双层蜂窝夹层板静压痕试验和数值分析
Experimental and Numerical Analysis of Static Indentation in Double-Layer Honeycomb Sandwich Panels
蓝洺铭 1徐志洪1
作者信息
- 1. 南京理工大学,江苏 南京 210000
- 折叠
摘要
[目的]研究双层蜂窝夹层板在静压痕力作用下的损伤情况.[方法]对双层蜂窝夹层板进行静压痕试验,在试验过程中引入数字图像技术(digital image correlation,DIC),测量试件表面的变形,并采用ABAQUS有限元软件建立三维失效模型,将试验结果与仿真模型进行对比.[结果]通过分析得出夹层板蒙皮的破坏模式主要是纤维断裂和基体破坏.[结论]蒙皮破坏后回弹能力大幅下降,蒙皮正面通常发生基体压缩损伤,蒙皮背面通常发生纤维断裂.
Abstract
[Purposes]This paper aims to study the damage of double-layer honeycomb sandwich panels under static indentation forces.[Methods]The static indentation experiments were carried out on double-layer honeycomb sandwich panels,and digital image correlation(DIC)was introduced in the experimen-tal process to measure the deformation of the specimen surface,and the ABAQUS finite element software was used to establish a three-dimensional failure model to compare the experimental results with the simulation model.[Findings]The failure modes of sandwich panel skin are mainly fiber fracture and ma-trix failure.[Conclusions]The resilience of the skin decreases dramatically after damage,and matrix compression damage usually occurs on the front side of the skin,and fiber breakage usually occurs on the back side of the skin.
关键词
复合材料/蜂窝夹层结构/静压痕/数值仿真Key words
composite/honeycomb sandwich structure/static indentation/numerical simulation引用本文复制引用
出版年
2024
NETL
NSTL
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