Vibration isolation of nonlinear honeycomb sandwich beams

Honeycomb sandwich beams are one of the most basic engineering structures and are highly susceptible to external excitation, which may cause amplified vibration phenomena. In response to this concern, support boundary measures with superior elastic properties are implemented to effectively mitigate transverse vibration interference. This paper explores the influence of beam geometry nonlinearity on structural vibration and introduces the concept of vibration transferability. The multi-mode resonant frequency of the elastic support boundary beam is analyzed. The significant impact of support stiffness symmetry on vibration response has been explored. Use approximate analytical methods and numerical calculation methods to mutually verify the research results. Observe how different parameters affect the steady-state response. The transmission law of multi-mode resonance response on elastic sandwich beams is analyzed. Compared with the vibration transmission properties of rigid boundaries, it has been confirmed that elastic supported boundaries have significant advantages in vibration isolation performance. Compared to amplitude, vibration transferability can more accurately depict vibration characteristics in high-order resonance states. This article will further explore the isolation performance of honeycomb sandwich beams and objectively reflect their isolation effect through the vibration transmission rate, thus helping to improve the overall seismic performance of engineering structures.