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ASME VIII 2004 Part UHX Tubesheet

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Bartholomew69

Mechanical
Joined
Nov 14, 2004
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10
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ZA
I have been doing calculations on tubesheets using UHX-13. I am using a excel spreadsheet and am looking for excel formulae for the Bessel functions (actually Kelvin functions) ber(x) and bei(x)and their derivatives. Can anyone help - I can only find the BesselY(x,n) and BesselJ(x,n) functions. What is the relationship between ber(x)/bei(x) and BesselY/BesselJ??
 
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