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To assess the reliability of marine propulsion shafting, an assessment model is established based on systemlevel stress — strength interference analysis, where the relationship between component failure probability attribute and stress-strength distribution was described. Different from the conventional system reliability estimation method by which system reliability was calculated directly from component...
The linear elastic fracture analysis of stiffened plates with central through crack under uniform bending external loading are carried out; The method to calculate and analyze stress intensity factor of cracked stiffened plate is put forward; The thickness effects are considered in the analysis of stiffened plate and the stiffened plate structure is discretized into a plate with center through crack...
Perforated ship stiffened plate is the basic component in ship and ocean engineering and is of great importance to study the fatigue crack propagation life due to cyclic loading. To evaluate the safety of ship stiffened plate based on the fatigue crack propagation method, the key issue is to study the crack propagation rate for stiffened plate subjected to cyclic loading. In this paper, the fatigue...
In order to analyze the increasing accumulative plastic damage of ship stiffened plate, combing the interaction coefficient of stiffener and plate, with plastic strain of damage evolution as the control quantity, the low-cycle fatigue accumulative increasing plastic damage model and low-cycle fatigue life model for stiffened plates have been derived based on the theory of damage mechanics. The fatigue...
Antifouling and drag reduction of ships are two critical issues in the shipping industry, which significantly affect the efficiency, safety, reliability of ships. Drag reduction by the bionic jet surface is an effective approach for reducing the energy consumption of ships. However, complicated by the impact of marine biofouling, it is invalid to consider the isolated effect of drag reduction of jet...
Antifouling and drag reduction of ships are two critical issues in the shipping industry, which significantly affect the efficiency, safety, reliability of ships. Drag reduction by the bionic jet surface is an effective approach for reducing the energy consumption of ships. However, complicated by the impact of marine biofouling, it is invalid to consider the isolated effect of drag reduction of jet...
Compared with plane fracture problem, elastic-plastic fracture problem of stiffened plate under bending has its particularity and inevitability for research, and its essence is a three-dimensional fracture mechanics problem. The aim of this paper is to develop a method to analyze bending elastic-plastic fracture of stiffened plates with crack in plate based on Dugdale model, combined with the Paris...
The transmission system on a ship is one of the most important parts of marine power equipment. Based on the power transferred by the thrust shaft, the ship is forward and backward. Due to the long journey of ships, the thrust shaft keeps on running for a long time. Moreover, the working conditions are very rigorous because of frequent changes of navigation environment. The thrust shaft is under cycle...
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