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EN 1993-1-6 DESIGN CHECKING OF SHELLSANNEX A n Membrane theor stresses in shells

A1 General Action effects and resistances: characteristic values of the action

effect or resistance are provided when characteristic values of the

actions, geometric parameters and material properties are adopted. .

Boundary conditions:

the boundary conditions for cylinders: radially free at both ends, axiallysupported at one end, and rotationally restrained at both ends.

shell wall, so that the combined stress resultant introduced into the shellis solely in the direction of the shell meridian.

,at one end, and rotationally restrained at both ends.

Sign convention: The sign convention for stresses should be takeneveryw ere as ens on pos ve.

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EN 1993-1-6 DESIGN CHECKING OF SHELLSANNEX A Membrane theor stresses in shells

A2 Unstiffened Cylindrical ShellsThe followin fi ures ive the values of internal forces and stresses

for different loading situations

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EN 1993-1-6 DESIGN CHECKING OF SHELLSANNEX A Membrane theor stresses in shells

A3 Unstiffened Conical Shells

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EN 1993-1-6 DESIGN CHECKING OF SHELLSANNEX B n Additional ex ressions for lastic

B1 General Resistances: The resistances calculated usin the ex ressions in

collapse resistances

this annex may be assumed to provide characteristic values of the

resistance when characteristic values of the geometric parameters. Notations: specific for geometrical dimensions, stresses and loads,

according to 1.4.

the boundary condition notations should be taken as detailed in 5.2.2.

the term clamped should be taken to refer to BC1r and the termpinned to refer to BC2f.

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EN 1993-1-6 DESIGN CHECKING OF SHELLSANNEX B Ex ressions for lastic resistances

B2 Unstiffened Cylindrical Shells

nR unit circumference) is given by:

Range of applicability:Dependent parameters:

The lastic resistance P force erunit circumference) is given by:

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EN 1993-1-6 DESIGN CHECKING OF SHELLSANNEX B Ex ressions for lastic resistances

B2 Unstiffened Cylindrical Shells

Range of applicability:

The plastic resistance ( P n and p nalwa s ositive outwards aregiven by:

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EN 1993-1-6 DESIGN CHECKING OF SHELLSANNEX B Ex ressions for lastic resistances

B3 Ring Stiffened Cylindrical Shells The plasticresistance P nR (forceper unitcircumference) isgiven by:

Range of applicability:

The plastic resistance P nR (force perun c rcum erence s g ven y:

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EN 1993-1-6 DESIGN CHECKING OF SHELLSANNEX B Ex ressions for lastic resistances

B3 Ring Stiffened Cylindrical Shells

Range of applicability:

n nalways positive outwards) aregiven by:

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EN 1993-1-6 DESIGN CHECKING OF SHELLSANNEX B Ex ressions for lastic resistances

B4 Junctions between shellsDependent parameters:

The plastic resistance is given by:

Range of applicability:

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EN 1993-1-6 DESIGN CHECKING OF SHELLSANNEX B Ex ressions for lastic resistances

B4 Junctions between shells

Dependent parameters:

The plastic resistance is given by:

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EN 1993-1-6 DESIGN CHECKING OF SHELLSANNEX B Ex ressions for lastic resistances

B5 Circular plates with axisymmetric boundary conditions

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EN 1993-1-6 DESIGN CHECKING OF SHELLSANNEX B Ex ressions for lastic resistances

B5 Circular plates with axisymmetric boundary conditions