桁架平台的连续与间断对船体总纵强度的影响

Effects of Continuous and Discontinuous Truss Platform on the Overall Longitudinal Strength of Ships

为掌握桁架平台的连续与间断对全船总纵强度的影响,采用MSC_Patran软件,通过全船有限元分析(Finite Element Analysis,FEA)方法,分别对桁架平台整体性连续布置和将桁架平台间断为多个独立桁架平台布置2种情况下船体的总纵强度进行计算,得出船体主要纵向连续构件的应力分布情况,以及该桁架平台对船体挠度的影响程度,并进行分析对比。结果发现,平台整体性连续布置相比间断布置对船体及桁架平台本身的总纵强度有更好的加强作用。

To determine the effects of continuous and discontinuous truss platform on the overall longitudinal strength of the vessel,MSC Patran software is used to calculate the overall longitudinal strength with the continuous and discontinuous truss platforms for the same ship type based on the Finite Element Analysis(FEA)method.Both the stress distributions of major longitudinal continuous hull components and the influence of truss platform on the hull deflection are obtained and then compared and analyzed.The result shows that the overall continuous arrangement of the platform has a better strengthening effect than the discontinuous arrangement concerning the overall longitudinal strength of the hull and truss platform itself.