本研究是採用外顯式有限元素軟體LS-DYNA3D，分析模擬以K739碳纖
維編織布為強化 材之7075鋁基複合材料平板，受半球形頭之鎢燒結合金
彈頭撞擊的行為和現象。複材平板之碳纖維體積含有率有三種，分別是5
﹪、10﹪、15﹪；而彈頭撞擊平板的撞擊條件有三 種撞擊初速（分別
為500 m/s、1000 m/s、1500 m/s）及四種撞擊傾角（分別為正向、30 度
、45度、60度）。鎢撞擊體及鋁合金基材使用彈塑性流體的材料模式，而
碳纖維強化材則使用正交彈性體之材料模式。模擬此三十六組撞擊情況後
，只有當撞擊體以撞擊初速 500 m/s、傾角60度，撞擊含15﹪碳纖維之
複材平板發生彈跳外，其他撞擊結果皆為貫穿 。並經由結果的觀察與分
析，發現隨複材平板的材料性質、撞擊初速及傾角的不同，對撞擊體與平
板的變形與破壞、系統能量變化、撞擊體速度變化，以及複材平板的作用
力變化情形，都有著重大的影響。且在撞擊初速1000 m/s以下，碳纖維含
量的增加，對複材的強化效果愈好，複材的強韌性提高；當撞擊初速高
達1500 m/s時，碳纖維含量的增加對提昇複材強韌性的效果並不明顯。經
由類似撞擊實驗結果的比對，可證實模擬之正確性。

The purpose of this study is to analyze the penetration and
perforation ofK739 carbon fiber reinforced 7075 aluminum metal
matrix composites subject to tungsten projectile impact by using
LS-DYNA3D, an explicit three dimensional finite element code.
The composites plate was made of three kind of fiber volume
fraction, 5%, 10% and 15%. The hemispheric projectile strikes
the composites plate at four incident angles, 0, 30, 45 and
60. The impact velocity varies form 500 m/s to 1500 m/s
at an interval of 500 m/s. The material model of the
Tungsten projectile and aluminum matrix are elastic- plastic-
hydrodynamic, and the material model of the carbon fiber
reinforcementis orthotropic elastic. From the results, the
projectile appears ricochet phenomena at only one of the
thirty-six cases, and the projectile penetrates the plate at
the others. Analyzing the results, deformations, variation of
time history of energies, velocities and forces of the
projectile and composites plate are functions of the
property of composites plate, incident angle and initial
velocity. As the carbon fiber fraction of the composites
plate is increased, the stiffness and toughness of the
composites are increased. Compared with the results of
impact test from previous literatures,the results of the
simulations are believable.