超空泡模型对固态介质侵彻及影响因素实验研究

为了获得超空泡模型对固态介质侵彻现象及相关力学特性的影响因素，采用实验方法对侵彻速度、弹头形状、通气等因素进行了研究。实验采用空气炮获得模型侵彻固体介质的初速，利用高速摄像系统获得直观的超空泡生成过程图像，通过图像处理获得侵彻过程运动参数。实验首先在匀质固体中成功获得超空泡模型侵彻现象，在此基础上进行了侵彻速度与不同头形的系列侵彻实验，获得了空泡形态、减速特性以及各影响因素的影响规律。借鉴水下通气超空泡的概念，设计了通气头形，并进行了不同通气量下的侵彻实验，验证了弹头通气有助于空泡生成的结论。

Experimental Investigation on the Supercavitation models Penetrating into Solid Medium and the Influence Factors

To obtain the supercavitation models penetrating into solid medium and the influence factors of mechanical properties, including the penetration velocity, penerator shape and ventilation, a series of experiments are carried out using a transparent silicone box. The penetrators are launched by air cannon, and the penetration processes are recorded by a high speed camera. The penetration velocity is obtained through image processing and analysis. In the first experiment, the penetration phenomenon of supercavitation models was successfully obtained. And then a series of experiments for different head-shapes of penetrators were carried out at different penetration speed. The effects of the influence factors on the supercavity profiles and the deceleration characteristics are analyzed. Referring to underwater ventilation supercavitation concept, a new penetrator whith ventilation is designed to test the supercavitating penetration under ventilation , which finally confirms that ventilation is benefit for the generation of supercavity and helps to prolong the penetration depth.