CAJ | 학술논문

为了获得椭圆形罩线型聚能装药（ LSC）射流侵彻钢锭的特点和规律，采用实际切割试验和三维数值模拟（ ANSYS /LS-DYNA）相结合的方法对椭圆形罩线性聚能装药射流侵彻钢锭过程的特点和规律进行了研究。结果表明，切割深度随炸高的增加先增加后下降，在一定炸高范围内表现出对炸高的不敏感性，最佳炸高为60 mm；随着炸高的增加，侵彻钢锭横断面形状的底部宽度从55 mm 增至75 mm，中间的侵彻深度从70 mm 增至84 mm，两端的侵彻深度从40 mm 增至70 mm，切口剖面形状更趋于平缓；数值模拟获得的侵彻结果与切割试验获得的结果基本一致。该三维数值计算模型可以用来模拟实际的切割器，获得的切割钢锭的特点和规律能够较好地反映实际切割过程。
위료획득타원형조선형취능장약（ LSC）사류침철강정적특점화규률，채용실제절할시험화삼유수치모의（ ANSYS /LS-DYNA）상결합적방법대타원형조선성취능장약사류침철강정과정적특점화규률진행료연구。결과표명，절할심도수작고적증가선증가후하강，재일정작고범위내표현출대작고적불민감성，최가작고위60 mm；수착작고적증가，침철강정횡단면형상적저부관도종55 mm 증지75 mm，중간적침철심도종70 mm 증지84 mm，량단적침철심도종40 mm 증지70 mm，절구부면형상경추우평완；수치모의획득적침철결과여절할시험획득적결과기본일치。해삼유수치계산모형가이용래모의실제적절할기，획득적절할강정적특점화규률능구교호지반영실제절할과정。
To study the characteristics and laws of penetrating steel ingot of linear shaped charge( LSC)with oval cover,three-di-mensional numerical model was established by ANSYS /LS-DYNA program. A numerical simulation study was performed,and the actual cutting test was implemented on the base of numerical simulation. By using the method of actual cutting experiment and three-dimensional numerical simulation,the characteristics and laws of penetrating steel ingot of LSC with oval cover were stud-yed. Results show that the cutting depth first increases and then decreases with the standoff increasing. The cutting depth showed insensitivity in a standoff range. The best standoff was 60 mm. The cutting cross shape of the steel ingot of different time was obtained under the different condition of standoff. With the standoff increasing,the cross-section bottom width of penetrating steel ingot was from 55 mm to 75 mm,and the medial depth was from 70 mm to 88 mm,and the both sides depth was from 40 mm to 70 mm. The penetration results of numerical simulation were consistent with the cutting test results. The characteristics and laws of penetrating steel ingot from the simulation model can from the simulation model reflect the actual cutting process.