混杂纤维复合材料的拉伸刚度  

Tensile stiffness of hybrid fiber composites

作　　者：徐欢欢[1] 古兴瑾[1] 李晨[1] 

机构地区：[1]南京航空航天大学机械结构力学与控制国家重点实验室,南京210016

出　　处：《复合材料学报》2016年第2期394-398,共5页Acta Materiae Compositae Sinica

基　　金：中央高校基本科研业务费专项资金(NS2015014)

摘　　要：对单向和多向混杂纤维复合材料的拉伸刚度进行了研究。在混合定律的基础上考虑混杂比和分散度对混杂效应的影响,提出了单向混杂纤维复合材料拉伸模量的估算公式。通过实验得到了多向混杂纤维复合材料的拉伸模量,并且采用经典层合板理论进行了估算,基于混杂比以及分散度对拉伸模量的影响规律,对多向混杂纤维复合材料拉伸模量的估算公式进行了修正。结果表明:混杂纤维复合材料的拉伸模量与混杂比和分散度相关,分散度的增大在一定程度上可以提高单向混杂纤维复合材料的纵向拉伸模量。采用经典层合板理论所得的拉伸模量与实验值有一定的误差,而本文所提出的公式能够更加准确地估算混杂纤维复合材料的拉伸模量。The tensile stiffness of unidirectional and multi-directional hybrid fiber composites was studied.The influence of hybrid ratio and dispersion degree on hybrid effect was considered on basis of hybrid law and the prediction formula of the tensile modulus of unidirectional hybrid fiber composites was proposed.Tensile modulus of multi-directional hybrid fiber composites was obtained by experiment and estimated with the classical laminate theory.Based on the effects that hybrid ratio and dispersion degree have on the tensile modulus,the estimation formula of tensile modulus of multi-directional hybrid fiber composites was corrected.The result shows that the tensile modulus of hybrid fiber composites relates to the hybrid ratio and dispersion degree,the increase of dispersion degree can improve the longitudinal tensile modulus of unidirectional hybrid fiber composites to some extent.The tensile modulus dotained by classical laminate theory has an error compared with the experiment value,while by using the proposed formula,the tensile modulus of hybrid fiber composites can be estimated more exactly.

关 键 词：混杂 复合材料 拉伸 刚度 修正公式 

分 类 号：TB332[一般工业技术—材料科学与工程]