超高速聚能碎片成型的影响因素分析

为了研究超高速聚能驱动装置结构参数对超高速碎片成型的影响,以装置截断体以及药型罩的6个主要尺寸为优化对象,以成型超高速碎片的质量与速度为指标,应用正交设计法设计仿真方案。运用非线性显式动力学软件AUTODYN-2D对超高速碎片的形成进行数值仿真,并对仿真结果进行参数分析。结果表明:对碎片成型速度影响较大的依次为药型罩锥角、截断体小孔厚度、药型罩厚度;对碎片质量影响较大的依次为药型罩锥角、药型罩厚度、截断体小孔厚度。最终根据最优化设计方案得到了速度为11.2 km/s、质量为1.452 g的超高速碎片。

The factors influencing the speed and the mass of convergent hypervelocity debris

In order to study the impact of ultra-high-speed convergent drive parameters on the shapes of hypervelocity debris, we take the six main dimensions of the truncated body and the trichrome as the optimization objects, and the mass quality and the speed of the hypervelocity debris as the indicators, to construct a simulation scheme using the he orthogonal design method. The nonlinear explicit dynamics software AUTODYN is applied to simulate the formation of hypervelocity debris, with the simulation results optimized with parameter analyses. It is shown that the major influential factors on the forming speed of the chips are, in descending order, the cone angle of the trichrome, the thickness of the truncated hole, and the thickness of the trochanter; while those on the mass of the chip are the trochanter angle, the thickness of the trochanter, and the truncated hole thickness. In the end, a hypervelocity debris sample with a speed of 11.2 km/s and a mass of 1.452 g is obtained according to the optimal design.