84m超规范分节驳全船结构强度有限元分析

The finite element analysis of the whole structural strength of a 84 m exceeding criterion integrated barge

84 m分节驳船为横骨架式结构,双舷侧宽度与双底高度均小于规范规定。由于结构的特殊性,船体强度很难采用常规规范中的舱段有限元模型或梁理论来进行校核,因而采用MSC.Patran/Nastran软件建立了84 m分节驳船有限元模型,基于坦谷波方法施加了舷外水压力,同时货物与波浪扭矩以等效分布载荷形式进行施加,计算得到全船在不同工况下的应力分布与相对变形,为船厂的后续设计与制造提供依据和指导。

The 84 m integrated barge is transverse framing construction,the width of double boardside and height of double bottom is less than the criterion prescription Because of the particularity of the structure,the hull strength is difficulty to adopt cabin segment FEM model or beam theory of the normal criterion to check,thus it adopts MSC.Patran/nastran software to establish the 84 m integrated barge FEM model,bring to hear the shipboard water pressure bused on trochoidal wave method,at the same time,the cargo and wave torsional moment brought as equivalent distributed load,it calculates the whole ship stress distribution and relatively dislorsion,provides basis and guidance for the shipyard continuous design and construction.