<big id="idsxq"><nobr id="idsxq"></nobr></big>
<th id="idsxq"><video id="idsxq"><span id="idsxq"></span></video></th>
    1. <strike id="idsxq"></strike>
      <tr id="idsxq"></tr>
      <code id="idsxq"><nobr id="idsxq"><track id="idsxq"></track></nobr></code>
      <code id="idsxq"></code>
      Full-Text Search:
      Home|About CNKI|User Service|中文
      Add to Favorite Get Latest Update

      Effects of Suspension Rope on Modal Experiment of Rockets

      TANG Bo;FAN Rui-xiang;PAN Zhong-wen;ZHANG Yong-liang;Beijing Institute of Astronautical System Engineering;China Academy of Launch Vehicle Technology;Beijing Institute of Structure & Environment;  
      The vibration equations and boundary conditions are established from the energy function of a beam system which is suspended with ropes; subsequently,the natural frequency characteristics equation is acquired. It is demonstrated that the free-free boundary model is the degenerated condition of the beam system. By solving this characteristics equation numerically,the natural frequency and modal relative to the length or density of the suspension rope is obtained. The appearance of the multiple first-order modals in a certain rocket's modal test is explained by using this method.
      Download(CAJ format) Download(PDF format)
      CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
      ?CNKI All Rights Reserved
      色欲天天婬色婬香影院-73影院-粉色视频-成年女人免费播放影院