| 2D-C/SiC复合材料的单轴拉伸力学行为及其强度 |
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| 引用本文： | 杨成鹏,矫桂琼,王波.2D-C/SiC复合材料的单轴拉伸力学行为及其强度[J].力学学报,2011,43(2):330-337. |
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| 作者姓名： | 杨成鹏 矫桂琼 王波 |
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| 作者单位： | 西北工业大学工程力学系 |
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| 基金项目： | 国家自然科学基金资助项目(90405015)~~ |
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| 摘 要： | 通过单调拉伸和循环加卸载试验, 研究了平纹编织C/SiC复合材料的损伤演化过程及其应
力-应变行为. 结果表明, 残余应变、卸载模量和外加应力的关系曲线与拉伸
应力-应变曲线具
有类似的形状. 基于剪滞理论和混合率建立了材料的损伤本构关系和强度模型, 分析计算表
明, 残余应变主要由裂纹张开位移和裂纹间距决定, 而卸载模量主要由界面脱粘率决定; 材
料的单轴拉伸行为主要由纵向纤维束决定, 横向纤维对材料的整体模量和强度贡献较小. 理
论模拟结果与试验值吻合较好.
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| 关 键 词： | 2D-C/SiC复合材料 力学性能 残余应变 卸载模量 细观力学模型 |
| 收稿时间： | 2009-12-07 |
| 修稿时间： | 2010-04-16 |
UNIAXIAL TENSILE STRESS-STRAIN BEHAVIOR AND STRENGTH OF PLAIN WOVEN C/SIC COMPOSITE |
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| Yang Chengpeng
,
Jiao Guiqiong
,
Wang Bo.UNIAXIAL TENSILE STRESS-STRAIN BEHAVIOR AND STRENGTH OF PLAIN WOVEN C/SIC COMPOSITE[J].chinese journal of theoretical and applied mechanics,2011,43(2):330-337. |
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| Authors: | Yang Chengpeng Jiao Guiqiong Wang Bo |
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| Institution: | Yang Chengpeng Jiao Guiqiong~(2)) Wang Bo (Department of Engineering Mechanics,Northwestern Polytechnical University,Xi'an 710129,China) |
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| Abstract: | Fiber reinforced ceramic matrix composites(CMCs) are widely investigated in recent years in order to obtain their damage mechanisms,failure modes and mechanical properties.A well-accepted fact is that the interface between the fibers and the ceramic matrix has great effects on the mechanical behavior of CMCs.The tough and nonlinear stress-strain behavior of CMCs can mainly be attributed to matrix cracking and interface debonding.Therefore,how these two factors affect the stress-strain relationship and the f... |
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| Keywords: | 2D-C/SiC composite mechanical properties residual strain unloading modulus micromechanical model |
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