摘要
通过将作者发展的广义自洽有限元迭代平均化方法同用于描述金属塑性损伤的Ｇｕｒｓｏｎ本构模型相结合，对ＳｉＣ增强Ａｌ５４５６的细观损伤机制与其宏观性质的关系进行了参数研究。金属基体的细观损伤机制包括两种形式，增强相与金属基体之间界面的脱开及基体内孔洞的成核、长大与汇合。结果表明，界面的脱开增大了金属基复合材料的塑性，但导致了增强相增强作用的降低。
Generalized selfconsistent finite element iterative averaging method was united with the Gurson model for the parametric investigation of the damage mechanisms and their relations with the macroscopic tensile properties of the SiC reinforced Al5456. The mesoscopic damage mechanisms studied here contained two types: interphase debonding between the reinforcement and matrix and the nucleation, growth, and coalescence of the voids in the matrix. As shown by the results, the interphase debonding increases the composite ductility, but results in the strengthening effects of the brittle reinforcements decreasing unfavorably.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
1999年第2期88-93,共6页
Acta Materiae Compositae Sinica
基金
辽宁省博士启动基金
西安交通大学结构强度与振动国家重点实验室开发基金
关键词
细观损伤机制
宏观性质
金属基
复合材料
mesoscopic damage mechanisms, macroscopic properties, metal matrix composites
