机织复合材料力学性能的细观分析与实验研究  

MICROMECHANICAL ANALYSIS AND EXPERIMENTAL EVALUATION OF THE PROPERTY OF WOVEN COMPOSITE MATERIALS

作　　者：燕瑛[1] 楼畅[1] 成传贤[1] 章怡宁[2] 杨旭[2] 

机构地区：[1]北京航空航天大学飞机设计研究所,北京100083 [2]沈阳飞机研究所,沈阳110035

出　　处：《复合材料学报》2001年第2期109-113,共5页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金!(5 96 0 30 0 2;5 0 0 730 0 2 );国防科技预研基金!(99J12 .1.3.HK0 10 9);航空科学基金资助项目!(99G5 10 2 6

摘　　要：建立了预测机织复合材料弹性性能和强度的方法并进行了相应的实验研究 ,系统地研究了织物几何和结构参数对机织复合材料性能的影响 ,提出了优化机织复合材料弹性性能细观结构参数的选择 ,完成了具有友好界面的机织复合材料弹性性能分析软件 ,实验研究了冲击后的拉伸与压缩性能及疲劳剩余强度和寿命 ,建立了基于有限元分析和失效准则预测冲击能门槛值的方法 ,给出了预估疲劳寿命的公式 ,且实验验证了分析方法的正确性。A prediction method of the elastic property and strength of woven composites was established. Corresponding experimental studies were completed. The effects of various structural and geometrical parameters on the properties of woven composites were studied systematically. Fabric micro-structural parameter selection for optimizing the elastic properties of woven composites was provided. A code with user-friendly interface was developed to provide an efficient calculation tool in selecting the best fabric reinforcement for structural composites. Tensile and compressive strength after impact, residual fatigue strength and fatigue life were evaluated experimentally. A finite element analysis coupled with failure criteria was developed to predict the impact energy threshold of the composites. Equations of predicting the fatigue life for woven composites were provided. The comparison of the experimental data with the prediction results shows a good agreement, thus confirming the usefulness of the prediction method.

关 键 词：机织复合材料 细观结构 性能评定 分析软件 力学性能 弹性性能 拉伸强度 冲击性能 

分 类 号：TB33[一般工业技术—材料科学与工程]