Application of Finite Element Simulation of Ship Collision in Maritime Investigation

摘要

To solve the controversy of the responsibility in ship-ship collision, aship-ship collision model was established on the basis of the collisionaccident of the 'Xin Haixin 818' and ' Guibei fishing 58013', thenusing the nonlinear dynamic analysis software AUTODYN to displayfinite element simulation. In the ship-ship collision simulation,according to the damage extent of the two ships, 'Guibei fishing58013' is regarded as a rigid body in which the overall deformation issmaller , while the larger deformation of 'Xin Haixin 818' is adeformable structure. By setting ship motion parameters on multipleconditions, and choosing a reasonable time steps, the intrusion - yield -destruction process of the hull collision region is restored. Thecomparison of the calculations and the accident scene investigation ofthe crevasse shape and invasion depth reveal that the model predictionis in good agreement. The quantitative reproduction method ofmodeling the collision damage process allows maritime authorities tojudge collision conditions, and provides a new reference for themaritime ascertaining accident responsibility.