An energy principles based model for fatigue crack growth prediction
| Autor: | Nian-Zhong Chen, Ankang Cheng, Yongchang Pu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Strain energy release rate
Materials science Mechanical Engineering 02 engineering and technology Mechanics Paris' law 021001 nanoscience & nanotechnology Load cycle Industrial and Manufacturing Engineering Strain energy 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Modeling and Simulation Stored energy Fracture (geology) General Materials Science 0210 nano-technology Energy (signal processing) Test data |
| Zdroj: | International Journal of Fatigue. 128:105198 |
| ISSN: | 0142-1123 |
| Popis: | An energy principles based model is developed for fatigue crack growth (FCG) prediction. According to the equilibrium relationship between released strain energy and irrecoverable stored energy accumulated along the length of fracture process zone (FPZ), the FCG rate is calculated through dividing the accumulated stored energy by the elementary fracture released energy in each load cycle. The elementary fracture released energy is determined from the cyclic strain energy release rate. The accumulated stored energy is obtained by integrating the crack-tip stresses within the FPZ length. Comparison between model prediction and FCG test data is made and good agreement is observed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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