纵桁架对船体结构强度的影响研究

The Influence of the Longitudinal Trusses on the Ship Structural Strength

基于有限元分析方法分别对只设支柱、设双(单)向纵桁架和设纵舱壁3种结构形式的船型进行了总纵弯曲计算,并与等值梁理论的计算结果进行比较,得出了纵向桁架对船体梁上下翼板弯曲应力的分布、船体挠度及对船体横强度的影响程度。计算采用ANSYS软件,建立参数化有限元模型,利用APDL语言实现波浪载荷的自动施加。

The overall longitudinal bending strength was analyzed by FEM for 3 types of ship structures with pillars only, with double longitudinal truss and with longitudinal bulkhead respectively. By comparing the numerical results of FE analysis with that of classical beam theories, the effects of longitudinal truss upon the hull girder bending stress, deflection and transverse strength were analyzed. With the APDL program the parameterized calculation model of ship＇s structures were established, and the wave loads were applied automatically in ANSYS.