Quolifying thickness reducetion for forming head of pressure vessel in fabrication

Question

Quolifying thickness reducetion for forming head of pressure vessel in fabrication

mechengineer (Mechanical)

(OP)

18 Jul 24 04:14

Hi QC experts,
I have a vendor, the nominal dished head thickness is 14 mm, after forming 7 mm, the stress calculation thickness required is 6 mm. It is ok in deign/stress calculation. But I don't believe it is a good/qualified product with reduced a half of the nominal thickness after forming, some where thickness reduced from 14 mm to 7 mm. Any regulations from code, user's specifications and fabrication experience for qualifying the forming head thickness reduction?
Thanks

SWComposites (Aerospace) · Answer 1 · 2024-07-18 06:02:25

Depends on the required pressure. Someone needs to do a stress analysis using the actual thicknesses.

david339933 (Industrial) · Answer 2 · 2024-08-06 17:43:03

You don't give a lot of info, but I would check out UCS-79 (d)(2)(d)

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Quolifying thickness reducetion for forming head of pressure vessel in fabrication