平纹编织复合材料吸湿行为试验及有限元模拟  

TEST OF MOISTURE ABSORPTION BEHAVIOR AND FINITE ELEMENT SIMULATION OF PLAIN WEAVE COMPOSITE MATERIALS

作　　者：张宪丰 管国阳[1] ZHANG Xian-feng;GUAN Guo-yang(Department of Engineering Mechanics,School of Civil Engineering and Architecture,Nanchang University,Nanchang 330000,China)

机构地区：[1]南昌大学建筑工程学院工程力学系,南昌330000

出　　处：《复合材料科学与工程》2020年第11期19-25,共7页Composites Science and Engineering

摘　　要：试验测定了一种平纹编织复合材料的吸湿曲线,并建立了包含平纹编织细观结构的层合板吸湿有限元模型。通过该模型研究了层合板的铺层位置的随机偏移、铺层角度比例及纤维束中纤维体积含量对吸湿的影响。研究表明:平纹编织复合材料层合板吸湿行为基本符合Fick定律;细观有限元模型分析的结果和试验吻合良好;铺层位置的随机偏移对平衡吸湿时间有影响;复合材料铺层角度比例不同对平纹编织复合材料的平衡吸湿量略有影响,对平衡吸湿时间没有明显影响;平纹编织复合材料的纤维束中纤维含量升高,更易达到吸湿平衡,但平衡吸湿率和吸湿速率降低。The moisture absorption curve of a plain weave composite was measured experimentally,and a moisture-absorbing finite element model containing the plain weave microstructure was established.Through this model,the effects of random offset,the angle ratio of the laminate lay-up and the fiber volume in the fiber bundle on moisture absorption were studied.The investigation shows that the moisture absorption behavior of the plain weave composite laminate is in accordance with Fick′s law in general.The FEA results agrees well with the test.A random offset of the layup position has an effect on the balanced moisture content.The angle ratio of composite lay-up has a slight effect on the balanced moisture content,but it has no significant effect on the exposure time before banlance.The fiber content in the fiber bundle of plain weave composite material increases,which makes it easier to reach the moisture absorption balance,but the equilibrium moisture absorption rate and the moisture absorption rate decrease.

关 键 词：平纹编织 质量扩散 Fick定律 铺层偏移 铺层比 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]