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《Acta Materiae Compositae Sinica》 2009-05
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Finite element research on the effect of interfacial bond strength on fracturing process of ceramic matrix composites

LI Xudong1,ZHANG Yue*1,ZHANG Fanwei1,ZHANG Dahai2,LI Zhongping2(1.School of Materials Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China;2.National Key Laboratory of Advanced Functional Composite Materials,Aerospace Research Institute of Materials and Processing Technology,Beijing 100073,China)  
The finite element method was employed to simulate the crack growth behavior of ceramics matrix composites.The model used the combined elements for simulating the separation between matrix and fiber and the contact elements for simulating the friction between matrix and fiber,considering interfacial bond strength on the basis of the fracture model of fiber reinforced composites.It predicted that the interfacial bond strength between matrix and fiber affects the fracturing process through FEM calculation and studied the impacts on the composites with different elastic moduli of matrix for further discussion.Compared with other results,this result showed that the moderate interfacial bond strength was suitable for the composites,whether its elastic modulus of matrix was "strong" or "weak",to improve the toughness and tensile strength.
【CateGory Index】: TB332
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