摘要
在不同温度环境下，利用ＭＴＳ材料试验机，在中等应变速率（１／ｓ）下，对玻璃布－环氧层板的动态力学性能进行了实验研究，获得了杨氏模量、拉伸强度和泊松比等力学参数；对该层板材料在不同温度、不同应变速率下的应力应变曲线和破坏过程进行了分析讨论。根据实验数据。
Using a servo hydraulic material test machine system (MTS880 10), tensile experiments of glass cloth/epoxy laminates at higher strain rates (1/s) were carried out under different temperatures. The curves of stress strain have been measured. The Young′s modulus, tensile strength and Poisson′s ratio of the laminates have been obtained. A study of failure process for the laminates under different conditions has also conducted. The cxperimental results show that the dynamic response of the laminates is clearly dependent upon temperatures and strain rates and there exists dynamic toughness in the laminates. A design method of tensile sample of composite laminates has been reported. According to the experimental results, a constitutive equation of glass cloth/epoxy laminates is developed, and with which strain rate dependence and thermo softening effect of the laminates can be described.
出处
《机械科学与技术》
EI
CSCD
北大核心
1999年第1期125-126,129,共3页
Mechanical Science and Technology for Aerospace Engineering
关键词
复合材料
率相关
本构关系
玻璃布
环氧树脂
Composites laminates Rate Dependent Temperature effect Constitutive mode
