CAJ | 학술논문

利用二级轻气炮发射2017-T4铝球弹丸高速撞击金属网，通过金属网后面观察板弹坑分布研究金属网对高速撞击铝球的破碎作用及次生碎片粒子群分布特性，分析观察板弹坑分布与铝球直径、金属网面密度关系。获得铝球弹丸高速正撞击具有不同编织参数金属网时观察板弹坑分布模式。结果表明，铝球弹丸高速正撞击金属网后在观察板上产生多条呈放射状分布近似对称的触须状弹坑簇；触须状弹坑簇数量、长度随弹丸直径、撞击位置、金属网面密度不同而不同；相同撞击条件下铝球弹丸高速正撞击网格孔中心时，观察板触须状弹坑簇数量相对较多。
이용이급경기포발사2017-T4려구탄환고속당격금속망，통과금속망후면관찰판탄갱분포연구금속망대고속당격려구적파쇄작용급차생쇄편입자군분포특성，분석관찰판탄갱분포여려구직경、금속망면밀도관계。획득려구탄환고속정당격구유불동편직삼수금속망시관찰판탄갱분포모식。결과표명，려구탄환고속정당격금속망후재관찰판상산생다조정방사상분포근사대칭적촉수상탄갱족；촉수상탄갱족수량、장도수탄환직경、당격위치、금속망면밀도불동이불동；상동당격조건하려구탄환고속정당격망격공중심시，관찰판촉수상탄갱족수량상대교다。
A two-stage light gas gun was used to launch 2017-T4 Al-sphere projectiles impacting metallic mesh bumper.The distribution characteristic of the secondary debris clouds caused by Al sphere impacting metallic mesh bumper was studied.The effect of diameter of Al sphere and braiding areal density of metallic mesh on the crater distribution on the witness wall were analyzed.The crater distribution patterns on the witness wall behind metallic mesh bumpers with different braiding parameters were obtained.The results indicate that a few of approximate symmetry crater clusters like palpus can be observed on witness wall behind mesh bumper.The number and length of crater clusters are different with different impact position on mesh bumper,at different impact velocity and with different areal density of metallic mesh.Under the same impact condition,when the mesh bumper is impacted at a blank center position,more crater clusters like palpus on witness wall will be caused.