Regarding the issue of head thickness.
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When calculating the thickness of a conical shell with folds, the thickness of the transition section was found to be 12 mm, while that of the joint area was 18 mm. Should the conical shell head be designed with a thickness of 18 mm, corresponding to the thickness of the folds? But the wall thickness of the cylinder I calculated is 12. Is this correct? Is such a situation possible? Thank you all for your help; I’m a beginner.
To avoid excessive local stress, could we consider designing the cylinder itself to have a thickness of 18 mm as well?