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- The submarine structure is simplified to single or double infinite cylindrical shell stiffened with rings, bulkheads and stringers, focusing on underwater sound radiation from the single shell. 本文在研究潜艇结构在水下的总体振动和声辐射特性时,将其简化为加筋(环肋、舱壁和纵骨)单层(耐压)或双层(耐压和非耐压)无限长圆柱壳,着重研究了加筋单层壳在水下的振动与声辐射特性。
- underwater sound radiation 水下声辐射
- Urick, R.J., Principles of Underwater Sound, McGraw-Hill Companies, 1983. 刘金源,水中声学-水声系统之基本操作原理,国立编译馆,民90。
- The sparker was originally developed for fundamental studies of underwater sound propagation and of subbottom geology. 火花发生器原来是为了进行关于水下声波传播及海底地质的基础性研究而制造的。
- This paper describes the design of underwater sound projector using thinwalled piezoelectric ceramic ring. 本文叙述薄壁压电陶瓷圆管水声发射换能器的设计。
- ZHANG Guxiang,HE Zuoyong,ZHANG Bing.Near-field acoustic holography on underwater sound sources. 张德俊;夏献华;鄢锦;程建政;王群;朱念秋.;近场声全息成像方法的研究
- In this paper, the effect of disc muffler on vibration and sound radiation of worm shell is discussed. 摘要探讨了圆盘型进气消声器对蜗壳振动和声辐射的影响。
- The vibration and sound radiation behaviors of the stem of submarine with rudder and vane are studied. 摘要针对带有舵翼的水下航行器尾部结构模型,研究舵翼对水下航行器尾部的振动及声辐射的影响。
- A PVDF piezoelectric membrane is used as sensitive element for measuring the scalar pressure of the underwater sound field. 而声压通道采用PVDF压电薄膜作为敏感元件,以拾取水下声场中的标量信息。
- Later whenever saw Shui Huo hears the underwater sound, even thinks of the water, may cause sends the above symptom, therefore calls " hydrophobia ". 以后每当看到水或听到水声,甚至想到水,都可引起发上述症状,所以又称"恐水病"。
- In order to reduce sound radiation of a structure, the method of Active Structural Acoustic Control (ASAC) was developed in the 1980s. 自八十年代后期以来,为了更为有效地降低结构声辐射,人们提出了主动结构声学控制(ASAC)。
- PVDF piezoelectric membrane is used as sensitive element for measuring the scalar pressure of the underwater sound field. 而声压通道采用PVDF压电薄膜作为敏感元件,以拾取水下声场中的标量信息。
- The singular integration will affect the precision of the result while the Boundary Element Method (BEM) is used in calculating sound radiation. 边界元法应用于计算辐射声场时,由于奇异积分的存在,会影响到计算结果的精度。
- Underwater sound communication is quite effective for joint tactical actions of submarines with other sub and / or surface ships. 水声通信系统对于水面战舰和潜艇之间,以及潜艇和潜艇之间的联合战术动作时非常有效的。
- The current study is to investigate the relationship between the sound radiation and enclosure vibration by using a laser vibrometer. 利用激光测振仪,测试了箱体振动速度随频率的变化,分析了前几个振动模态的声辐射能力。
- In this paper,ring-stiffened cylindrical shells coated with internal deck are experimented on vibration and sound radiation. 对具有内部甲板的环肋柱壳模型进行振动和声辐射试验。
- The gradient polyurethanes with polyurethanes/inorganic fillers were prepared and their underwater sound absorption coefficients were measured in sound tube. 制备了由聚氨酯/无机填料组成的梯度聚氨酯,并在声管中测试其水声吸声系数。
- Underwater sound was received using a hydrophone connected to a charge amplifier and a data-acquisition system for capturing the main characteristics of the sound. 在本文中,我们提出一个使用单一摄影机的即时手势辨识系统,用以控制虚拟环境中摄影机的方位与运动以达到互动导览的目的。
- The numerical results explain that the vibration and sound radiation of stern can be degraded by enforcing the rigidity of rudder or reducing the length of the vane. 结果显示舵翼结构与周围流体的相互作用很大,改变其尺寸和刚度会使得模型的声压发生很大的变化,同时流固耦合现象的存在使得模型在水中的频率明显下降,并且模态阶数的顺序也发生了改变。
- A new theory, named the Resonance Radiation Theory (RRT), is presented in order to deeper understalldingthe mechanisms of sound radiation by submerged structure. 为了深入认识水中结构的声辐射机理,木文提出一个称为共振辐射理论(ResonanceRadiationTheory-RRT)的新理论。