Effective thickness requirements for NBT47003 end caps
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The requirements for the effective thickness of elliptical and disc headings in NBT47003 pressure vessels are the same as those in GB150 – is this necessary? Which expert has a calculation method for elastic instability of internal pressure in headers?
The standard regulations must be followed; you may refer to the relevant explanations in the interpretation of GB150.
"The calculation method for elastic instability under internal pressure of end caps can be followed in HG/T 20582-2011 \"Code for Strength Calculation of Steel Chemical Vessels\", Chapter 5 Design and Calculation of Thin-Walled Convex End Caps Under Internal Pressure, 5.1.1 For elliptical and disc-shaped end caps subjected to internal pressure, when the ratio of wall thickness to diameter is small, in addition to considering strength failure under internal pressure, plastic collapse in the transition zone or internal pressure instability must also be taken into account. This chapter specifies that 0.0005≤δ/L
I take the liberty of digging up a grave; for 0.002≤δ/L