I am performing an static analysis for a closed rectangular gas tank (steel) with 3mm thickness which is exposed to internal gas pressure of 0.08 Mpa.
Gas tank dimensions are 1400 x 950 x 625 (L x H x W). I need to find maximum deformation and stress values.
Please let me know how to perform hand calculations for the above case for validation purpose.
Note: For FEA simplification,I have took symmetry of gas tank through it length and used midsurface (shell elements) in ANSYS.
Thanks,
Naveen
Hi Naveenkumar K S,
See ASME VIII Division 1 Appendix 13. This part of the code contains rules for the design of vessels with non circular cross section. Check if your dimensions ratio fit inside the scope of the design rules. EN 1993-4-2 also has some design criteria. The EN standard calls another part of the same standard that has tables similar to the ones present in the book: Roark's Formulas for Stress and Strain. Be aware that the EN and the ASME code will incorporate design safety factors inside the design rules.
Best regards.
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