折叠式夹层板作为轻型结构在舰船中应用前景广阔,而夹芯层结构为决定夹层板力学性能的关键因素。在总结现有折叠式夹层板类型基础上对其进行分类,整理出20种折叠式夹层板型式,进行结构概念设计;利用Abaqus数值仿真分析各种型式夹层板在横向压皱载荷下准静态压皱力学行为,获得各种夹层板压皱变形模式、压皱性能及吸能效率。对比分析表明V-I、II、III、IV及U-I五种夹层板结构的吸能效率、平均压皱强度较高,作为吸能结构较优;而U-IV、Circle Tube-I、U-II三种夹层板结构在一定条件下可作为吸能结构。
Abstract
Corrugated cores sandwich panel as a lightweight construction has broad application prospects. The sandwich core is mainly responsible for the mechanical properties of sandwich panel. Based on the summary of existing corrugated cores sandwich panel types, 20 kinds of corrugated cores sandwich panels are sorted out and conceptual design of structures are established. At the same time, the lateral crushing mechanical behavior of various forms of sandwich panels are taken with the finite element software Abaqus. The parameters of crushing performance, deformation mode and energy absorption are compared. The results show that five kinds of sandwich planels V-I, II, III, IV and U-I, which have characteristics of higher specific energy absorption and specific strength, are better choices for energy-absorption structure. Then three kinds of sandwich planels U-IV, Circle Tube-I, U-II of high specific energy absorption can be used as energy-absorption structure under certain conditions.
关键词
折叠式夹层板 /
概念设计 /
吸能特性 /
数值仿真
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Key words
corrugated cores sandwich panels /
conceptual design /
energy absorption performance /
numerical simulation
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