利用LS_DYNA软件，对高速破片侵彻防护液舱过程中液舱后板的载荷特性进行仿真研究，分析液舱后板载荷的空间分布特性及破片的速度和厚度对液舱后板载荷的影响，得到了液舱后板任一点的压力峰值和比冲量的拟合计算公式。研究表明，液舱后板的载荷在板中心（即破片中心在液舱后板上的投影点）最大，随着到中心点的距离增加而呈指数衰减；增加破片的速度或厚度，将使液舱后板任一点的压力峰值和比冲量均增大。
Numerical simulations were conducted to research load characteristic of guarding liquid cabin's back plate under high velocity fragment impact by using LS_DYNA software. The spatial distribution of liquid cabin's back plate load was analyzed, as well as the effect on liquid cabin's back plate load of fragment's velocity and thickness. The fitting formulas for calculating peak pressure and specific impulse at any one point of liquid cabin's back plate were gained. The research shows that, the load is ultimate at center point of liquid cabin's back plate which is the projective point of fragment's center point on the plate, and is exponentially declined when increasing the distance from the center point to the other one point. If fragment's velocity or thickness increases, the peak pressure and specific impulse at any one point of liquid cabin's back plate both increase.
2018,40(4): 1-5 收稿日期：2016-12-29
DOI：10.3404/j.issn.1672-7649.2018.04.001
分类号：O347
基金项目：国家自然科学基金资助项目(51409253)
作者简介：吴林杰(1987-),男,博士研究生,研究方向为舰船抗爆抗冲击
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