药型罩切分方式对射流形成影响的数值模拟

为了研究药型罩切分方式对其形成射流性能的影响,利用数值模拟软件ANSYS/LS-DYNA对横向切分和纵向切分的药型罩以及未切分药型罩在爆轰波作用下形成射流的过程以及对45号板的侵彻能力进行了数值模拟,比较了不同切分方式的药型罩在爆轰波作用下形成射流的形状、头尾部速度、拉伸长度和抗拉伸性能及其对45号钢板的侵彻能力。结果表明,在相同装药条件下,横向切分药型罩相比纵向切分药型罩的头部速度提高约220m/s,且抗拉伸性能更好,对45号钢板的侵彻深度提高约3.26cm;横向切分药型罩相比未切分药型罩的头部速度提高约360m/s,对45号钢板的侵彻能力提高约5.62cm。

Numerical Simulation on the Effect of Different Segmentation Methods of Shaped Charge Liner on the Formation of Jet

To study the effect of different segmentation methods of shaped charge liner on the formation of jet,the numerical simulation of the formation process of jet under the effect of detonation wave for different segmentation methods of shaped charge liner,including horizontal segmentation and longitudial segmentation,shaped charge liner without segmentation,and the penetration ability to 45 # steel plate were performed by employing numerical simulation software ANSYS/LS-DYNA.The shape and head to tail speed of jet,stretching length and tensile properties formed under the effect of detonation wave for different segmentation methods of shaped charge liner and its penetration to 45 # steel target plate were compared.Results show that under the same charge conditions,compared to longitudial segmentation type shaped charge liner,the head speed of horizontal segmentation type shaped charge liner improves by about 220 m/s and its tensile performance is better,the penetration depth to 45 # target plate increases by about 3.26 mm.Compared with shaped charge liner without segmentation,the head speed of horizontal segmentation type shaped charge liner improves by about 360 m/s,and the penetration depth to 45 # steel target plate increases by about 5.62 cm