|
Abstract:
In this paper, the finite element software ABAQUS is used to study the crack propagation rule. In this paper, a theoretical formula for the general process of fatigue crack propagation is derived, and the calculation scheme of simulation programming is determined; The simulation model is validated by the reuse test, and then the fatigue crack propagation rule of the pressure pipe under different parameters is simulated and analyzed by the validated model. The final results show that the fatigue crack in the pipe wall thickness, crack shape factor and stress ratio under the influence of similar, with the parameters of the fatigue life of the cracked pipe are rising gradually decreased, and the decrease rate is gradually reduced.
|
