(西安交通大學(xué)力學(xué)系，西安 710049
西北工業(yè)大學(xué)凝固技術(shù)國家重點(diǎn)實(shí)驗(yàn)室，西安 710072)
摘 要: 利用有限元方法對Al/SiC復(fù)合材料的阻尼特性進(jìn)行了數(shù)值模擬，指出室溫下Al/SiC復(fù)合材料的阻尼主要由增強(qiáng)顆粒與基體材料間彈性模量的不同造成，Al/SiC復(fù)合材料的損耗因子為純鋁的10倍。通過計(jì)算表明，對于較硬的增強(qiáng)顆粒，彈性模量越高，材料整體阻, 尼性能越好。
關(guān)鍵字: 有限元 復(fù)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
