Abstract
The article presents results of analysis of the stressed state of screw propeller blades of the “Krym”, “Marshal Buddennyi”, and “Boris Butoma” series of ships. A methodical approach is proposed for evaluating the effect of sea state on character of distribution and magnitude of hydrodynamic load on the blade surface. A brief description is given of the SDSB program set which realizes the finite element method procedure for blades of complex geometry. Finite element models of the blades and their stressed state are developed into a plane in the form of lines of equal levels of principal stresses on the driving and sucking in faces of blades. As an example in the use of results of analysis of the stressed state, the effect of a crack-like casting defect on the safety factor in cyclic loading of a propeller blade of the ship “Marshal Rokossovskii” is calculated.
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