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含能材料  2014 

电流激励Ni-Cr桥带式电火工品发火模型

DOI: 10.11943/j.issn.1006-9941.2014.06.021

Keywords: 军事化学与烟火技术,Ni-Cr桥带,发火模型,换能机理,临界发火电流

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Abstract:

为优化设计桥带式电火工品,研究了其换能发火模型,基于傅里叶传热定律,建立了Ni-Cr金属桥带电火工品发火的数理模型,并给出了临界发火电流的理论计算方法。在5min和50ms恒流激励下,采用D-最优化法测试了两种不同尺寸Ni-Cr桥带的临界发火电流,将测试结果与理论计算值进行了对比,结果表明两者的误差在14%以内,数理模型合理,可用于设计和计算Ni-Cr桥带式电火工品的临界发火电流。

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