Verification of a simplified analytical method for predictions of ship groundings over large contact surfaces by numerical simulations

摘要: Abstract In this paper, a verification is presented of simplified analytical method for the predictions from numerical simulations structural performance during ship groundings over seabed obstacles with large contact surfaces and trapezoidal cross-section. This was developed by Lin Hong Jorgen Amdahl calculates grounding characteristics, such as resistance distortion energy, double-bottomed ships in shoal accidents. Two finite-element models are presented. One built hold, other hold hull girder also considers sectional properties, mass, added mass hydrodynamic restoring force. The completed comparing horizontal vertical resistances energy between seven numerical-simulation cases set corresponding computed method. results show that obtained close to mean values curves simulations. comparisons prove dissipation-prediction capability valuable. Thus, feasible assessing Furthermore, studies influence motion ascertained affects characteristics. Resistances lessened at end due reduction indentations caused heave pitch motions girder. Finally, new predicting time-consuming complete-ship model applying combination normal ship-motion calculations proposed proven.