Human-Structure Interaction during jumping on Rectangular Plates

Resumo

In this work a Spring-Mass-Damping system (SMD) of one degree of freedom is used to represent the
human-structure interaction during jumping on a thin rectangular plate under a time-dependent base excitation.
The plate is considered simply supported and its strains relations are described by the Von Karman nonlinear
theory. A parametric analysis using the piecewise-smooth contact dynamics theory is performed to study the
influence of loss of contact during the flight phase of jumping cycles. The different stable jumping strategies of
the human body for incremental values of the human damping ratio are found. Obtained results show that,
depending on the values assumed for the biodynamic parameter, chaotic responses, hysteresis and coexisting
attractors can be observed in the bifurcation diagrams when the human degree of freedom is controlled.