The simulator demonstrates how coupling a small, precisely tuned secondary mass-spring-damper system to a primary structure reshapes its resonant response, splitting one dangerous resonant peak into two smaller, more manageable peaks, and how mistuning the auxiliary frequency or choosing a poor mass ratio weakens or even worsens that suppression.
Set the primary structure's mass, stiffness, and damping to define its natural sway frequency, then choose the auxiliary mass size and tune its spring stiffness relative to that target frequency. Sweep the forcing frequency to watch the live frequency response curve reshape, compare peak sway amplitude with the damper enabled versus disabled, and experiment with deliberately mistuning the auxiliary frequency or changing the damping coefficient to see suppression degrade.
Sliders for primary structure mass, stiffness, and inherent damping; auxiliary mass size and mass ratio; auxiliary spring stiffness expressed as a tuning ratio relative to the primary natural frequency; damper coefficient between the two masses; forcing frequency sweep; and a toggle to enable or disable the tuned mass damper for direct before-and-after comparison.
Taipei 101's 660-metric-ton steel pendulum damper is tuned so precisely that during a strong 2015 typhoon it was recorded swinging roughly a meter from center, visibly absorbing wind energy that would otherwise have translated into far larger, uncomfortable sway at the building's occupied floors.
The simulator demonstrates how coupling a small, precisely tuned secondary mass-spring-damper system to a primary structure reshapes its resonant response, splitting one dangerous resonant peak into two smaller, more manageable peaks, and how mistuning the auxiliary frequency or choosing a poor mass ratio weakens or even worsens that suppression.
The simulator demonstrates how coupling a small, precisely tuned secondary mass-spring-damper system to a primary structure reshapes its resonant response, splitting one dangerous resonant peak into two smaller, more manageable peaks, and how mistuning the auxiliary frequency or choosing a poor mass ratio weakens or even worsens that suppression.
Set the primary structure's mass, stiffness, and damping to define its natural sway frequency, then choose the auxiliary mass size and tune its spring stiffness relative to that target frequency. Sweep the forcing frequency to watch the live frequency response curve reshape, compare peak sway amplitude with the damper enabled versus disabled, and experiment with deliberately mistuning the auxiliary frequency or changing the damping coefficient to see suppression degrade.
Taipei 101's 660-metric-ton steel pendulum damper is tuned so precisely that during a strong 2015 typhoon it was recorded swinging roughly a meter from center, visibly absorbing wind energy that would otherwise have translated into far larger, uncomfortable sway at the building's occupied floors.