Multimedia

A simulation of the swing dynamics using working model 2D. The damping is done using fabric to induce drag on the swing.

Starting from a y-distance of 3 meters, the swing is let go and the plots below show the behavior of the swing that is dampened by air resistance.

Figure 1. Y-position and X-velocity of Seat of 45kg with no Air Resistance

Figure 2. Y-position and X-velocity of Seat of 45 kg with Air Resistance

Figure 2. Y-position and X-velocity of Seat and Person of Combined 135 kg with Air Resistance

Figure 3. WM2D Simulated Amplitude of Three Designs

    Figure 3 shows that adding the spreader bars and modeling the swing in three rigid sections helps in attenuating the amplitude, but the overall effects is small enough to be negligible. Our design of adding springs to either side of the swings also does not do anything to attenuate amplitude.

Simulation Video of 33' double pendulum swing with spreader bar

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