摘要
复合材料层合结构的自由边效应是复合材料结构总体破坏的主要因素之一。本文对复合材料层合结构自由边效应进行了实验研究,得到了自由边效应的分布规律,即层间应力在自由边界和载荷边界附近有明显的应力集中,在离开边界的地方应力集中现象很快消失。实验结果与数值模拟结果趋势基本一致,这一规律的发现可为复合材料制造工艺和工程应用提供指导。
The free-edge effect on composite laminates is one of the main factors of structural failure. In this paper the experimental study is given to research free-edge effect on laminates subjected to uniaxial tension. The experimental result shows that there exists obvious interlaminar stress concentration phenomenon near the free and loading edges, and this phenomenon disappears soon away from the edges. The experimental result and its corresponding numerical simulation show the similar strain distribution near the loading edge. The result can give the direction of applications in the composite process and engineering
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2005年第3期3-5,23,共4页
Fiber Reinforced Plastics/Composites
关键词
复合材料
层合结构
自由边效应
层间应力
实验研究
composites
laminates
free-edge effect
interlaminar stress
experimental study
