Coupling of dynamic reaction forces of a heavy load crane and ship motion responses in waves

Abstract

The conventional approach to dynamic analysis of ship motion response with shipboard operation equipment is usually done by establishing combined equations of motion of the multi-body system. The weakness of such methods is usually associated with the effectiveness of modelling and the simulation efficiency of computing the dynamic ship responses in waves in the time domain. In recent years, time domain simulation of nonlinear ship motion response in waves has become more and more popular. In this paper, we present coupled simulation of a heavy load crane with interactive ship motion responses in waves. The static gravitational forces of the crane system and dynamic excitation forces from the payload are applied to the ship as external forces on varying attack points of the hull during crane operations. Simulation of the crane operation is implemented in the digital twin ship platform and demonstrated meaningful physical behaviours.