Influence of Mass Dampers Based on the Human Walking Gait on the Dynamic Behavior of RC Frame
摘要
This study aims to incorporate human gait patterns into the working mechanism of mass dampers for improving torsional resistance. Unlike conventional TMDs, which lack torsional resistance, this study mimics human arm-swing motion to create synchronized opposing masses that naturally balance torsional forces in asymmetric RC frames. This approach has not been reported in prior structural control literature The scope includes evaluating fixed, rotational. Human gait is characterized by coordinated movements of the upper and lower body, including arm-swing motions that can be exploited in damper design. A partially infilled RC frame simulating asymmetry was analyzed and tested both analytically using SAP2000 and experimentally. A demo model that had dual mass dampers with opposing motions, like arm swings, was built to test this approach. The results of the mass dampers of rotational capacity as well as fixed capacity with equal masses of 10, 20, and 25 kg on both sides were analyzed in SAP 2000 for 140, 160 and 180 rpm. It was found that the natural frequency if frame was 17.69 Hz and relative displacement shows the lesser value when operating frequency was nearer to its natural frequency. The results indicated 25 kg dampers with rotational capacity provided optimal performance by minimizing relative displacement, reducing torsion and results in stable acceleration. It was seen that there is a significant torsional resistance and reduced displacement in the damped frame compared to the undamped condition. This result validates the integration of human gait dynamics into mass damper systems, thus enhancing their effectiveness in mitigating torsional effects in asymmetric structures.