Life of Structural Elements of Centrifuges with Allowance for Damage

The paper presents the procedure for calculating and predicting the state of critical structural elements in low-cycle fatigue with allowance for features of the operating conditions. The procedure is based on the nonlocalized damage concept and the allowance for the damage parameter in the system of constitutive equations using fast-rotating parts of laboratory centrifuges as an example. A macro- and microstructural analysis of the material is made, and the static and cyclic tests of the specimens of V95 (7075) aluminum alloy are carried out. The results of the experimental investigations are compared with the theoretical calculations performed based on the finite element method (the ANSYS software package).