摘要
为研究镁合金在超高速撞击条件下的响应特征,采用SPH(光滑粒子流体动力学)方法对球形弹丸超高速碰撞镁合金靶板进行数值模拟,并与铝合金进行对比。结果表明:钢球高速撞击靶板后,镁合金产生的孔径略大于铝合金,均高达3倍钢球直径;镁合金碎片云的膨胀距离和铝合金的相差不大,但镁合金碎片云前端粒子的动能明显低于铝合金的,能起到较好的前级防护作用。从而说明镁合金板在航空航天飞行器上具有较好的应用前景。
In order to investigate the response characteristics of magnesium alloys under hypervelocity impact,the SPH（Smoothed Particle Hydrodynamics） method was used to simulate spherical projectile on magnesium alloy target under hypervelocity impact,and compare with the aluminum alloy. The result shows that after the target being impacted by steel ball with hypervelocity,the hole size of magnesium alloy is slightly larger than that of aluminum alloy,and both of them are up to three times of the diameter of steel ball. The expand distance of magnesium alloy debris cloud is similar to that of aluminum alloy,but the kinetic energy of the particles in front of magnesium alloy debris cloud is significantly lower than that of aluminum alloy,so that it can play a better pre-protective effect. The results show that magnesium alloy has a great application prospects in aviation aircraft.
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2015年第1期14-17,共4页
Ordnance Material Science and Engineering
基金
中北大学第十届研究生科技基金项目(20131020)
关键词
超高速碰撞
镁合金
铝合金
SPH算法
碎片云
hypervelocity impacts
magnesium alloy
aluminum alloy
SPH method
debris cloud
