纳米RDX、HMX摩擦感度临界能量试验与分析

时间:2017-12-06 19:49来源:毕业论文
论文选取具有代表性的炸药纳米RDX和纳米HMX,作为研究对象,采用理论、实验和数值模拟相结合的方法,对摩擦感度和临界能量进行了研究
摘要近年来炸药的超细化在越来越多的领域中得到运用,炸药在机械撞击、摩擦作用下意外点火是造成其安全事故的重要原因,随之爆炸产生的冲击波又是炸药药剂之间殉爆和事故扩大化的主要原因。炸药药剂在摩擦的作用下发生爆炸的难易程度称为摩擦感度,因此深入研究炸药的摩擦感度和冲击起爆过程,对于其安全性评估和意外事故的预防具有重要意义。本重庆时时彩的规律选取具有代表性的炸药纳米RDX和纳米HMX,作为研究对象,采用理论、实验和数值模拟相结合的方法,对摩擦感度和临界能量进行了研究,为确保进一步安全使用超细化炸药提供参考依据。16214
炸药药剂的动摩擦系数是衡量其在摩擦作用下试样能量获得的最关键参数,药剂获得的能量,是摩擦感度实验中比较不同实验条件的相对强弱,并且进一步研究其摩擦感度的基础条件。为此以摩擦感度测试仪的物理模型为基础,结合理论分析及数据整理和计算,得到了试样动摩擦系数和计算其获得能量的方法。运用用此方法测算得到了该两种超细炸药药剂的动摩擦系数,以及两种试样在不同实验条件下获得的能量,并研究了表压、摆角、动摩擦系数对试样最终获得能量的影响和变化。结果可以得到:测算的药品动摩擦系数为一个范围值;常用摩擦感度测试条件中,试样最终获得的能量以及能量增大的速率有这样的规律70°,1.23MPa < 66°,2.45MPa < 80°,2.5MPa < 90°,3.92MPa < 96°,4.9MPa;并且研究发现能量随着滑动速度和正压力的增加有逐渐增大的趋势;
关键词:超细炸药  摩擦感度  动摩擦系数  能量
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Title    Nano RDX, HMX critical energy friction sensitivity test And analysis
Abstract
In recent years, the use of explosives ultrafine get explosives in more and more areas under mechanical shock, friction is an important cause of accidental ignition safety incidents, followed by an explosion shock wave is generated between martyrdom explosives Pharmacy the main reason for the explosion and expansion accident . Friction sensitivity and ease of shock initiation process agents exploded dynamite in the role of friction is called friction sensitivity , so in-depth study of explosives , to assess its safety and prevention of accidents is important. In this paper, nano- selected sample of RDX explosives and nano- HMX, as the object of study, theoretical , experimental and numerical simulation method, the friction sensitivity and critical energy were studied further to provide a reference for ensuring the safe use of explosives ultrafine basis.
Dynamic coefficient of friction of explosives Pharmacy is a measure of the most critical parameters of its sample energy obtained under friction , energy agents obtained a friction sensitivity experiments relative strength comparison of different experimental conditions , and further study the basic conditions for its sense of friction degrees . For this physical model friction sensitivity tester , based on theoretical analysis and data processing and calculation , obtained samples and calculate the dynamic friction coefficient method to obtain energy . Use this method to get the dynamic friction coefficient is estimated that two ultrafine explosive agents , as well as the energy of two samples obtained under different experimental conditions , and to study the gauge pressure, tilt angle , the dynamic friction coefficient of the sample ultimately energy influence and change. Results obtained : drug measure a dynamic friction coefficient range of values of ; common friction sensitivity test conditions , the rate of increase of energy and the energy of the finally obtained sample such law 70 °, 1.23MPa <66 °, 2.45MPa <80 °, 2.5MPa <90 °, 3.92MPa <96 °, 4.9MPa; energy and was found to increase as the slide speed and positive pressure tends to increase gradually ; 纳米RDX、HMX摩擦感度临界能量试验与分析:/a/huaxue/20171206/17478.html
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