摘要
本文在自行研制的冲击拉伸装置上首次实现了单向玻璃纤维增强环氧树脂的冲击拉伸加卸载试验，结合试件在冲击拉伸过程中的瞬态温升和能量分析的结果，提出了完整的复合丝束模型，推出了冲击拉伸时的一维本构方程；并对该材料在３００～２０００ｓ￣－１的应变范围内进行了全面的冲击拉伸试验，通过对试验结果的数值统计分析和应变率相关性分析拟合出具体的本构方程，结果表明这个方程是有效的，有明显的物理意义。
The tensile impact loading-unloading test of unidirectional glass fiber reinforcedepoxy are carried out on a self-designed tensile impact setup in the first time. Combined withthe results of transient temperature rising and energy analysis under tensileimpact,a perfectcomposed bundle model is proposed and the one-dimensional constitutive equation undertensile impact is derived. Comprehensive tensileimpact tests in the strain rate range(300-2000 1/s)for that composite are carried on. The specific constitutive equation simulatedfrom the statistical analysis and rate-dependence analysis of the testing results showseffective and possesses obvious physical meaning.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
1994年第4期110-116,共7页
Acta Materiae Compositae Sinica
基金
国家自然科学基金项目
关键词
冲击拉伸
单向玻璃纤维
增强环氧树脂
tensileimpact,constitutive equation,unidirectional glassfiber reinforced epoxy,composed bundle
