539.3 Mathematical modeling of fatigue failure during high-frequency bending vibrations of titanium alloy specimens
Stratula B. A. (Institute for Computer Aided Design of the Russian Academy of Sciences)
VERY-HIGH-CYCLE FATIGUE, DAMAGE, FATIGUE FRACTURE, HIGH FREQUENCY VIBRATIONS, TITANIUM ALLOY
doi: 10.18698/2309-3684-2021-4-4557
A unified numerical method for different fatigue fracture modes from low-cycle to very-high-cycle fatigue is described on the basis of a multi-mode two-criterion model of cyclic damage. This method allows for a through calculation of the evolution of crack-like fatigue fracture zones in a material, as well as an assessment of the durability of specimens from crack nucleation to macrofracture. Fatigue fracture calculations of titanium alloy specimens under prolonged cyclic loading under three-point bending scheme with development of "quasi-cracks" in modes from multi-cycle to super-multi-cycle fatigue have been carried out. Numerical and experimental results are compared to each other.
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Данное исследование выполнено в рамках Госзадания ИАП РАН.
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