Research on the Damage Experiment Model Design and Metal Magnetic Memory Testing of Wind Turbine Tower in Service
| Autor: | Qin Lv, Benli Wan, Bin Hu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Wind power
business.industry Computer science 05 social sciences 02 engineering and technology Structural engineering Turbine Finite element method Stress (mechanics) 020303 mechanical engineering & transports 0203 mechanical engineering 0502 economics and business Empirical formula business Tower 050203 business & management Groove (music) Stress concentration |
| Zdroj: | 2020 IEEE 4th Conference on Energy Internet and Energy System Integration (EI2). |
| DOI: | 10.1109/ei250167.2020.9346770 |
| Popis: | In this paper, the prototype of a massive wind turbine tower is simplified into a mechanical test model by using the similarity theory, and the relevant similarity coefficient is derived. On this basis, the stress concentration of two typical defects, such as groove and hole, is simulated to simulate the early damage under different wind loads. The stress distribution of the tower model under different loads is calculated by the finite element method (FEM). Meanwhile, a particular metal magnetic memory testing device is made to detect the stress concentration area of the tower. The experimental results are consistent with the simulation results, which verifies the effectiveness of the magnetic method to detect the early damage of the tower. Finally, the empirical formula and vector synthesis method are used to analyze the magnetic memory signal, and the evaluation index of stress concentration is proposed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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