Al/SiC复合材料室温下阻尼特性的数值模拟  

NUMERICAL SIMULATION FOR DAMPING PROPERTY OF COMPOSITE Al/SiC AT ROOM TEMPERATURE

作　　者：徐东辉[1] 张忠明[2] 王锦程[2] 杨根仓[2] 

机构地区：[1]西安交通大学力学系 [2]西北工业大学凝固技术国家重点实验室

出　　处：《中国有色金属学报》1999年第2期335-338,共4页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金;博士后科研基金

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。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.

关 键 词：有限元 复合材料 阻尼 数值模拟 铝基 碳化硅 

分 类 号：TB333[一般工业技术—材料科学与工程]