高速三体船横向极限强度研究

摘要

Cross bridge structure of the high speed trimaran is easily be destroyed under the ultimate transverse wave load.Therefore,it is essential have a study on transverse ultimate bearing capacity of trimaran.The nonlinear FEA numerical method is adopted in this paper,the material nonlinearity,large strain and follower force are considered,and the reasonable element type and size of mesh are used.The transverse loads including transverse torsional moment and transverse bending moment.The transverse bending and transverse torsional ultimate strength of a high speed trimaran are analyzed.Through the analysis of sensitive components affecting the transverse ultimate strength,it is confirmed that transverse bulkheads have the most significant result on improving of the transverse ultimate strength.%高速三体船连接桥在极端载荷下易发生破坏.文中运用可模拟材料非线性、大应变和追随力的非线性有限元法,计算时使用了合适的单元类型和网格尺寸.横向载荷包括横弯弯矩和横扭弯矩,对横弯和横扭极限强度进行分析.对影响横向强度的敏感性构件进行分析,证实横舱壁对提高横向极限强度的贡献最大.