(西安交通大学力学系，西安 710049
西北工业大学凝固技术国家重点实验室，西安 710072)
摘 要: 利用有限元方法对Al/SiC复合材料的阻尼特性进行了数值模拟，指出室温下Al/SiC复合材料的阻尼主要由增强颗粒与基体材料间弹性模量的不同造成，Al/SiC复合材料的损耗因子为纯铝的10倍。通过计算表明，对于较硬的增强颗粒，弹性模量越高，材料整体阻, 尼性能越好。
关键字: 有限元 复合材料 阻尼
（1 Department of Engineering Mechanics,Xi'an Jiaotong University, Xi'an 710049, P. R. China
2 State Key Laboratory of Solidification Processing,
Northwestern Polytechnical University, Xi'an 710072, P. R. China）
Abstract:Finite element method was employed to simulate the damping behavior of the composite Al/SiC. From the results, it was concluded that the damping of the composite Al/SiC was mainly generated from the difference of elastic module between the enhanced particles and matrix under room temperature. The loss factor of Al/SiC is as 10 times high as that of pure aluminum. Moreover, it was deduced and proved that the damping property of the composite could be more improved if the elastic module of the enhanced particles were higher and the enhanced particles were relatively hard.
Key words: finite element method damping composite
