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<title cf:type="text"><![CDATA[Editorial department of the Journal of National University of Defense Technology -->南京理工大学]]></title>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Coupling effects of multi-axles interconnected hydropneumatic suspension of launch vehicle]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202304015]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Heavy missile launchers mostly use 4-axles linked dual-chamber HPS(hydropneumatic suspension), in order to study their linkage coupling effect for the reference of launcher design. The simulation models of an interconnected HPS of two-axles and four-axles were built based on the mathematic model and AMESim software. Based on this, the influence of the coupling effect of the multi-axles connected twin-accumulator HPS system was analyzed under several different excitation frequencies. The results show that even under low-frequency excitation, the multi-axis interconnected HPS has obvious damping characteristics. Compared with the two-axles interconnected HPS system, the external characteristics of the four-axles interconnected HPS system have advantages. The external characteristics of the connected HPS system are more intense when excited by low frequency and good when excited by high frequency, indicating that the system can attenuate the asynchronous vibration of the system when it is in a high frequency environment.]]></description>
<pubDate>2023/7/20 16:28:59</pubDate>
<category><![CDATA[南京理工大学]]></category>
<author><![CDATA[REN Jie, LIU Yangzuo, MA Dawei]]></author>
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<atom:name>REN Jie, LIU Yangzuo, MA Dawei</atom:name>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Muzzle vibration analysis and stability control of wheeled assault gun firing on the move]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202304016]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to investigate the impact laws of different factors on the muzzle vibration, a multi-body dynamic model of the wheeled assault gun firing on the move was established and verified with experimental results. A road-surface spectrum model was built by using the harmonic superposition method, and the model was calculated under different road conditions and fire line heights. The influence of these two factors on the muzzle vibration was obtained. The model of a vertical stabilizer was set up, and the co-simulation was carried out to compare the muzzle vibration with and without stabilizers. The research results show that:the muzzle vibration amplitude increases with the increase of road roughness; the influence of fire line heights on muzzle vibration is nonlinear; the vertical stabilizer can effectively control muzzle vibration. Compared to the situation without stabilizer, the maximum muzzle altitude angle and altitude angle velocity amplitudes before firing decrease by 94.1% and 97.4% respectively, and the altitude angle amplitude of the muzzle after firing decreases by 16.2%. This research has certain reference significance for the overall design and engineering application of the wheeled assault gun.]]></description>
<pubDate>2023/7/20 16:28:59</pubDate>
<category><![CDATA[南京理工大学]]></category>
<author><![CDATA[GE Jianli, DENG Yuanbo, WANG Zongfan, ZHANG Yipin, YANG Guolai]]></author>
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<atom:name>GE Jianli, DENG Yuanbo, WANG Zongfan, ZHANG Yipin, YANG Guolai</atom:name>
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