EXPERIMENTAL AND THEORETICAL STUDIES FATIGUE OF MATERIALS AND STRUCTURES UNDER HIGH-TEMPERATURE AND HIGH-CYCLE LOADING

Abstract

The experimental research of high-cycle fatigue alloy VJ-159 under high-temperature loading are presented. A variant of the damage accumulation model suggested, taking into account the main factors affecting the high-cycle strength of structural materials. The results of numerical simulation the experimental sample and the bellows fragment fracture, confirming the efficiency of the proposed model and created on its basis software tools for the analysis high-cycle processes fracture construction elements.

Keywords: high-cycle fatigue, damage accumulation, fracture, strength, experiment, numerical simulation.