Experimental Study on Influence of Temperature to Control Performance for Viscoelastic Materials Pounding Tuned Mass Damper

Dehui Ye,Jie Tan,Yabin Liang,Qian Feng

doi:10.3389/fmats.2021.676405

Abstract

The pounding tuned mass damper (PTMD) is a novel passive damper that absorbs and dissipates energy by an auxiliary tuned spring-mass system. Viscoelastic materials are attached to the interface of the limitation collar in the PTMD so that the energy dissipation capacity can be enhanced. Previous studies have successfully demonstrated the effectiveness of PTMD at room temperature. However, in practice, the PTMD may face a broad temperature range, which can affect the mechanical properties of the viscoelastic materials. Thus, the study of vibration control effectiveness of PTMD at different temperatures is of great significance for its practical engineering application. In this paper, a series of experiments were conducted to investigate the performance of a PTMD in a temperature-controlled environment. A PTMD device was designed to suppress the vibration of a portal frame structure and tested across environmental temperatures ranging from –20°C to 45°C. The displacement reduction ratios demonstrated the temperature robustness of the PTMD. Additionally, the numerical results validated the accuracy of the pounding force model and the performance of PTMD.

Highlights

It is nearly impossible for the engineers to fully predict the excitations of structures throughout their entire service lives (Shirai et al, 2019; Cai et al, 2020)
With pounding tuned mass damper (PTMD) control, the displacement of the frame rapidly reduced to a very small level compared to the case without control
The results shows that PTMD has a good temperature robustness

Summary

Introduction

It is nearly impossible for the engineers to fully predict the excitations of structures throughout their entire service lives (Shirai et al, 2019; Cai et al, 2020). Structural vibration control is a safe and economical approach to protect structures against severe disturbances such as expected in natural disasters (Xu et al, 2011; Teng et al, 2016; Wang et al, 2017a; Zhang et al, 2017; Tan et al, 2020). Such control can be accomplished through passive devices such as the pounding tuned mass damper (PTMD). The spring-mass system consumes energy similar to a tuned mass damper (TMD) when the displacement

Methods

Results

Conclusion