文档介绍：Engineering Stm.'mre~. Vol. 20, No. 8, pp. 752 760, 1998
(cj 1998 Elsevier Science Ltd
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Buckling of short tanks due to
hurricanes
Fernando G. Flores
Departamento de Estructuras, Universidad Nacional de C6rdoba and CONICET, Casilla de
Correos 916, 5000 C6rdoba, Argentina
Luis A. Godoy
Civil Engineering Department, University of Puerto Rico at Mayaguez, Mayaguez,
PR 00681-5000, USA
(Received June 1996; revised version accepted April 1997)
Buckling of thin-walled, short tanks, under severe wind conditions,
is investigated using numerical methods. The shells are representa-
tive of cylindrical tanks that failed during hurricane Marilyn in the
Caribbean islands in 1995, with radius/thickness ratio of 1900 and
radius/height ratio of 5. Several models are employed to study
instability: bifurcation buckling from a linear fundamental path,
nonlinear analysis of imperfect tank, and dynamic response. Wind
is modeled using several pressure distributions in the circumfer-
ential direction, and the results pared with those due to
axisymmetric pressure. The results show that for the present very
thin-walled short tanks, bifurcation buckling produces good esti-
mates of the critical state; however, the structure i