theory of vibrations中文什么意思

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1. The main content of this paper contains : summarizing the foundational theory of vibration and noise , and establishing the analysis and computation flow chart of noise acoustic field of mechanical vibration ; taking a close drum shell as the research object , analyzing its dynamic characteristics and vibration response using finite element method , then going with the structural - acoustic coupling analysis based on the acoustic model analysis of the aerial intracavity of the close drum shell
   论文的主要内容包括：对振动和噪声的基础理论进行了概述，并建立了结构振动噪声声场分析计算的流程图。以封闭鼓形薄壳为分析对象，运用有限元法分析了其的动态特性及振动响应；同时在分析了封闭鼓形薄壳空气内腔的声学模态的基础上，对其进行了声固耦合分析；并作了该结构模型的外场声固耦合谐响应分析。
2. Therefor , the demands for manufacturing such mems devices are very critical . druing the manufacturing or masruing such devices , we need a very stable working platform , that is , making a deeper research on the basic technology and control theory of vibration and isolation for the platform
   因此，对于这些微机电系统器件的制造技术提出了很高的要求，在制造、测量这些微小器件时，需要一个非常稳定的精密的操作平台，包括深入研究并解决微制造平台隔振控制理论和基础技术。
3. Then experiment was processed to testify the calculated results . based on the theory of vibration mode , harmonic response and experiment , fea meshing , fea element and bound condition of expansion joint were analyzed . then a parametric fea modeling & post process software was developed by apdl and visual basic langrage
   本文采用有限元数值分析方法，利用大型商用有限元计算软件ansys ，研究了基于结构参数化设计思想的波纹管膨胀节的振动模态和含波纹管膨胀节管系的振动响应分析方法，开展了波纹管膨胀节模态试验验证。