A Hybrid FEM-BEM Approach to Structural Fatigue Damage Analysis of Ultra-large Ship Considering Springing Effects [基于FEM-BEM法考虑弹振效应的超大型船舶结构疲劳损伤分析]

作者：Jiao J.^*; Qing C.; Ren H.; Chen C.

来源：Ship Building of China, 2019, 60(2): 117-130.

• Bending-torsional coupling
• Fatigue damage
• Hydroelasticity
• Springing effects
• Ultra-large ship
• Wave loads

To evaluate springing loads acting on ultra-large ships and their effects on structural fatigue damage, a hybrid FEM-BEM algorithm and spectral analysis method is developed. Hull vibration mode characteristics are obtained by 3D finite element analysis. Stress response functions are then obtained by modal superposition of principal coordinates and stress modal shapes are obtained by FEM. Fatigue cumulative damage caused by both wave load and springing load is calculated with spectral analysis method. This study indicates that evaluation of high-frequency springing response and their effects on hull structural fatigue damage with the proposed method is reasonable.

• 单位
  哈尔滨工程大学; 华南理工大学