Acceleration response signals of a floating platform

As an assessment tool for medium and large ship equipment, it is crucial to carry out research on the impact dynamics characteristics under the action of underwater explosive load on the offshore floating platform and establish an impact environment similar to that of real ship experiments for the impact-resistant assessment of ship equipment.

This paper carries out an impact test of a floating platform under underwater explosion. The impact response signals indicate that the kinematic evolution of the dynamic system is random, disordered, and unpredictable, with spatiotemporal chaos characteristics. For the impact response system with spatiotemporal chaos characteristics, the non-stationary impact response signals are blocked, the continuous time variables are discretized, and the data orbits of the acceleration response evolving in the two-dimensional phase space are portrayed by the phase-space reconstruction method, and the mapping function of the system kinematic evolution is established, and the dynamical behaviors and nonlinear characteristics of the system are characterized by the control parameter u of the mapping function.