设计了一种碳纤维复合材料弹体,基于Forrestal阻力公式对复合弹体在侵彻混凝土靶过程中壳体所承受的最大轴向应力进行了预估。制备了碳纤维复合材料层合板、空心圆筒和复合弹体试样,对碳纤维复合材料层合板和圆筒试样进行了不同应变率下的压缩试验,对复合弹体以298m/s和432m/s的速度,分别对表面强度为48MPa、厚度为200mm和350mm的素混凝土靶进行了正侵彻试验。结果表明:选用的碳纤维复合材料抗压强度随着应变率的增大而增大;所设计的复合弹体对混凝土靶具有一定的侵彻能力;制备的复合弹体壳体能够满足着速在400m/s范围内对混凝土靶侵彻的强度需求。

A kind of composite projectile was devised by the author. The maximum axial stress in composite shell during penetration was calculated based on Forrestal's penetration theory. Several carbon fiber composite material laminate, cylindrical shells and composite projectiles samples were prepared. A series of axial compress tests at different strain rates were carried out on laminate and cylindrical shells. After that, two carbon fiber composite material projectiles have penetrated concrete targets at the speed of 298 and 432 m/s respectively. The thickness of concrete targets is 200mm, 350mm and their surface compression strength is 48 MPa. The experimental results indicate that the compressive strength of carbon fiber composite material enhanced effectively with strain rates added. The composite projectile can go through the concrete target easily. The designed carbon fiber composite material shell of projectile could suffer the compressive stress during penetration concrete at the speed of 400m/s without fiber segregation and breakage.