When shaped charge jet (SCJ) penetrating finite thickness target,penetration depth and armor debris cloud are major determinants ofdamage degree. Especially for the interior equipment and personal ofarmor vehicle, extent of damage mainly related to the armor debris clouddistribution characteristics. A great number of studies on armor debriscloud that generated by SCJ have been done by domestic and foreignscholars. Research methods on this issue have mainly concentrated onnumerical calculation and experiment. Therefore, it is not satisfied due tothe formation mechanism analysis on the armor debris cloud lacked. Inthis paper, the debris cloud that generated during the process of SCJpenetrating target was divided into three parts - front, middle and rear.Theory analysis on the armor debris cloud formation mechanism, space andvelocity distribution had been preliminarily studied based on thepropagation character of shockwave and penetration characteristic of jetpenetration on target. The theoretical calculation results are in goodagreement with experimental results of X-Ray imaging test.
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