Study of a Pendulum-Tuned Mass Damper with Adaptable Cable Length for Skyscraper Structures Safety

The dynamic control of vibrations in skyscrapers is a critical consideration in sustainable building design, particularly in response to environmental excitations such as wind impact or seismic activity. Effective vibration neutralization plays a crucial role in providing safety in the damping/attenuation of high-rise structures. This research introduces an innovative concept for an active vibration damper, which operates on the basis of fluid dynamic transport to adaptively alter a skyscraper’s natural frequency, thereby counteracting resonant vibrations. The damper design consists of interconnected liquid reservoirs, where fluid displacement is actively controlled in response to acceleration signals, enabling real-time precise adaption of the building’s dynamic behaviour. A comprehensive mathematical model based on Lagrangian mechanics outlines the governing equations for this system, capturing the interactions between pendulum motion, fluid flow, and the damping forces necessary to maintain stability. Simulation analyses examine the role of initial excitation frequency and variable damping coefficients, revealing critical insights into optimal damper performance under varied structural conditions. Findings indicate that by fine-tuning fluid flow and damping parameters, the proposed damper effectively mitigates resonance risks, paving the way for sustainable skyscraper design through enhanced structural adaptability and resilience. This adaptable fluid-based damper provides a solution for safe, energy-efficient skyscraper designs, aligning with sustainable architectural practices and advancing future trends in vibration management technology. This study supports the development of safe, future-ready, energy-efficient skyscraper technologies.