Application of tuned-mass dampers to the control of floor vibrations

G M Almeida,C E N Mazzilli

doi:10.1590/s1983-41952018000200009

Abstract

Abstract This article proposes a standardized solution for the application of Tuned-Mass Dampers to the control of floor vibrations based on the characteristics of the acting loads associated to human usage and the characteristics of the most common structures of the contemporary engineering practice. In order to simplify its usage by the technical community, the tuning is proposed through the selection of pre-determined components for the assembly of the TMD and the choice of disposition and spacing of the mechanisms. The system efficacy is then verified through the computational case study of a floor before and after the application of the mechanisms.

Highlights

This article proposes a standardized solution for the application of Tuned-Mass Dampers to the control of floor vibrations based on the characteristics of the acting loads associated to human usage and the characteristics of the most common structures of the contemporary engineering practice
Tuned-Mass Dampers, TMD’s, are highly efficient systems utilized in the passive control of structural vibrations
Its operational principle is based on the idea that the TMD resonates in an excitation frequency that coincides to a vibration mode of the structure, dissipating the energy that would otherwise act unchecked

Summary

Introduction

Tuned-Mass Dampers, TMD’s, are highly efficient systems utilized in the passive control of structural vibrations They basically consist of an inertial element connected through a damper and a spring to a system to alter its dynamic characteristics. Its operational principle is based on the idea that the TMD resonates in an excitation frequency that coincides to a vibration mode of the structure, dissipating the energy that would otherwise act unchecked. This characteristic of the TunedMass Dampers, demands that they are tuned to each system, reducing its employability in the contemporary civil engineering practice, which remains reluctant about adopting dynamic concepts in the design of structures. The development of a set of standardized Tuned-Mass Dampers is proposed, as well as a simplified design guide that will allow the proper tuning for slabs of different sizes, thickness and usages, in a way that facilitates its usage in the contemporary practice

Justification

(3) 2. Methodology

Case analysis

Results and discussions

Conclusion

Bibliographic References