multimode thin panel structure under acoustic loading is discussed. A metal thin panel unit with clamped boundary is chosen as a model and the joint acceptance function is used to describe the coupling effects between the structural vibration and the noise excitation so as to set up a model for calculation of dynamic response based on the supcrposition of orthogonal modes. With the random noise loading of a limited frequency bandwidth used as an excitation, the vibratory response spectrum is calculated. The mean square displacement and mean square stress are estimated as well. The calculated results are discussed finally. |
| Keywords: | Sonic Fatigue Random Noise Dynamic Response Thin-panel Structure |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |