Vibration transmission characteristics of the pyramidal cylinder lattice truss structure.

• A pyramid cylinder lattice truss structure with vibration attenuation is developed. • The impact of cell parameter on vibration transmission characteristics is explored. • The effectiveness of vibration attenuation capability is experimentally assessed. In this work, an innovative cylindrical metamaterial inspired by origami was developed. It featured arrays of pyramid units arranged both circumferentially and axially. The vibration transfer characteristics were determined using numerical method (Frequency Domain Frequency Response Solver of COMSOL) and dynamic testing (Scanning Vibrometer System). The results indicate that the structure effectively attenuates vibrations within the 0–6000 Hz range. Adjusting key geometric parameters can widen or shift vibration attenuation bands toward low–frequencies. Increasing the rod diameter weakens the vibration attenuation capability, while an increase in circumferential and axial angles has a positive impact on the frequency band for vibration attenuation. The significance of this work lies in providing an appropriate method to enhance vibration attenuation for the design and optimization of engineering structures. [Display omitted] [ABSTRACT FROM AUTHOR]