Allowable Buckling Stress In Cylindrical Shells [1420
Data
A = metal cross-sectional area, in.2 B=ASME Code allowable stress, psi C = end connection coefficient, use 1.0 for simply supported and 2.0 for cantilevered Cc. = max allowable slenderness ration per AWYVA D-100 D„ = OD of cylinder, in. E = modulus of elasticity, psi e = tolerance for peaking, in. FS = factor of safety
Fv = minimum specified yield strength, psi
F(, = allowable longitudinal compressive stress, psi
1 = moment in inertia, in.4 Lc = length at which critical stress is achieved, in.
1 = tolerance for banding, in. M = longitudinal bending moment, in.-lb Pt. = critical external pressure buckling load, psi Pcr = critical buckling load, lb Pj = internal pressure, psi Px = external pressure, psi R„ = vessel outside radius, in.
r = radius of gyration, in. T(. = factor for transition between elastic and inelastic buckling point per AWYVA D-100 wall thickness, in.
weight of vessel above plane of consideration, lb longitudinal stress, psi t
Allowable Stress, Fb
- Elastic
Usable portion ot Euler's equation
Short and intermedíate y Long columns / columns V/////////Z
Slenderness ratio, LVr
Figure 2-57. Graph showing comparison of column types with critical stress.
Usable portion ot Euler's equation
Short and intermedíate y Long columns / columns V/////////Z
Slenderness ratio, LVr
Figure 2-57. Graph showing comparison of column types with critical stress.
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