Lifeline structures such as hospital buildings need to be specifically designed that they experience reduced vibrations when subjected earthquake excitations because it will difficult vacate under the event of any earthquake. Therefore, ensure operational condition in an existing building, present study utilizes flexible unbonded fiber-reinforced elastomeric isolators (UFREIs) for its seismic i...

Abstract Designing vibrating systems is challenging due to component interaction. One approach reduce the resulting complexity top-down design where requirements on components are formulated such that overall system achieves goal. Previous work showed how derive quantitative and solution-neutral of a system, expressed as permissible ranges impedance. This adapts methodology practical use case p...

This study presents a new method to find the optimal control forces for active tuned mass damper. The method uses three algorithms: discrete wavelet transform (DWT), particle swarm optimization (PSO), and linear quadratic regulator (LQR). DWT is used to obtain the local energy distribution of the motivation over the frequency bands. PSO is used to determine the gain matrices through the online ...

In 1972, J.T.P. Yao introduced the modern control theory into vibration control of civil structures (Yao, 1972), which started the new era of research on structural active control in civil engineering field. During the development of nearly 40 years, Active Mass Driver/Damper (AMD) control, with the better control effect and cheaper control cost, has taken the lead in various active control occ...

The present paper studies the performance of a tuned mass damper (TMD) installed in 183 m tall chimney located at edge wake shed by another chimney. Numerical and experimental results are available. For simulations, wind action is considered solving several 2D flow problems on selected number horizontal planes, transverse direction to stacks. On such Navier-Stokes equations solved estimate flui...

Significant structural responses pose potential hazards to the safe operation of floating offshore wind turbines (FOWTs). To effectively mitigate motion FOWTs using conventional passive vibration control methods such as tuned mass damper (TMD) and multiple (MTMD), an optimization method for TMD MTMD in a barge-type FOWT is proposed this study. A simplified dynamic model barge with MTMD, which i...

Passive systems are preferred tools for seismic control of buildings challenged by probabilistic nature of the input excitation. However, other types of uncertainty still exist in parameters of the control device even when optimally tuned. The present work concerns optimal design of multiple-tuned-mass-damper embedded on a shear building by a number of meta-heuristics. They include well-known g...

In metal sheet processing for automotive application, it is crucial to guarantee high robot dynamics reduced cycle times and adequate components accuracy be competitive in the market. Since two aspects are closely inversely related, problem becomes challenging. After first cutting tests, Cartesian Robot prototype displayed insufficient dimensional when undergoing accelerations. The solution her...

Research interest to provide a mechanical solution for involuntary tremors is increasing due the severe side effects caused by medications used lessen its symptoms. This paper deals with design of cantilever-type tuned mass damper (TMD) prove effectiveness passive controllers in reducing tremor’s vibrational signals transmitted muscles hand segment. TMD tested on an experimental arm, reflecting...

The tuned mass damper (TMD) is widely used for vibration mitigation, especially in high-rise buildings where significant soil-structure interaction (SSI) effects are usually involved. This creates a need to consider SSI TMD design. In this work, novel design framework systems with proposed. For response evaluations, structure-TMD modeled as two-degrees-of-freedom (2DOF) system, standing on rigi...