Chapter 7: Pipes, Tubes, and Cylinders

SYMBOLS ^[5], ^[6], ^[9]

d		diameter of cylinder, m (in)
d _c		diameter of contact surface in compound cylinder, m (in)
d _i		inside diameter of cylinder or pipe or tube, m (in)
d _o		outside diameter of cylinder or pipe or tube, m (in)
e		factor for expanded tube ends
E		modulus of elasticity, GPa (Mpsi)
h or t		thickness of cylinder or pipe or tube, m (in)
I		moment of inertia, area, m ⁴ or cm ⁴ (in ⁴)
K		constant
L		maximum distance between supports or stiffening rings, m (in)
p		maximum allowable working pressure, MPa (psi)
p _c		unit pressure between the compound cylinders, MPa (psi)
p _cr		collapsing pressure, MPa (psi)
p _i		internal pressure, MPa (psi)
p _o		external pressure, MPa (psi)
r _i		inside radius of tube or pipe, m (in)
?		permissible working stress, from Table 7-1, MPa (psi)
? _c		crushing stress, MPa (psi)
? _r		radial stress (also with primes), MPa (psi)
? _r(max)		maximum radial stress, MPa (psi)
? _sa		maximum allowable stress value at design condition, MPa (psi)
? _su		ultimate strength, MPa (psi)
? _?		tangential stress (also with primes), MPa (psi)
? _?(max)		maximum tangential stress, MPa (psi)
? _max		maximum shear stress, MPa (psi)
?		Poisson's ratio
?		efficiency, from Table...

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