Hybrid system of base-isolated structures with tuned tandem mass damper-inerters considering internal friction

Journal of Building Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 111853 - 111853

Published: Jan. 1, 2025

Language: Английский

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Multi-directional broadband vibration control of marine pipe systems using mistuned cyclic symmetric structure as dynamic vibration absorbers

Ocean Engineering, Journal Year: 2025, Volume and Issue: 320, P. 120272 - 120272

Published: Jan. 10, 2025

Language: Английский

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Bowstring-type inerter negative stiffness damper for vibration control of slender towers

Engineering Structures, Journal Year: 2024, Volume and Issue: 308, P. 118037 - 118037

Published: April 16, 2024

Language: Английский

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Multi-dimensional vibration control for offshore floating platform synergizing built-in wave energy converter with decoupled power take-offs

Ocean Engineering, Journal Year: 2025, Volume and Issue: 322, P. 120450 - 120450

Published: Jan. 27, 2025

Language: Английский

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Optimal multiple tuned mass dampers for monopile supported offshore wind turbines using Genetic Algorithm

Ocean Engineering, Journal Year: 2024, Volume and Issue: 298, P. 117356 - 117356

Published: March 1, 2024

Language: Английский

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Concise analytical solutions to negative‐stiffness inerter‐based DVAs for seismic and wind hazards considering multi‐target responses

Earthquake Engineering & Structural Dynamics, Journal Year: 2024, Volume and Issue: 53(12), P. 3820 - 3858

Published: July 26, 2024

Abstract Practical engineering structures are subjected to hazardous seismic‐ and wind‐ induced vibrations during their lifetime. They should be designed based on capacity serviceability targets. Similarly, the design of dynamic vibration absorbers (DVAs) also meet multiple requirements. However, most current analytical approaches a single‐target response may lead cumbersome expressions for complicated scenarios. To address these issues, concise solutions negative‐stiffness inerter‐based DVAs proposed in this paper. Firstly, generic optimization approach H ‐norm considering different targets displacement, velocity, acceleration, transmissibility, is established. Subsequently, derived Taylor's expansion by ignoring higher‐order items equivalent mass ratio. Finally, application scope effectiveness discussed. Consequently, resulting proved located close pareto fronts multi‐target results. have shown superior performances than conventional controlling structural indicators practical five‐story steel frame case under wind seismic hazards. Conclusively, simple expression reveal excellent performances, which can provide guidance insights optimal DVAs.

Language: Английский

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Tuning of vibration absorbers by an effective modal coupling factor

International Journal of Mechanical Sciences, Journal Year: 2024, Volume and Issue: 268, P. 109009 - 109009

Published: Jan. 4, 2024

The simplest family of vibration absorbers comprise inertia absorbers, with an inerter in series a parallel or dashpot-spring element, and stiffness for which spring are interchanged. Vibration tuned to structure's critical resonance, scalar structure-absorber equations derived from expansion modes the absorber either free clamped state. It is demonstrated that influence non-targeted residual consistently represented by effective modal coupling factor (EMCF), evaluated as relative difference between natural frequencies squared. While closely related shunted electromechanical transducers, use EMCFs determines entirely new direction tuning mechanical on flexible structure. For EMCF represents apparent mass ratios also account modes. Therefore, analytical expressions can be obtained frequency response functions, pole-placement method governing parameter. accuracy proposed validated simple numerical example, shows used directly damping structures, provided included correctly compensate inherent interaction.

Language: Английский

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Lightweight Design of Vibration Control Devices for Offshore Substations Based on Inerters

Sustainability, Journal Year: 2024, Volume and Issue: 16(8), P. 3385 - 3385

Published: April 18, 2024

Offshore substations are important sustainable power infrastructures subjected to strong vibrations induced by complex environmental excitations such as wind, waves, and currents. To protect the structures expensive facilities, lightweight vibration control devices highly desirable in offshore substations. With a high-performance energy dissipation device, inerter, conventional Tuned Mass Damper (TMD) is upgraded for control. The optimal parametric design performance evaluation of single- double-tuned performed based on H-norm criteria. corresponding equivalent mass ratios both summarized formulated systematical manner. Finally, presented formulas, ratios, performances validated analyses practical substation. results show that inerter-based can be effectively TMD, with ratio. device could save 25% compared TMD. Inerter (TMDI), responsibility shared dual-end connected inerters. Meanwhile, Viscous (TVMD) completely replaces block an which has superior performance.

Language: Английский

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Control of nonlinear offshore platforms using semi-active tuned mass damper inerter under combined wave and wind loads

Applied Ocean Research, Journal Year: 2025, Volume and Issue: 154, P. 104428 - 104428

Published: Jan. 1, 2025

Language: Английский

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Enhanced vibration control on transmission towers with rotational inertial double tuned mass dampers for seismic and wind hazards

Structures, Journal Year: 2025, Volume and Issue: 73, P. 108326 - 108326

Published: Jan. 30, 2025

Language: Английский

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