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- Acoustic Radiation Element 声辐射元
- A mathematical model about acoustic radiation from structure submerged in unbounded sound field was developed using boundary element method. 摘要建立了无界声场中结构体声辐射的边界元数学模型。
- Boundary element methods are used to calculate acoustic radiation of the piping system, which provides the theoretical direction for decr... 计算分析结果表明,本文所建立的振动和声辐射模型及算法有效,有助于该类问题的解决。
- It is important in ASAC system based on acoustic radiation modes to obtain adjoint coefficient of the radiation modes. 基于声辐射模态理论进行ASAC控制系统中的一个重要内容就是获得声辐射模态伴随系数。
- It is important in ASAC based on acoustic radiation modes to obtain adjoint coefficients of the radiation modes. 声辐射模态伴随系数的获取是基于声辐射模态理论进行 ASAC控制中的重要环节。
- The examples actualize analysis of bilateral coupled vibration and acoustic radiation by using transitivity of CAE software results. 还利用CAE软件结果的可移植性,考虑了半封闭加筋圆柱结构内外分布不同介质时,实现了双边耦合振动声辐射分析求解。
- Based on the acoustic radiation mode analysis, the transfer matrix relating the pressure at every field point to normal component of surface velocity is formed. 摘要基于声辐射模态分析,建立了外部场压和结构表面振动速度之间关系的传递矩阵。
- Vibration transmission and underwater acoustic radiation characteristics experiment of floating raft system has an important technical application prospect. 对浮筏系统的振动传递及水下声辐射特性进行试验研究有其重要的工程应用前景。
- The transducers in acoustic logging tool are usually cylindrical piezoelectrical transducers and their acoustic radiation and acceptance have preferred directivity. 换能器的声辐射与接收指向性由其形状与尺寸确定。
- A coupled FEM/BEM for solving fluid-structure interaction problem in structure-borne noise propagation and underwater acoustic radiation is present in this paper. 摘要本文以偶合的有限元素/边界元素法,来处理结构噪音传播与水中噪音辐射中弹性结构物与流体之互制问题。
- This thesis studies a circularly polarized reflectarray based on a microstrip ring patch as a radiating element. 中文摘要本论文是以环形天线为幅射单元当架构,来研究一圆形极化反射阵列。
- To accomplish time delay scanning, variable delay networks are inserted in front of each radiating element. 要完成时滞扫描,就要把延时网络插入每个辐射单元的前端。
- Based on the modal analysis and harmonic respondence analysis of piping system, the acoustic radiation efficiency is calculated;therefore it illustrates the connection between the vibration and noise. 摘要基于管道振动的模态分析及谐响应分析,计算管道的声辐射效率,建立结构体振动与其辐射噪声之间的关系。
- It reviews the developing process of researching acoustic radiation of underwater elastic structures excited by mechanical forces chiefly, and puts forward the trends of the acoustoelasticity briefly. 本文系统综述声弹性研究的基本内容和方法以及重要结果,重点回顾水下弹性结构受机械力激励的外场声辐射研究的发展过程,并简单归纳声弹性研究的发展趋势。
- Only a properly matched antenna system will allow maximum power transfer from the 50 transmission line to the radiating element. 只有一个匹配合适的天线系统才能在发射时使能量充分辐射出去。
- And draw in the low-frequency range, the impact of internal air over the external shell’s acoustic radiation characteristic is very small.The effect of the internal air can be neglected. 3. 得出在低频范围内,内部空气对壳体外部声场声辐射特性的影响很小,可忽略内部空气的影响。
- A conclusion can thus be gained that NRD-guide can be used as an UWB antenna and a radiating element of antenna arrays due to small side leakage. 先从频域的角度研究了NRD波导用作超宽带天线时相关参数选择的依据,然后用FDTD方法研究了NRD波导的传播特性以及辐射特性,并与平行板天线的辐射特性比较,得出该天线的突出优点是具有较小的侧向泄漏。
- The acoustic radiation resistance matrix is combined with the velocity vector on a vibration surface to predict the total sound power radiated from the structure. 摘要利用声辐射阻力矩阵和振动面上的速度矢量预报了结构声辐射的总功率。
- As the excitation energy travels along the serpentine line, it will reach each successive radiating element with a uniformly increasing positive or negative phase shift. 当激励能量在馈线中传播时,将会在连续相邻的辐射单元中形成均匀递增的正的或者负的相移。