Vibration and Bandgap Characteristics Analysis of Pyramid Cylinder Lattice Skeleton Structure

Lattice structures have attracted significant scholarly attention due to their exceptional mechanical properties, including lightweight characteristics and high strength. Their multifunctionality, such as energy absorption and vibration reduction, adds to their versatility. While extensive research has been conducted on the vibration reduction performance of plate‐type, shell‐type, and truss‐type lattice structures, studies on cylindrical lattice structures are comparatively limited. To achieve broadband vibration suppression in cylindrical structures, this study proposes a novel cylindrical structure based on pyramid cells. The vibration suppression performance and the bandgap formation mechanism of the pyramid cylindrical lattice skeleton structure are examined, with a quantitative analysis of the influence of structural parameters on vibration suppression performance using normalized indicators. Results indicate that the structure demonstrates multiple bandgaps within the 0–1500 Hz range, exhibiting substantial vibration attenuation capabilities. Additionally, adjusting parameters enables the bandgap to shift toward lower frequencies. Finally, the experimental verification of finite element model has been performed by comparing the vibration transmission curves with a maximum relative error of −7.48% at the resonance peak. This work offers valuable insights for the application of cylindrical lattice structures in vibration and noise control fields.