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...

Generally, thin cylindrical shells are susceptible for geometrical imperfections like non-circularity, non-cylindricity, dents, swellings etc. All these geometrical imperfections decrease the static buckling strength of thin cylindrical shells. In this work, neighbourhood effect of two circumferential short dents on the buckling behaviour of thin short stainless steel cylindrical shell is studi...