Code for symbolic mathematical analysis, simulations and processing of experimental results related to Inerter-based Building Mass Damper

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Título

Code for symbolic mathematical analysis, simulations and processing of experimental results related to Inerter-based Building Mass Damper

Autor(es)

Garrido, Carlos Hernán; Domizio, Martin Norberto; Curadelli, Raul Oscar; Ambrosini, Ricardo Daniel

Afiliación(es) del/de los autor(es)

Garrido, Carlos Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Area Dinamica Experimental ; Instituto de Mecanica Estructural y Riesgo Sismico ; Facultad de Ingenieria ; Universidad Nacional de Cuyo;
Domizio, Martin Norberto. Area Dinamica Experimental ; Instituto de Mecanica Estructural y Riesgo Sismico ; Facultad de Ingenieria ; Universidad Nacional de Cuyo; . Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Curadelli, Raul Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Area Dinamica Experimental ; Instituto de Mecanica Estructural y Riesgo Sismico ; Facultad de Ingenieria ; Universidad Nacional de Cuyo;
Ambrosini, Ricardo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Area Dinamica Experimental ; Instituto de Mecanica Estructural y Riesgo Sismico ; Facultad de Ingenieria ; Universidad Nacional de Cuyo;

Resumen

The tuned mass damper (TMD) is a classical device interesting for reducing deformations between DOFs without physically connecting them. However, it has a practical limit due to the increase in mass required for improving its performance. A building mass damper (BMD) uses mode coupling to make the upper substructure of a chain-like structure behave as a TMD for the lower substructure, which avoids adding mass to the structure. Unfortunately, near-uniform chain-like structures require isolation of the upper substructure for tuning the BMD, making it impractical for retrofitting existing structures since it is an inseries intervention. This paper proposes and evaluates using an inerter, instead of isolating the upper substructure, to control vibrations through mode coupling in a chain-like structure. From an analytical and numerical study, it was found a significant reduction of lower substructure deformations by implementing solely an inerter and a damper in the upper substructure. The inerter-based approach showed similar performance to the classical BMD with the advantage of being an in-parallel intervention. Therefore, this approach constitutes a practical retrofit to improve the dynamic behavior of existing structures with excessive deformations in a lower substructure whose functionality or esthetics would be compromised if control devices were installed in it. The Building Mass Damper is a design concept for vibration control of structures where the upper substructure effectively behaves as a Tuned Mass Damper (TMD) for the lower one. Unfortunately, its tuning usually requires softening or partial isolation of the upper substructure; limiting its applicability for retrofitting. The recently proposed Inerter-based Building Mass Damper (IBMD) is an in-parallel intervention on the upper substructure with an inerter and a damper. Thus, the inerter allows correct Tuning, the upper substructure provides the Mass, and the damper adds the Damping. Therefore, a very large mass-ratio TMD is obtained with marginal additional weight and minimal practical impact. In the present work, experimental tests supported by numerical simulations on a small two-story structure model quantitatively confirm the effectiveness of the IBMD. Besides, an innovative compliant mechanism design is introduced for the implementation of the translation-rotational converter that drives the inerter; which has minimal backlash and friction, still allowing large strokes. The experiments involved a frictional damper, which performed comparable to a linear viscous damper considered in the simulations.

Año de publicación

2024

Idioma

inglés

Formato (Tipo MIME)

application/octet-stream
application/vnd.rar

Clasificación temática de acuerdo a la FORD

Ingeniería mecánica

Condiciones de uso

Acceso restringido por un tiempo determinado. Estará disponible en: bajo licencia Creative Commons https://creativecommons.org/licenses/by-nc-sa/2.5/ar/

Repositorio digital

CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas

Identificador de proyecto

Consejo Nacional de Investigaciones Científicas y Técnicas/

Identificador de proyecto

Ministerio de Ciencia, Tecnología e Innovación Productiva. Agencia Nacional de Promoción Científica y Tecnológica. Fondo para la Investigación Científica y Tecnológica/

Identificador de proyecto

Universidad Nacional de Cuyo/