A Fourier Series-Based Multi-Point Excitation Model for Crowd Jumping Loads

Crowd jumping loads are often simplified to a single-point excitation in the existing Fourier series-based models, most of which lack data support crowd experiments. A multi-point model for is herein developed, where two parameters, frequency, and time lag shift, selected quantify synchronization. After verification 3D motion capture technology, probability distributions frequency shift modeled based on experiment, trajectories reflective markers 48 test subjects were simultaneously recorded by technology. Through repeated sampling, load each person simulated. This could offer useful method evaluating vibration performance assembly structures like grandstands, gymnasiums, concert venues.