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Volume 26 Issue 3
 
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2018  >  26(3): 247-252
WANG Sheng, YIN Shao-ping, GUO Jun, WANG Zhong, ZHANG Zhi-min. Correction of Modal Calculation Model for Torpedo Shell Based on Static Test[J]. Journal of Unmanned Undersea Systems, 2018, 26(3): 247-252. doi: 10.11993/j.issn.2096-3920.2018.03.010
Citation: WANG Sheng, YIN Shao-ping, GUO Jun, WANG Zhong, ZHANG Zhi-min. Correction of Modal Calculation Model for Torpedo Shell Based on Static Test[J]. Journal of Unmanned Undersea Systems, 2018, 26(3): 247-252. doi: 10.11993/j.issn.2096-3920.2018.03.010
shu

Correction of Modal Calculation Model for Torpedo Shell Based on Static Test

doi: 10.11993/j.issn.2096-3920.2018.03.010
  • 1.

    The 705 Research Institute, China Shipbuilding Industry Corporation, Xi’an 710077, China

  • 2.

    Science and Technology on Underwater Information and Control Laboratory, Xi’an 710077, China

  • Received Date: 2017-08-29
  • Rev Recd Date: 2017-11-02
  • Publish Date: 2018-06-30
    Abstract
  • The torpedo shell joined with wedge-ring connection is simplified as two shells and one annular ring. This simple structure is modeled to build a simple, applicative finite element analysis model, which contains seven contact surfaces and a parameter of contact stiffness coefficient. Static loading test and static simulation analysis are conducted to identify the contact stiffness of the model. The modal of the modified model is calculated via simulation, and the relative error of the modal frequency between simulation and modal test is not more than 2.65%, verifying the accuracy of the proposed modal simulation method. This study may provide a reference for finite element modeling and modal simulation of the structures with wedge-ring connection, such as torpedo shell.

     

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