Abstract
The results of an experimental investigation of the stability of cylindrical shells (r=200 mm, l=384 mm, h=0.5 mm) of titanium alloy regularly reinforced by 36 stringers and 2 ribs and freely supported on the edges are given. The parameter of internal pressure ¯q=q/E·(r/h)2 varies from 0 to 0.85 so that at its maximum values failure of the shells occurred as the result of exhaustion of the strength of the material. It is shown that within the limits of elasticity the experimental values of the critical loads agree well with the calculated obtained according to an approximate method using a monomial approximation of deflection and introducing the empirical coefficient 1/2 to the value of internal pressure. Depending upon the combination of individual constituents of combined loading there are two forms of loss of rigidity, bulging of the shell between the ribs or combined bulging of the shell and the stringers between the ribs.
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Translated from Problemy Prochnosti, No. 12, pp. 46–50, December, 1993.
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Pal'chevskii, A.S., Kukarina, A.I. The stability of ribbed cylindrical shells in combined loading by an axial force, a torsional moment, and internal pressure. Strength Mater 25, 894–897 (1993). https://doi.org/10.1007/BF00774636
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DOI: https://doi.org/10.1007/BF00774636