Abstract
Camshaft usually vibrates violently in swing grinding due to its complex contour, and the dam** performance of device directly affects the surface quality of camshaft. Aiming at the problem that the traditional vibration dam** device has been forced by installation constraints and it is difficult to control the vibration frequency in a specific range, the vibration dam** structure for camshaft journal and grinder tailstock based on the local resonance bandgap (LRBG) mechanism is carried out in this paper, respectively. On the basis of the vibration data obtained from the experimental analysis, the corresponding finite element model is established, the resonant bandgap characteristics and the bandgap influence rules of each system structure are discussed. Comparing the dam** performance of the system before and after vibration reduction based on the optimized vibration reduction model obtained from the influence rules, the vibration reduction effect of the local resonance (LR) structure designed in this paper is very significant. Compared with the homogeneous structure, the dam** performance at the journal and tailstock is improved by 31.6% and 89.3% respectively. The design achieves the goal that controlling large wavelength with small size, which provides a good application prospect for the local resonance phononic crystals (LRPCs) in the vibration reduction field of camshaft swing grinding.
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Funding
This study was supported by General project of natural science research of Institutions of Higher Education of Jiangsu Province of China (21KJB510016) and the National Natural Science Foundation of China (no. 62203193).
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Shi, X.N., Liu, H.Y., Zhao, L. et al. Research on the Vibration Reduction Design of Camshaft Swing Grinding Based on Local Resonance Mechanism. Mech. Solids 58, 922–938 (2023). https://doi.org/10.3103/S0025654423700103
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DOI: https://doi.org/10.3103/S0025654423700103