Analysis of the gas-solid coupling horizontal vibration response and aerodynamic characteristics of a high-speed elevator

• Autores: Mingxing Liu, Zhe Yang, Lixin Liu, Qing Zhang, Ruojun Zhang
• Localización: Mechanics based design of structures and machines, ISSN 1539-7734, Vol. 51, Nº. 6, 2023, págs. 3350-3371
• Idioma: inglés
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• Resumen

  • To accurately explore the horizontal vibration response and aerodynamic load variation law of high-speed elevator with gas-solid interaction coupling in real environment, a mathematical and a three-dimensional calculation model of the coupling vibration of the shaft airflow and car body were established based on the arbitrary Lagrange-Euler method and the finite volume method. Additionally, the rationality of the coupling calculation model was verified by taking the working condition of 7 m/s as the test object. Then, the aerodynamic load and the horizontal vibration acceleration of the car body for different speed conditions were solved using unidirectional and bidirectional fluid-structure coupling numerical simulation methods, and the influences of the two coupling methods on the horizontal vibration response of the car body were compared and analyzed. The results showed that the aerodynamic load on the car body fluctuated greatly due to its horizontal vibration under the bidirectional coupling effect, and the peak value of the fluctuation was proportional to the second power of the running speed. When the running speed was greater than 7 m/s, the influence of the bidirectional coupling on the horizontal vibration of the car body became more prominent. The typical digital characteristics of the vibration acceleration increased by 129.70%–226.84%, and the maximum amplitude of the low-frequency vibration of the car body increased significantly. This study provides an effective method for the analysis of the gas-solid coupling characteristics of a high-speed elevator, and it provides theoretical guidance for the development of an optimal vibration damper for a high-speed elevator.