新型桁架箱体浮筏结构重量优化研究

结合桁架结构的优点,将桁架结构应用于传统浮筏形成一种新型桁架箱体浮筏结构,并对其重量进行优化。首先在有限元软件Abaqus中建立了桁架箱体浮筏模型,然后基于模态分析,重力场分析和抗冲击分析,以筏架上、下面板厚度为设计变量,分析了面板厚度变化对结构刚度及强度水平的影响,且在保证足够刚度和强度水平的前提下,浮筏减重可达15.4%。本文的研究可为新型桁架箱体浮筏的结构轻量化设计奠定基础。

Research on weight optimization of a new truss box floating raft structure

Combining the advantages of the truss structure, the truss structure is applied to the traditional floating raft to form a new type of truss box floating raft structure, and its weight is optimized. Firstly, establishing a truss box floating raft model through the finite element software ABAQUS, then based on the modal analysis, gravity field analysis and impact analysis. Taking the thickness of the upper and lower decks of the raft as design variables, the influence of the thickness of decks on the structural stiffness and strength level is analyzed. Under the premise of ensuring sufficient rigidity and strength level, the weight loss of the floating raft can reach 15.4%. The research in this paper can construct the foundation for the structural lightweight design of the new truss box floating raft.