爆炸驱动变壁厚圆管外表面速度的测量

Measurement of Velocities of Points on the Outside Surface of a Blast Driven Cylinder Having Varying Thickness

应用转镜式高速摄影仪，对变壁厚圆管外表面各点进行二维拉格朗日速度的测定，得到了速度的不定常增长历史．在假设驱动加速过程具有指数加速模型的基础上，寻出了管壁驱动速度ｖ，最大抛掷角δ０和特征加速时间τ的半经验公式．

Through the use of a high sped streak camera, camera the two dimensional Lagrangian velocities of points on the outside surface of a cylinder having varying thickness and driven by detonation, and have obtained history of unshady increase of velocity. Depending upon th assumption of an exponential model of velocity increase,this paper deduces the semiempirical formula for the drived velocity of the cylinfor surface v, the maximum projection angle δ0and the characteristic acceleration time .