Code Based Fatigue Life Prediction of a Pressure Vessel and its Validation

摘要

In this work the fatigue assessment of a real size pressure vessel subject to internal pressure fluctuations will be carried out. A comparison of the fatigue life of the pressure vessel obtained using well established design by analysis techniques proposed in ASME Ⅷ ― Division Ⅱ, BS 5550 and AD-Merkblaetter, and the new European CEN procedures was undertaken. The stress analysis proposed in the design codes will be performed using FEM applying submodeling techniques for calculating structural and peak stresses in hot spot locations of the pressure vessel. The stresses obtained using the finite element modelling were validated through a real size experimental test.