The circumferential profile of cylinder, as a classic shape, has been widely adopted in single-layer latticed shells. Previous research into these structures primarily concentrated on their buckling behavior. In this work, novel two-way aluminum alloy cable-stiffened shell is proposed to explore shape optimization procedure such structure. addition, the behavior optimized and cylindrical shells...

PANDA2, a computer program for the minimum-weight design of elastic perfect and imperfect stiffened cylindrical panels and shells under multiple sets of combined loads, is used to obtain optimum designs of uniformly axially compressed elastic internal T-ring and external T-stringer stiffened cylindrical shells with initial imperfections in the form of the general buckling mode. The optimum desi...

This study aims to investigate the effects of geometric imperfections on buckling of thin cylindrical shells due to global shear. To this end, more than 320 finite element models of cylindrical shells with different diameter to thickness ratios were prepared. Random imperfections with different amplitudes were applied to numerical models. The results revealed that global buckling of cylindrical...

in this paper the meshless local petrov-galerkin (mlpg) method is implemented to study the buckling of isotropic cylindrical shells under axial load. displacement field equations, based on donnell and first order shear deformation theory, are taken into consideration. the set of governing equations of motion are numerically solved by the mlpg method in which according to a semi-inverse method, ...

The cylindrical shell is a widely used structure in engineering practice, and its main form of failure instability due to buckling. As classical problem the field mechanics, stability shells has been studied extensively. However, large difference between theoretically predicted results critical buckling load experimental for subjected uniform axial pressure contributed continuous development th...

Risk-based design of marine pressure hulls require computationally efficient and precise models predicting collapse pressures ring stiffened cylindrical shells as a function realistic geometrical imperfections. However, the empirical interframe commonly implemented in codes do not explicitly depend on imperfections, existing analytical are only valid for axisymmetrically imperfect shells. The g...

Underwater explosion seriously affects the combat performance and vitality of submarines. In order to improve blast resistance stiffened double cylindrical shells, a new type style that replaces traditional T-shaped stiffeners with circular tube stiffeners, namely O-shaped are studied. A series comparative underwater tests carried out on two scaled shells O stiffeners. Based tests, more detaile...