含随机空隙三维机织复合材料有效力学性能预报  

Investigation of the mechanical properties of the 3D woven composites with random pores

作　　者：仲苏洋[1] 果立成[1] 解维华[2] 白晓明[1] 

机构地区：[1]哈尔滨工业大学航天科学与力学系,哈尔滨150001 [2]哈尔滨工业大学复合材料与结构研究所,哈尔滨150008

出　　处：《复合材料学报》2013年第S1期189-192,共4页Acta Materiae Compositae Sinica

摘　　要：本文研究了一种含随机空隙缺陷三维机织复合材料的有效力学性能。首先建立了该材料的代表性体积单元,即单胞,推导了基于非均匀单元的有限元法,应用该方法可以有效处理含有空隙的三维机织复合材料,而后计算了三维机织复合材料的主要方向上的有效弹性模量和泊松比,并讨论了随机空隙缺陷的体积分数对整体有效力学属性的影响。In this work the mechanical properties of a type of three-dimensional(3D)woven composites with random pores are studied.The structure of this 3D woven composite is described and its representative volume element(RVE)model is built.The finite element method based on nonhomogeneous elements is derived and adopted in the calculation.The composites with complex microstructure could be managed by this method.The random pores in the woven materials are described which can be dealt by the method mentioned in the previous sentence. The effective moduli and Poisson's ratios of the composites are obtained.The influences of the volume fraction on the effective elastic properties are discussed.

关 键 词：三维机织复合材料 非均匀单元 随机空隙 有效力学属性 

分 类 号：TB332[一般工业技术—材料科学与工程]