Finite Element Analysis of Blade Width and Resonance Occurrence in Impeller of Centrifugal Blower

Abstract

This study focuses on determining the optimal blade thickness for an impeller through modal simulation analysis. Critical parameters such as principal stress, various modes of deformation, total deformation, natural frequency, and resonance are investigated to assess the impeller's performance. The findings indicate that a blade thickness of 7mm consistently maintains steady operating conditions without encountering resonance phenomena. This stability ensures smooth pumping and prolongs the impeller's lifespan. Moreover, the natural frequency analysis highlights the blade thickness of 7mm as favourable for maintaining stability during operation. Comparatively, blade thicknesses of 6mm and 7mm exhibit minimal vibrations and are conducive to stable operation. However, a blade thickness of 8mm presents resonance issues, indicating a suboptimal design choice. Furthermore, observing higher natural frequencies in the 7mm blade thickness configuration underscores its suitability for efficient pumping. This suggests that adjustments in the design parameters, such as blade thickness, are crucial for optimizing the impeller's performance and ensuring stable operation. In summary, the study emphasizes the importance of selecting an appropriate blade thickness, with the analysis highlighting 7mm as the preferred choice for achieving smoother pumping and operational stability. These insights provide valuable guidance for enhancing the design and performance of impellers in various industrial applications.