| 引用本文: | 谭路,周其斗,纪刚,等.肋骨、舱壁布置形式对圆柱壳水下声振特性的影响.[J].国防科技大学学报,2018,40(5):78-87.[点击复制] |
| TAN Lu,ZHOU Qidou,JI Gang,et al.Influence of arrangement of ribs and bulkheads on vibration and sound radiation characteristics of cylindrical shell[J].Journal of National University of Defense Technology,2018,40(5):78-87[点击复制] |
|
| |
|
|
| 本文已被：浏览 6352次 下载 5465次 |
| 肋骨、舱壁布置形式对圆柱壳水下声振特性的影响 |
| 谭路, 周其斗, 纪刚, 潘雨村 |
|
(海军工程大学 舰船与海洋学院， 湖北 武汉 430033)
|
| 摘要: |
| 采用结构有限元耦合流体边界元方法对不同肋骨、舱壁布置形式的圆柱壳的流固耦合响应进行了计算。通过波数谱方法，结合柱壳规则波的声辐射效率，对不同波数成分结构波的振动与声辐射进行了量化。运用等间距与不等间距结构振动理论揭示了肋骨、舱壁布置形式对圆柱壳水下振动与声辐射特性产生影响的机理。研究发现：结构不等间距布置的圆柱壳水下振动特性整体上较优，但受壳体周向振动模式影响较大；结构不等间距布置的圆柱壳声辐射特性并不一定优于结构等间距布置的圆柱壳声辐射特性。 |
| 关键词: 圆柱壳 结构布置形式 声振特性 |
| DOI：10.11887/j.cn.201805013 |
| 投稿日期：2017-06-28 |
| 基金项目:国家部委基金资助项目(9140A14080512JB115) |
|
| Influence of arrangement of ribs and bulkheads on vibration and sound radiation characteristics of cylindrical shell |
| TAN Lu, ZHOU Qidou, JI Gang, PAN Yucun |
|
(College of Warship and Ocean, Naval University of Engineering, Wuhan 430033, China)
|
| Abstract: |
| The underwater vibration response of cylindrical shell with different ribs and bulkheads arrangement was calculated by using the finite element method and the boundary element method. By means of the wavenumber spectrum method, the vibration and sound radiation of structural waves with different wave numbers were quantized in combination with the acoustic radiation efficiency of the regular wave of a shell. Based on the vibration theory of periodic and aperiodic structure, the mechanism of influence of the ribs and bulkheads arrangement on the vibration and sound radiation characteristics of cylindrical shell was revealed. Through the study it can be found that the shell with aperiodic ribs and bulkheads has better underwater vibration characteristics, which are more affected by the circumferential vibration of shell. And the acoustic radiation characteristics of a shell with aperiodic ribs and bulkheads are not necessarily better than those of a cylindrical shell with periodic ribs and bulkheads. |
| Keywords: cylindrical shell arrangement of structure vibration and sound radiation characteristics |
|
|
