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Circumferential and meridional stresses on the dome of composite pressure vessel

- January 30, 2025 at 12:17 am
  
  nm20004
  Subscriber
  
  I design a composite overwrapped pressure vessel in ACP(Pre) and static structural and I want to calculate the circumferential and the meridional stresses on the hemispherical domes of the vessel at a specific composite ply. I am not interested in the stresses along the fiber direction or transverse to the fiber direction.
  I tried to create o spherical coordinate system for the dome in order to calculate those stresses but I can't find such an option in static structural. Please, does anyone know another way to achieve my goal?
  Thank you in advance for your help!
- January 30, 2025 at 6:01 am
  
  Akshay Singh
  Ansys Employee
  
  Hello,
  You can create 2 different cylindrical co-ordinate systems and align them such that one is curled in hoop direction(csys1) and the other one is curled in meridonial direction(csys2) of hemisphere.
  Then add Normal stress results, set the first co-ordinate system to csys1 and axis to Y axis.
  similarly scope other stress to cys2 and corresponding axis.

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