Energy Approach-Based Simulation of Structural Materials High-Cycle Fatigue

International Conference on Advanced Materials and New Technologies in Modern Materials Science 2015

Balayev, A.F.^1 ; Korolev, A.V.^1 ; Kochetkov, A.V.^2 ; Sklyarova, A.I.^1 ; Zakharov, O.V.^1

Yuri Gagarin State Technical University, Saratov, Russia^1

Perm National Research Polytechnic University, Perm, Russia^2

关键词: Energy approach;    Energy condition;    Energy distributions;    High cycle fatigue;    High-cycle loading;    Loading cycles;    Probabilistic approaches;    Probability functions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/116/1/012039/pdf
DOI  :  10.1088/1757-899X/116/1/012039

来源: IOP

【 摘 要 】

The paper describes the mechanism of micro-cracks development in solid structural materials based on the theory of brittle fracture. A probability function of material cracks energy distribution is obtained using a probabilistic approach. The paper states energy conditions for cracks growth at material high-cycle loading. A formula allowing to calculate the amount of energy absorbed during the cracks growth is given. The paper proposes a high- cycle fatigue evaluation criterion allowing to determine the maximum permissible number of solid body loading cycles, at which micro-cracks start growing rapidly up to destruction.