Fatigue Life Analysis of the Submarine Rudder Stock Mechanism at Arctic Low Temperatures

Under the action of Arctic low temperatures and long-term alternating loads, fatigue life submarine rudder stock mechanism is severely tested. In this paper, research method static strength analysis proposed by combining multibody dynamics, finite element method, tests. Based on three-dimensional model motion law mechanism, a dynamic established, time history loads each node are obtained. According to working temperature range in Arctic, low-temperature tensile tests carried out. experimental data, built, Using S–N design simulation performed using nCode DesignLife. The results show that decreases significantly when reduced from 0 °C −60 °C. This can provide reference for establishment environment.