Experimental study on vibration control performance of TMD-STF damper

Abstract

A tuned mass damper (TMD) using shear thickening fluid (STF) as an energy dissipation medium is designed and manufactured. In addition, a TMD incorporating silicone oil (TMD-Si49) is fabricated to compare and analyze the vibration control performance of TMD-STF. Free vibration, forced vibration, and random excitation tests are conducted on a single degree of freedom (SDOF) structure model equipped with TMD-STF and TMD-Si49, respectively. The displacement and acceleration response of the SDOF model are recorded to analyze the vibration control performance of TMD-STF and TMD-Si49 under different load conditions. The results of the free vibration test show that TMD-STF affects the coupling damping ratio of the test model, exhibiting time-varying damping characteristics, but does not impact the coupling frequency ratio. In the forced vibration test, TMD-STF effectively expands the effective frequency range of vibration control performance by approximately 17.0% compared to TMD-Si49. The random excitation test demonstrates that TMD-STF exhibits significantly improved control of acceleration response rather than displacement control. The research findings on TMD-STF provide novel insights for vibration control in engineering structures.

Optimized design of silicone oil torsional damper for diesel generator

“…These new dampers utilize advanced materials and designs for greater efficiency and wider applicability. For example ， Centrifugal pendulum vibration dampers [6], Magnetorheological vibration dampers [7][8], Tuned wedge dampers [9], Tuned mass dampers [10], and others. Despite the significant advances in the field of vibration control made by these new vibration dampers, however, there are still some challenges to overcome in terms of the complexity of damper structure, performance stability, and durability.…”