长飞片撞击薄靶板结构的定位技术及实验研究  

Location Technique and Experimental Research on Long-Flyer Impacting Sheet Structure

作　　者：郑航[1] 胡晓军[1] 蔡建[1] 

机构地区：[1]中国科学技术大学近代力学系,材料行为和设计重点实验室,合肥230027

出　　处：《实验力学》2009年第4期353-360,共8页Journal of Experimental Mechanics

摘　　要：出于防护机匣被发动机破碎叶片破坏的需求,利用一级轻气炮实验装置对长飞片高速撞击薄靶板结构进行冲击实验和测试方法的研究。实验中使用对靶定位控制技术保证长飞片对靶板撞击的位置准确定位,同时碰撞平面度误差小于10毫弧度,得到了不同撞击参数下薄板击穿性能的实验数据。实验结果表明:薄板的破坏失效模式为隆起-剪切破坏,裂纹出现及发展也主要由于剪切应力造成。本研究可为进一步的相关结构冲击实验及测试方法提供参考。Due to the requirement of casing protection from engine crumbling blade, a series of structural experiments of long-flyer impacting sheet structure were carried out on a one-stage gas-gun device. In the experiment, location control technique was used to ensure that long-flyer impacts the target sheet at an accurate location and the collision plane error is less than 10 milliradian. Experimental data of thin plate breakthrough performance under different impact parameters were obtained. Results show that thin plate failure mode is hunch-shear breakage; crack emergence and development are mainly due to the shear stress. This research may provide a reference for further experimental impact study.

关 键 词：薄板 结构冲击 定位控制技术 剪切破坏 

分 类 号：O348.2[理学—固体力学]