Drilling is indispensable process and it cannot be avoided for joining composite structures used in various engineering ......

采用AUTODYN-2D软件对内核材料为高密度聚乙烯、Kevlar-Epoxy、Glass-Epoxy、尼龙、铝、铜的钨壳体PELE弹丸以不同速度侵彻厚50mm......