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Hemispherical Head Design Tool
ver E5.02
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Description
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Dimensions:
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Do [in] - outside diameter of head
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tb [in] - thickness before forming
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tf [in] - thickness after forming
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Corr [in] - corrosion allowance
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Material and Conditions:
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Material
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S [psi] - allowable stress
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E - head longitudinal efficiency
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P [psi] - interior pressure
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Calculated Properties:
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Pounds
[steel] =
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App. 1-4(f) calculation
is not included.
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Volume [cuft] =
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See UCS-79(d),
UNF-79(d), UHA-44(d) for head stress relief
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The UG-16(b) minimum
thickness requirement is not included.
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This sheet does not
calculate exterior pressure loads.
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This sheet is for
educational use only - use at your own risk.
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Variables:
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nt [in] =
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tf-Corr thickness with corrosion allowance removed
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L [in] =
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(Do-2*nt)/2 inside radius
with corrosion allowance removed
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Required Thickness: UG-32(f)
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Treq [in] =
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(P*L)/(2*S*E-0.2*P)+Corr
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Maximum Pressure: UG-32(f)
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Pmax [psi] =
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(2*S*E*nt)/(L+0.2*nt)
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Pressure Vessel Engineering Ltd.
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Finite Element Analysis ASME Code Calculations Canadian Vessel Registration
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120 Randall Drive, Suite B, Waterloo, Ontario,
Canada, N2V 1C6. 519 880-9808
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www.pveng.com
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