| 颗粒增强铝基复合材料微观损伤仿真及实验研究 |
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| 引用本文： | 杨智勇,韩建民,李卫京,陈跃,王金华.颗粒增强铝基复合材料微观损伤仿真及实验研究[J].航空材料学报,2009,29(3):39-44. |
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| 作者姓名： | 杨智勇 韩建民 李卫京 陈跃 王金华 |
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| 作者单位： | 北京交通大学轨道车辆结构可靠性与运用检测技术教育部工程研究中心,北京,100044 |
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| 摘 要： | SiCp/A356复合材料的宏观力学行为与其微观损伤机理密切相关.随着温度的升高,材料力学性能明显下降,SiCp/A356复合材料表现出的微观损伤机理不同.本文建立了球形SiC颗粒与铝基体组成的复合材料单元体计算模型,采用该模型对复合材料的微观损伤机理进行了仿真研究,分析得到的复合材料微观损伤机理与实验观测结果相吻合.在常温下复合材料的裂纹萌生以基体撕裂和颗粒断裂为主;高温下其裂纹萌生机制以颗粒脱离和基体撕裂为主.
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| 关 键 词： | 颗粒增强铝基复合材料 微观损伤 裂纹萌生 仿真 |
Numerical and Experimental Research on Micro-damage of SiC_p/A356 Composites |
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| YANG Zhi-yong,HAN Jian-min,LI Wei-jing,CHEN Yue,WANG Jin-hua.Numerical and Experimental Research on Micro-damage of SiC_p/A356 Composites[J].Journal of Aeronautical Materials,2009,29(3):39-44. |
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| Authors: | YANG Zhi-yong HAN Jian-min LI Wei-jing CHEN Yue WANG Jin-hua |
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| Institution: | Engineering Research Center of Structure Reliability and operation Measurement Technology of Rail Guided Vehicles;Beijing Jiaotong University;Beijing 100044;China |
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| Abstract: | Macroscopically mechanical behaviors were closely related with the micro-damage mechanism of SiC particle reinforced aluminum matrix composites.With the temperature increasing,the mechanical properties of the composites decreased significantly,the reason of which was the micro-damage mechanism of the composites was different at different temperature.The unit cell model for the SiCp/A356 composites was established which consists of a spherical SiC particle and aluminum matrix.On the basis of the model,the si... |
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| Keywords: | SiCp/A356 composite micro-damage crack initiation numerical simulation |
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