| 三维机织复合材料拉伸损伤 |
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| 引用本文： | 王新峰,陈国军,周光明.三维机织复合材料拉伸损伤[J].南京航空航天大学学报,2010,42(1). |
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| 作者姓名： | 王新峰 陈国军 周光明 |
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| 作者单位： | 1. 南京航空航天大学飞行器结构力学与控制教育部重点实验室,南京,210016
2. 中国直升机设计研究所,景德镇,333001 |
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| 基金项目： | 江苏省自然科学基金(BK2006724)重大资助项目;;国家自然科学基金(10772079)资助项目 |
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| 摘 要： | 采用三维实体有限元方法,结合周期性边界条件,研究了三维机织复合材料在经向拉伸和纬向拉伸载荷作用下损伤的起始、扩展直至最终破坏的全过程。分析中抛弃了以往损伤研究中采用的单元消失技术,对破坏的基体单元和纤维束单元均按方向进行刚度折减。制作三维机织拉伸试件并进行了相应的试验,计算结果和试验结果吻合良好,证明了该研究方法的正确性。
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| 关 键 词： | 复合材料 平面机织 损伤 刚度折减 |
Progressive Failure Analysis of 3-D Woven Composites Under Tensile Condition |
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| Wang Xinfeng,Chen Guojun,Zhou Guangming.Progressive Failure Analysis of 3-D Woven Composites Under Tensile Condition[J].Journal of Nanjing University of Aeronautics & Astronautics,2010,42(1). |
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| Authors: | Wang Xinfeng Chen Guojun Zhou Guangming |
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| Institution: | 1.MOE Key Lab of Structure Mechanics and Control for Aircraft/a>;Nanjing University of Aeronautics & Astronautics/a>;Nanjing/a>;210016/a>;China/a>;2.China Helicopter Research and Development Institute/a>;Jingdezhen/a>;333001/a>;China |
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| Abstract: | A three-dimensional (3-D)finite element method is developed to simulate the damage behavior of 3-D woven composites.The periodic boundary conditions are applied to the models during the 3-D fi-nite element analysis to ensure that both the displacement and the stress are continuous on boundary sur-faces.The "element disappear" technique is abandoned and the stiffness degradations of matrixes and yarns are all in directional.Specimens are manufactured and tensile experiments are performed.Predict-ed results are in agreement with experimental results.Finally,the correctness of the analysis method is verified. |
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| Keywords: | composite plain woven damage stiffness degradation |
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