Volume 37 Issue 4
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WEI Dasheng, MA Mengdi, WANG Yanrong, LI Di, ZHANG Hui. Prediction method and experimental verification of the burst speed of the vortex reducer[J]. Journal of Aerospace Power, 2022, 37(4): 704-710. doi: 10.13224/j.cnki.jasp.20210100
Citation: WEI Dasheng, MA Mengdi, WANG Yanrong, LI Di, ZHANG Hui. Prediction method and experimental verification of the burst speed of the vortex reducer[J]. Journal of Aerospace Power, 2022, 37(4): 704-710. doi: 10.13224/j.cnki.jasp.20210100

Prediction method and experimental verification of the burst speed of the vortex reducer

doi: 10.13224/j.cnki.jasp.20210100
  • Received Date: 2021-03-07
  • Publish Date: 2022-04-28
  • The problem of the burst speed of vortex reducer was studied by numerical analysis combined with experiment.According to the stress state of vortex reducer,the simulative specimen was designed,and the failure experiments under the monotonic tensile load were carried out.The failure parameters reflecting the structural stress characteristics were obtained.Furthermore,based on the finite element method,the failure parameters of the simulative specimen were introduced into burst speed prediction of vortex reducer and the influences of different failure criterion on the burst speed prediction were compared.The analysis showed that the stress gradient of simulative specimen was in good agreement with structure,which can accurately describe the structural stress characteristics.Burst speeds calculated by the methods of local plasticity and based on tensile strength of materials were more conservative,which were 15% and 23% lower than those predicted by average stress method,respectively.The method developed has engineering reference value for the failure analysis of structures.

     

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