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Inner Barrel

Do        = 1.792 ft

Di        = 1.625 ft

Esteel= 4.32 * 109 lb / ft2

Iyy        = π/64*(Do4-Di4) = 0.164 ft4

EIyy        = Esteel * Iyy = 7.065 * 108 lb.ft2

EIzz        = EIyy =7.065 * 108 lb.ft2

Gsteel= 1.73 * 109 lb / ft2

J        = 2 * Iyy =0.327 ft4

GJ        = 5.652 * 108 lb.ft2/rad

A        = π/4*(Do2-Di2) = 0.447 ft2

EA        =100 lb (nominal)

M        = (ρsteel * A) * 110% (couplings) = 7.493 slugs /ft

Dd        = 1.792 ft

V        = π/4*(Do2) = 2.521 ft2

Db        = 1.792 ft