W-Mo-Ti-Mg体系阻抗梯度飞片无冲击驱动过程数值分析  

Numerical analysis on complex loadings and shockless compressions of the W-Mo-Ti-Mg graded impedance impactor

作　　者：柏劲松[1] 沈强[2] 唐蜜[1] 罗国强[1,2] 

机构地区：[1]中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室,绵阳621900 [2]武汉理工大学材料复合新技术国家重点实验室,武汉430070

出　　处：《振动与冲击》2010年第6期72-75,共4页Journal of Vibration and Shock

基　　金：中国工程物理研究院科学技术发展基金(2008B0202011);国防科技工业技术基础质量与可靠性项目(Z112009B004)

摘　　要：对于W-Mo-Ti-Mg复合体系材料,给出了一种按指数规律变化的阻抗梯度飞片厚度计算公式,飞片厚度从高阻抗到低阻抗遵循逐渐递减规律。针对20层准连续性阻抗梯度飞片,在两种不同的阻抗分布情况下,给出了针对1.0mm铜样品准等熵加载过程的计算结果,同时通过在飞片末端增加几层更低阻抗材料,实现了对铜样品的无冲击驱动。For the W-Mo-Ti-Mg composition,an exponential formula for computation of each layer's thickness of the graded impedance impactor was presented.The thickness of each layer increases with the increase of impedance.For a 20 layers quasi-continuum graded impedance impactor,the computational results of complex loading and quasi-isentropic compression of 1.0 mm thickness copper sample were provided under 2 different impedance distributions.By adding several layers of lower impedance materials at the end of the impactor,the shockless compression to the copper sample is achieved.

关 键 词：阻抗梯度飞片 复杂加载 气炮 无冲击驱动 数值计算 

分 类 号：O35[理学—流体力学] O347.1[理学—力学]