Influence of Raceway Waviness on the Vibration Characteristics

What is it about?

The dynamics model of a 2-degree-of-freedom deep groove ball bearing is established by incorporating the raceway surface waviness model comprising multiple sinusoidal functions superposition. The model is solved using the fourth-order Runge-Kutta method to obtain the vibration characteristics including displacement, velocity, acceleration, and frequency of the bearing. Validation of the model is accomplished through comparison with theoretical vibration frequencies. The influence of the amplitude of waviness of the inner and outer ring raceway surfaces of deep groove ball bearings on the vibration displacement, peak-to-peak vibration displacement and root-mean-square vibration acceleration is analyzed, and the results show that as the amplitude of the inner and outer ring raceway surfaces waviness increases, all the vibration characteristic indexes increase, indicating that the vibration amplitude of the bearings as well as the energy of the waviness-induced shock waveforms increase with the increase of the amplitude of the waviness.

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Photo by Austin Clark on Unsplash

Photo by Austin Clark on Unsplash

Why is it important?

The article titled "Research on the Influence of Raceway Waviness on the Vibration Characteristics of Deep Groove Ball Bearings" explores how the waviness of raceway surfaces affects the vibration behavior of deep groove ball bearings. Using a dynamics model and simulations, the study finds that increased waviness amplitude on the raceway surfaces leads to higher vibration displacement, peak-to-peak vibration, and root-mean-square vibration acceleration. This research is important for improving the performance and reliability of mechanical systems using these bearings by addressing vibration issues caused by surface imperfections. For more details, you can view the article [here](https://journals.viserdata.com/index.php/mes/article/view/13223).