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Module EN 16.4

Forces and moments

Spigots on vessels - consideration of additional loads from connected pipelines

Dimensionless curve representation of Fz,max

Fig. 16.4-1 - Dimensionless curve representation of Fz,max

(Upper curve = maximum amplified, lower curve = unamplified)

Dimensionless curve representation of MB,max

Figure 16.4-2 - Dimensionless curve representation of MB,max

Stress factor of a spherical shell under internal pressure (flush nozzle)

Figure 16.4-3 - Stress factor of a spherical shell under internal pressure (flush nozzle)


Stress factor of a spherical shell under internal pressure (pierced nozzle)

Fig. 16.4-4 - Stress factor of a spherical shell under internal pressure (through-passed nozzle)

Stress factor of a spherical shell under moment load (flush nozzle)

Figure 16.4-5 - Stress factor of a spherical shell under moment load (flush nozzle)


Stress factor of a spherical shell under moment load (through-connected nozzle)

Fig. 16.4-6 - Stress factor of a spherical shell under moment load (through-connected nozzle)

Stress factor of a spherical shell under axial force (flush nozzle)

Figure 16.4-7 - Stress factor of a spherical shell under axial force (flush nozzle)


Stress factor of a spherical shell under axial force (through-connected nozzle)

Fig. 16.4-8 - Stress factor of a spherical shell under axial force (through-connected nozzle)