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形成尾翼爆炸成型弹丸的贴片方法 被引量:2
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作者 时党勇 张庆明 +1 位作者 翟喆 夏长富 《火工品》 CAS CSCD 北大核心 2009年第6期46-49,共4页
提出一种可形成尾翼爆炸成型弹丸的贴片方法。对典型的尾翼EFP形成技术进行总结,分析贴片方法形成尾翼EFP的原理和特点。对所设计的EFP战斗部进行成型过程、气动力系数和飞行弹道计算。结果表明,采用贴片方法可以形成尾翼EFP,其基本原... 提出一种可形成尾翼爆炸成型弹丸的贴片方法。对典型的尾翼EFP形成技术进行总结,分析贴片方法形成尾翼EFP的原理和特点。对所设计的EFP战斗部进行成型过程、气动力系数和飞行弹道计算。结果表明,采用贴片方法可以形成尾翼EFP,其基本原理是通过使药型罩周边变形产生周期性有规律的速度差异来实现的,尾翼的数量和贴片的数量相匹配,所设计的尾翼EFP具有较高的飞行稳定性和较小的速度降。 展开更多
关键词 尾翼爆炸成型弹丸 贴片方法 LS-DYNA 数值模拟
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Computer-aided Visual Assessment of the Grade of Clothing Fit
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作者 Xu zhijun Wu yishan Xu zengbo 《International English Education Research》 2015年第4期71-72,共2页
The paper first introduces and analyzes the merits and demerits of some traditional methods of evaluating the grade of clothing fit. Then a computer-aided evaluating method is put forward. In this process two groups a... The paper first introduces and analyzes the merits and demerits of some traditional methods of evaluating the grade of clothing fit. Then a computer-aided evaluating method is put forward. In this process two groups are needed. The control group is made up of people who wear maillot while the experimental group consists of those who wear target clothes to be evaluated. People in these two groups are taken photos respectively from front, back and lateral sides. The photos are input computer and receive a series of image processing using Open CV which provides the open source library function including image preprocessing, edge detection and image segmentation, etc. Finally, taking the clothing ease into account, the processed data is used for region matching and evaluating the grade of clothing fit. 展开更多
关键词 Evaluating Grade of Clothing Fit image processing Open CV Computer Vision
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