在已知内层壳体振动速度的情况下，计算出流场中距外层壳体一定距离处的声压级。
The sound pressure level at certain distance from the outer shell in flow field is obtained when the vibration velocity of the inner shell is known.
利用拉普拉斯变换及逆变换，求得了均布突加荷载作用下壳体振动响应完全解析解。
The analytical solution for dynamic response of the lining subjected to sudden internal uniform loading is derived using the Laplace transforms and inverse transforms.
周向激励下加筋圆柱壳体振动和声辐射特性的研究是预测水下航行器壳体噪声的关键环节。
Studies of the sound radiation and vibration of the ring stiffened cylindrical shell under the circumferential excitation are important to predict the noise of the underwater naval craft.
首先利用扁壳体理论建立了大跨柔性屋盖的振动方程。
First, the equations of vibration were established using the theory of thin shallow shells.
研究了由推进剂药柱和壳体组成的燃烧室结构径向振动对发动机内弹道性能的影响。
The effect of radial vibration of the chamber structure composed of propellant grain and case on the internal ballistic property of solid rocket motor (SRM) was investigated.
噪声载荷作用下薄壁壳体的振动应力响应分析是声疲劳研究的重要任务之一。
Random vibration response analysis of thin-shells excited by acoustic loads is one of the important tasks of sonic fatigue investigation.
目的针对壳体结构模型进行减振设计，使其能经受宽带随机振动环境考核。
Objective In order to ensure that a shell structure can stand up the test of wideband random vibration environment, a vibration isolation design method is developed.
给出了旋转机械的转子、叶片、轴承、壳体、热交换器的管束和振动机械的可靠性设计分析方法和一些应用实例。
Reliability design methods of rotors, blades, bearing and outside cages of rotary machinery and vibration machinery, as well as tubes of heat changer are elucidated with some practical examples.
基于流体的波动方程和结构的动力方程，利用有限元方法研究了考虑流固耦合时的双层加肋圆柱壳体的振动特性。
Based on the acoustic wave equation and structural motion equation, the vibration characteristics from the fluid loaded stiffened cylindrical double shell are studied by using finite element method.
分析了壳体的固有模态、激励力和声辐射三者之间的关系，这为用主动控制方法降低有限长加筋双层圆柱壳的振动噪声，提供了理论依据。
The vibration and sound radiation from a finite stiffened double cylindrical shell driven by a point force on the shell surface in the radial direction are studied in this paper.
以位移模型为基础，用有限元中的分离变量法的理论，求解了圆柱壳自由振动的固有频率，计算结果与壳体解析解相一致。
This paper calculate inherent frequency of the free vibration of the cylinder shell with the theory of the separated variable method on the basis of displacement model.
即，底座起到动力减震器的作用，以抑制壳体（100）的振动和噪 音。
That is, the mount functions as a dynamic vibration absorber to suppress vibration and noise of the shell (100).
利用有限元、边界元和统计能量分析方法并结合软件对圆柱壳体在流场中受激振动及声辐射效率作了数值计算分析研究。
Numerical analysis of vibration and sound radiation efficiency from a submerged cylindrical shell has been carried out by using FEM methods, BEM methods and statistical energy methods.
基于壳体水弹性理论，探讨了潜水器动力舱振动与声辐射建模及分析方法，并对常用潜水器动力舱振动和声辐射进行了分析。
The model of vibration and sound radiation of submarine dynamic cabin and its analysis method are discussed with the help of the hydroelasticity theory of shells.
本文用振动试验建模的方法来探索旋转壳体的干、湿模态参数及其非线性振动特性。
By using the method of establishing model through vibration test, this paper discusses the rotatory shell's dry-humid mode parameters and its non-linear vibration properties.
本文将拱坝这样一种几何形状和边界条件都比较复杂的壳体结构划分为梁拱两组子结构，利用它们的一维模态建立动力方程求解振动问题。
A method is presented here for the dynamic analysis of arch dams by means of vibration modes of one dimensional arch and cantilever elements.
钢筋混凝土双曲冷却塔壳体的阵风响应曾应用随机振动理论的谱分析法进行研究。
The response of the shell of reenforced concrete hyperbolic cooling towers to turbulent wind has been investigated theoretically by applying the spectrum method of random vibration theory.
实验结果表明：施加电场后的电流变液夹层圆柱壳体对处于中、高频率的声波没有明显的吸收和阻隔效果，但对于由声激励引起的结构振动有明显的控制作用。
The test results show that by adjusting applied electrical field strength, the properties of the ER material as well as the sandwich cylindrical shell can be changed.
以有矩理论导出圆柱壳体的振动微分方程。
The dynamic equations of the circular cylindrical shell are based upon an exact moment theory.
计算分析了不同边界条件下壳体的振动频率。
The resonant frequencies of the above shell under different boundary conditions are also discussed and calculated.
当壳体的经线有折角时，我们采用模态综合法分析它的固有振动特性。
If there exists a discontinuity in the meridian for a rotational shell, we use the modal synthesis method to analyse the free vibration of this kind of shell.
扬声器具有壳体、磁路、振动膜和通道。
The speaker has a case, a magnetic circuit, a diaphragm, and a passage.
通过阻尼层与壳体作用的边界条件求解流固耦合振动方程，解得辐射声场的表达式。
Through the border conditions of damping layer combined with the shell the coupled oscillation equation was solve, and radiation sound field expression was shown using the shell displacements.
最终分析出发动机壳体的振动噪声特性。
Finally, acquaints the vibration and noise characteristic of the engine shell.
由于根据壳体(100)的固有频率来控制底座(130)的固有频率以减震，所以可防止壳体(100)的振动。
As the natural frequency of the mount (130) is controlled according to the natural frequency of the shell (100) to absorb vibration, vibration of the shell (100) can be prevented.
为了满足壳体零件低振动、低噪声的要求，就必须对壳体零件进行动态特性分析和结构动态设计。
In order to satisfy low level in vibration and noise of shield part, the analysis of dynamic performance and structure design should be utilized.
为了满足壳体零件低振动、低噪声的要求，就必须对壳体零件进行动态特性分析和结构动态设计。
In order to satisfy low level in vibration and noise of shield part, the analysis of dynamic performance and structure design should be utilized.
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