Volume 35 Issue 5
Sep 2021
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BAI Hui, HUI Hu, YANG Bin, KONG Fang. Strain Response and Analysis of Pressure Vessels with Small Delamination Defects[J]. Chinese Journal of High Pressure Physics, 2021, 35(5): 054203. doi: 10.11858/gywlxb.20210717
Citation: BAI Hui, HUI Hu, YANG Bin, KONG Fang. Strain Response and Analysis of Pressure Vessels with Small Delamination Defects[J]. Chinese Journal of High Pressure Physics, 2021, 35(5): 054203. doi: 10.11858/gywlxb.20210717

Strain Response and Analysis of Pressure Vessels with Small Delamination Defects

doi: 10.11858/gywlxb.20210717
  • Received Date: 27 Jan 2021
  • Rev Recd Date: 14 Feb 2021
  • Using vinyl ester resin prepreg and winding method, a ECR corrosion resistant glass fiber reinforced epoxy resin matrix composite pressure vessel was manufactured. The strain variation of the pressure cylinder was measured in the hydraulic test using the electrical method.And the strain response of the pressure vessel with internal delamination defects under external loadings was predicted by Abaqus/Explicit finite element simulation. The experimental and simulation results show that the error between the results of the finite element model and the experimental results is less than 12%. When the composite pressure vessel containing internal delamination defects (defect diameter 10, 20, 30, 40 and50 mm) is subjected to displacement load, the circumferential strain is the main strain, the maximum longitudinal strain and Mises stress position coincide with the loading position, and the maximum Mises stress increases with the increasing delamination area.

     

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