1. 上海交通大学 机械与动力工程学院， 上海 200240； 2. 上海卫星工程研究所，上海 201109
收稿日期:2017-09-18出版日期:2018-08-28发布日期:2018-08-28通讯作者:李大永,男，教授，博士生导师，电话（Tel.）: 021-34206313; E-mail: dyli@sjtu.edu.cn.作者简介:江丙云（1985-），男，安徽省亳州市人，博士生，工程师，主要从事复合材料研究和工程应用.基金资助:国家自然科学基金（51175335, 51675331）Research on Transverse Shear Property of Composite Circular Cell Honeycomb
JIANG Bingyun,KONG Xianghong, ZHOU Xubin,LI Dayong1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China；2. Shanghai Institute of Satellite Engineering, Shanghai 201109, China
Received:2017-09-18Online:2018-08-28Published:2018-08-28摘要/Abstract
摘要： 分别采用解析法、数值法和双剪试验对碳纤维增强复合材料圆管芯材(碳管芯材)的横向剪切刚度进行研究，得到了碳管芯材的等效横向剪切模量和修正系数.采用层压板理论的刚度矩阵计算方法求解碳管所用层压板的面内剪切模量，并结合碳管芯材的矩阵胞元计算得到芯材横向剪切模量的解析解；使用有限元方法对双层碳管芯材建立碳管芯材双剪有限元模型，通过数值分析得到碳管芯材等效横向剪切模量的数值解；应用试验结果对解析解和数值解进行修正，获得的修正系数为碳管芯材力学性能研究及航天器结构应用提供了重要参数.
关键词: 碳纤维增强复合材料, 圆管芯材, 横向剪切刚度, 剪切模量, 修正系数
Abstract: The transverse shear stiffness of carbon fiber reinforced plastics (CFRP) circular cell honeycomb (CCH) was studied using analytical method, numerical method and experiments, and the equivalent transverse shear modulus of CFRP CCH was found. The in-plane shear modulus of the laminate used for CCH was found by calculating the stiffness of laminate, and the analytical solution of shear modulus of CCH was obtained using a rectangular representative volume element (RVE). Configuration of composite tubes was designed according to the finite element (FE) analyses of CCH. The numerical solution of shear modulus of CCH was found by FE analysis using twin-shear FE model of CCH. The analytical and numerical solutions were corrected using experimental results. The correction coefficient was found, and it is a very important parameter for the study of mechanical property and application of CCH.
Key words: carbon fiber reinforced plastics (CFRP), circular cell honeycomb (CCH), transverse shear stiffness, shear modulus, correction coefficient
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