【摘要】 用液体炸药滑移内爆加载方式,研究了不同炸药厚度和外壳条件下20钢圆管的内聚变形和破坏特征。实验中,钢管发生了较大径向应变,应变值大致随炸药厚度的增加而线性增大。在炸药厚度不低于3mm时钢管变形均匀,轴对称较好;药厚小于3mm时其变形不再是基本轴对称收缩,管子表面出现扭转褶皱。各种装药厚度下,均未观察到预期的层裂破坏。对未层裂的原因进行了初步分析。更多还原

【Abstract】 By using methods of sliding implosion, the converging deformation and fracture characteristics of the cylindrical steel tube were researched, which was loaded by liquid explosive nitromethane (CH(3)NO(2)) with different thickness and under different outer-shell conditions. The results show that the large deformation of the steel tube increases linearly with the explosive’s thickness approximately. Even and symmetrical deformations are observed when explosive thickness are 5mm, 4mm and 3mm. The deformations are torsional instead of symmetrical when explosive thickness is less than 3mm. Expected spallation hasn’t been observed in all these experiments. Analysis has been done for the reason of no spallation.更多还原