多级三角形格栅夹芯板力学分析

复合材料学报, 2016, 33(3): 675-680. doi: 10.13801/j.cnki.fhclxb.20150911.001

多级三角形格栅夹芯板力学分析

隋倩倩 ^1, , 江舒 ^2, , 孙方方 ^3, , 范华林 ^4,

1.河海大学力学与材料学院,南京,210098

2.河海大学力学与材料学院,南京,210098

3.河海大学力学与材料学院,南京,210098

4.河海大学力学与材料学院,南京,210098

基金项目: 国家自然科学基金(11172089,11372095) 中央高校基本科研业务费专项资金(2014B32014)

关键词：点阵复合材料结构 , 多级三角形格栅夹芯板 , 等效理论 , 弹性屈曲 , 失效模式

Mechanical analysis of hierarchical isogrid sandwich plate

Keywords： lattice composite structure , hierarchical isogrid sandwich plate , equivalent theory , elastic buckling , failure mode

为了提高点阵复合材料结构的轻质高强力学特征,尤其提高其抗屈曲性能,设计了一种新型的多级三角形格栅夹芯板结构.根据等效连续介质力学方法提出了多级三角形格栅夹芯板的等效计算理论,预测了拉伸主导型多级三角形格栅夹芯板结构的等效弹性模量以及等效抗弯刚度.分析了侧压条件下多级三角形格栅夹芯板的弹性屈曲载荷和强度破坏模式.在理论模型的基础上绘制了侧压条件下多级三角形格栅夹芯板结构的失效模式图,指出了结构破坏模式与多级三角形格栅夹芯板尺寸之间的对应关系.研究表明:具有工字型截面的多级三角形格栅夹芯板结构相比于传统矩形截面格栅结构具有更高的抗弯刚度和弹性屈曲载荷,是一种性能更加优越的轻质高强点阵结构.

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材料期刊网

多级三角形格栅夹芯板力学分析

Mechanical analysis of hierarchical isogrid sandwich plate

参考文献