| 基于高速摄影视觉测量的静爆破片运动参数测试方法 |
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| 引用本文： | 杜博军,刘泽庆,王亚林,许勇,李乾舞. 基于高速摄影视觉测量的静爆破片运动参数测试方法[J]. 爆炸与冲击, 2019, 39(9): 111-117. DOI: 10.11883/bzycj-2018-0175 |
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| 作者姓名： | 杜博军 刘泽庆 王亚林 许勇 李乾舞 |
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| 作者单位： | 国防科技大学空天科学学院,湖南长沙410073;中国人民解放军63850部队,吉林白城137001;中国人民解放军63850部队,吉林白城,137001;陆军工程大学石家庄校区,河北石家庄,050003 |
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| 摘 要： | 为提高静爆试验中破片初速和速度衰减系数解算的可信度,提出了基于高速摄影视觉测量的静爆破片运动参数测试方法,该方法主要包括高速摄像机数据采集、视觉测量解算破片轨迹、基于运动模型拟合求解三个步骤。试验证明,该方法能够准确获取各破片的初速和速度衰减系数,可信度高,是一种有效的静爆试验破片运动参数测试方法。
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| 关 键 词： | 高速摄影 视觉测量 静爆试验 破片 初速 速度衰减系数 |
| 收稿时间： | 2018-05-24 |
A test method of motion parameters of static explosion based on high-speed photography |
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| DU Bojun,LIU Zeqing,WANG Yalin,XU Yong,LI Qianwu. A test method of motion parameters of static explosion based on high-speed photography[J]. Explosion and Shock Waves, 2019, 39(9): 111-117. DOI: 10.11883/bzycj-2018-0175 |
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| Authors: | DU Bojun LIU Zeqing WANG Yalin XU Yong LI Qianwu |
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| Affiliation: | 1.College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, Hunan, China2.Unit 63850 of PLA, Baicheng 137001, Jilin, China3.Shijiazhuang Campus, Army Engineering University, Shijiazhuang 050003, Hebei, China |
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| Abstract: | In order to increase the reliability to obtain fragments’ velocities and velocity attenuation coefficients in static explosion experiments, a vision-measurement method based on high-speed photography is proposed in this paper. We use high speed cameras to acquire images and visually solve the fragment trajectory. A kinematic model is then applied to fit fragments’ initial velocities and velocity attenuation coefficients. Experimental results show that the test method is valid which can considerably increase the accuracy of the data. |
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| Keywords: | high-speed photography vision measurement static explosion test fragment initial velocity velocity attenuation coefficient |
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