水中弹性球壳的共振声辐射理论

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。它是由共振散射理论（ResonanceScatterinyTheory－RST）推广得到的。对于一个在内壁简谐力激励下的水中弹性球壳，从经典的Rayleish简正级数解出发导出了共振辐射公式。水中薄钢球壳的辐射分波的数值计算表明，辐射形态函数与散射形态函数相似。由复共振极点参数按照共振辐射公式合成的辐射声功率曲线与严格理论的计算结果符合良好。

加筋薄壁结构振动声辐射理论及应用

加筋薄壁结构经常被应用在建设工程中,并在单个结构的基础上组合成复杂结构,了解这种结构的振动声辐射理论能够为减振降噪性能的提高和加筋薄壁结构的优化奠定理论基础。为此,本文分析了结构振动和声辐射之间的关系,以及薄壁结构和声腔耦合效应,并以金属外壳模板耦合振动及声辐射为例分析了振动声辐射理论在加筋薄壁结构中的应用。

超声波无触点支承陀螺仪技术的理论分析及实现

提出了一种超声无触点支承方案,详细介绍了超声无触点支承原理。通过对声辐射理论的研究,获得超声无触点支承的理论依据。实验证明实现这种超声波无触点支承是可行的。根据这一理论,对三轴无触点支承结构进行了选择设计。

A General Method to Study the Sound Radiation of a Finite Cylindrical Shell Based on Elastic Theory

A general method was proposed to study the sound and vibration of a finite cylindrical shell with elastic theory. This method was developed through comprehensive analysis of the uncoupled Helmholtz equation obtained by the decomposition of elastic equations and the structure of the solution of a finite cylindrical shell analyzed by thin shell theory. The proposed method is theoretically suitable for arbitrary thickness of the shell and any frequency. Also, the results obtained through the method can be used to determine the range of application of the thin shell theory. Furthermore, the proposed method can deal with the problems limited by the thin shell theory. Additionally, the method can be suitable for several types of complex cylindrical shell such as the ring-stiffened cylindrical shell, damped cylindrical shell, and double cylindrical shell.