轴对称钢管爆炸压实的能量与变形

轴对称零件的粉末爆炸压实,是利用炸药产生的有效冲击能引起装粉套筒塑性变形,导致粉末致密.粉末压实所需真实能量的多少,不仅与容器的质量和径向速度有关.对所给予的总冲击能来说,由容器的材料和几何形状来决定.在混合粉和复合粉爆炸压实工艺的广泛研究中,容器外径收缩和炸药/容器质量比之间的关系,及总应变与冲击能之间的关系均由实验方法确定,与计算的能量值进行比较,预计零件的压缩变形和所承受的冲击能,可以进一步了解容器在爆炸冲击载荷下的变化.

Energy and deformation in explosive compaction with axisymmetrical steel tubes

Explosive compactions of powder in axisymmetrical tubes are to utilize the available explosive impact energy to deform plastically the cylindrical powder containers and thereby densify the contents. The required actual energy for powder compacting depends not only on the mass and radial velocity of the containers, but also, for the given overall impact energy, on the material and geometry of the containers. The relationships between the reduction of outer diameter of the containers and the ratio of the explosive mass to the tube mass, and the relationships between the overall strain and the impact energy have been established experimentally, which are compared with the calculated energy values to estimate the compression deformation and the exerted impact energy of the parts, and by which the changes of the containers under the condition of explosive impact loading can be further understood.