Impact of vertical vibrations on human rhythmic jumping

Article Engineering, Civil

Exploring interactions between a human rhythmic jumper and an oscillating structure using experimental force-displacement analysis

R. E. White et al.

Summary: Human rhythmic jumping induces vibrations on civil structures, such as grandstands and footbridges, causing maintenance and serviceability concerns. The dynamic interaction between human jumping and an oscillating surface is complex due to non-smooth, nonlinear, and geometric frequency dependent factors. To investigate this, a timber beam was constructed to simulate a grandstand's cantilever tier, and measurements of accelerations, displacements, and contact force were acquired. The study found that the leg spring stiffness of jumpers varies with jumping frequency, and different nonlinear models are needed to characterize jumping dynamics on stationary surfaces and oscillating surfaces.

STRUCTURES (2023)

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Article Acoustics

Parametric exploration of a simple model of human jumping on an oscillating structure

R. E. White et al.

Summary: The study investigates the interactions between human and civil structures during rhythmic jumping, revealing the relationship between structural vibrations and human jumping behaviors. It explores stable periodic motions and chaotic behaviors of human jumping, providing insights into the difficulty of jumping around the natural frequency of a supporting structure.

JOURNAL OF SOUND AND VIBRATION (2021)

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Article Engineering, Civil