EFFECT OF CREEP ON STRESSES IN CYLINDRICAL SHELLS

Technical Report · Thu Jun 16 04:00:00 EDT 1960

OSTI ID:4182360

Poritsky, H

Equations were set up for studying the effect of creep on stress distribution in stressed cylindrical shells. In the original elastic stress distribution, the stress component varied linearly across any line normal to the middle surface. As creep progressed this changes to a nonlinear distribution. The equations were formulated for calculation of these stresses and the elastic and plastic strains. Results indicated that the problem of calculating the creep in the cylindrical shell led to repeated solutions of the same equations as the static equations of an elastic shell. However, these equations applied to the time rate of change of the displacement components rather than to the components themselves. Certain right-handed members appeared in these equations in the same manner as the applied extennal forces. These extra terms were derived from the instantaneous rates of creep and involved their integral over the thickness of the shell and the moments of these rates of change. (M.C.G.)

• Research Organization: General Electric Co. General Engineering Lab., Schenectady, N.Y.
• NSA Number: NSA-14-019519
• OSTI ID: 4182360
• Report Number(s): 60-GL-121
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CREEP
CYLINDERS
DIFFERENTIAL EQUATIONS
DISTRIBUTION
ELASTICITY
EQUATIONS
INTEGRALS
MOMENTUM
NUMERICALS
PHYSICS
SHELLS
STRESSES
SURFACES
THICKNESS