摘要
改善纤维几何形态,引入球棒状纤维,可以提升短纤维增强复合材料的整体力学性能。基于复合材料细观力学中的剪滞模型,分析比较了球棒状纤维和平直纤维上的应力分布。应用MATLAB软件分析了不同部分的微元模型,得知球形微元具有分散内部应力,降低应力极值的效果。应用ANSYS软件给出直观模拟应力云图,验证了分析结果与理论模型的一致性。
To improve the overall mechanical properties of composite materials, ball-stick-shaped short fibers （BSS） have been applied to the composites. The research and analysis about stress distribution on the BSS were based on the shear-lag model. Two different micro-models were studied about the stress distribution on the fibers. The results indicated that ball-part can reduce the maximum internal stress were obtained by applying MATLAB. And the consistency of analysis results with theoretical models was verified with the aid of ANSYS.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2013年第10期152-156,共5页
Materials Reports
基金
国家"863"项目(2007AA03Z546)
国家自然科学基金(51073093)
关键词
球棒状
应力传递
复合材料
纤维
剪滞模型
ball-stick-shape, stress transmission, composites, fiber, shear-lag model
