Optimum design and experimental study of multiple tuned mass dampers with limited stroke

2010 ◽  
Vol 39 (14) ◽  
pp. 1631-1651 ◽  
Author(s):  
Chi-Chang Lin ◽  
Jer-Fu Wang ◽  
Chien-Hsun Lien ◽  
Hung-Wei Chiang ◽  
Chih-Shiuan Lin
Keyword(s):  
Experimental Study ◽  
Optimum Design ◽  
Tuned Mass Dampers ◽  
Multiple Tuned Mass Dampers

Experimental Study on Utilization FGD Byproducts in Building Bricks

2010 ◽  
Vol 150-151 ◽  
pp. 753-757 ◽  
Author(s):  
Xiong Hao Li ◽  
Yong Jie Xue ◽  
Min Zhou
Keyword(s):  
Experimental Study ◽  
Compressive Strength ◽  
Optimum Design ◽  
Power Plants ◽  
Pilot Scale ◽  
Mixture Composition ◽  
Technical Requirement ◽  
Do No Harm ◽  
Maximum Compressive Strength ◽  
Scale Experiment

This paper discussed the feasibility of unburned and non-autoclaved, steam cured bricks prepared by FGD byproducts from coal-fired power plants. The results show that FGD byproduct, aggregates, cementious materials and water could be used to prepare bricks during the process of stir and compaction under natural cure and steam cured condition. S4 and Z2 are the optimum design mixture composition. The maximum compressive strength and saturation coefficient are 28.7 MPa and 96.7%. FGD byproducts do no harm to environment and a pilot-scale experiment demonstrates that bricks made with FGDA can meet the MU10 level bricks technical requirement.

Oppositely oriented series multiple tuned mass dampers and application on a parallel machine tool

2022 ◽  
Vol 163 ◽  
pp. 108196
Author(s):  
Wenshuo Ma ◽  
Xiaoliang Jin ◽  
Jingjun Yu ◽  
Yiqing Yang ◽  
Xinjun Liu ◽  
...  
Keyword(s):  
Machine Tool ◽  
Parallel Machine ◽  
Tuned Mass Dampers ◽  
Parallel Machine Tool ◽  
Multiple Tuned Mass Dampers

Adaptive multiple tuned mass dampers based on modal parameters for earthquake response reduction in multi-story buildings

2016 ◽  
Vol 20 (9) ◽  
pp. 1375-1389 ◽  
Author(s):  
Mohammad Sabbir Rahman ◽  
Md Kamrul Hassan ◽  
Seongkyu Chang ◽  
Dookie Kim
Keyword(s):  
Tuned Mass Damper ◽  
Primary Objective ◽  
Modal Parameters ◽  
Earthquake Response ◽  
Tuned Mass Dampers ◽  
Mass Damper ◽  
Modal Mass ◽  
Story Building ◽  
Selection Of ◽  
Multiple Tuned Mass Dampers

The primary objective of this research is to find the effectiveness of an adaptive multiple tuned mass damper distributed along with the story height to control the seismic response of the structure. The seismic performance of a 10-story building was investigated, which proved the efficiency of the adaptive multiple tuned mass damper. Structures with single tuned mass damper and multiple tuned mass dampers were also modeled considering the location of the dampers at the top of the structure, whereas adaptive multiple tuned mass damper of the structure was modeled based on the story height. Selection of the location of the adaptive multiple tuned mass damper along with the story height was dominated by the modal parameters. Participation of modal mass directly controlled the number of the modes to be considered. To set the stage, a comparative study on the displacements and modal energies of the structures under the El-Centro, California, and North-Ridge earthquakes was conducted with and without various types of tuned mass dampers. The result shows a significant capability of the proposed adaptive multiple tuned mass damper as an alternative tool to reduce the earthquake responses of multi-story buildings.

scholarly journals Robust Optimum Design of Multiple Tuned Mass Dampers for Vibration Control in Buildings Subjected to Seismic Excitation

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Luciara Silva Vellar ◽  
Sergio Pastor Ontiveros-Pérez ◽  
Letícia Fleck Fadel Miguel ◽  
Leandro Fleck Fadel Miguel
Keyword(s):  
Vibration Control ◽  
Structural Parameters ◽  
Simultaneous Optimization ◽  
Tuned Mass Dampers ◽  
Structural Dynamic ◽  
Energy Devices ◽  
Promising Tool ◽  
Optimization Methodology ◽  
Robust Optimum Design ◽  
Multiple Tuned Mass Dampers

Passive energy devices are well known due to their performance for vibration control in buildings subjected to dynamic excitations. Tuned mass damper (TMD) is one of the oldest passive devices, and it has been very much used for vibration control in buildings around the world. However, the best parameters in terms of stiffness and damping and the best position of the TMD to be installed in the structure are an area that has been studied in recent years, seeking optimal designs of such device for attenuation of structural dynamic response. Thus, in this work, a new methodology for simultaneous optimization of parameters and positions of multiple tuned mass dampers (MTMDs) in buildings subjected to earthquakes is proposed. It is important to highlight that the proposed optimization methodology considers uncertainties present in the structural parameters, in the dynamic load, and also in the MTMD design with the aim of obtaining a robust design; that is, a MTMD design that is not sensitive to the variations of the parameters involved in the dynamic behavior of the structure. For illustration purposes, the proposed methodology is applied in a 10-story building, confirming its effectiveness. Thus, it is believed that the proposed methodology can be used as a promising tool for MTMD design.

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