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Wang X.,Academy of Amored Forces Engineering | Zhang B.,Academy of Amored Forces Engineering | Zhao Y.,Academy of Amored Forces Engineering | Xu Y.,Academy of Amored Forces Engineering | Xu B.,Academy of Amored Forces Engineering
Advanced Materials Research | Year: 2010

The prepared n-Cu particles with the particle size about 20 nm by KBH 4 reduction method in aqueous solution was surface modified using silane coupling agent. The surface modification mechanics was researched. The tribological performances of n-Cu particles were tested by friction wear test machine. The results show that the modified n-Cu paritcles by silane coupling agent have high purity, good dispersion performances and wonderful surface activity. In friction process, the modified n-Cu particles can form a layer of organic-inorganic compound film with synergistic effect on worn surface, which improves the tribological performances of friction material. © (2010) Trans Tech Publications. Source

Jia J.-F.,Academy of Amored Forces Engineering | Zhang J.-Q.,Academy of Amored Forces Engineering | Zhang J.,Academy of Amored Forces Engineering | Liu Y.-L.,Academy of Amored Forces Engineering | And 2 more authors.
Xitong Fangzhen Xuebao / Journal of System Simulation | Year: 2012

By building a seven-degree-freedom vehicle model, chassis response could be used to evaluate ride comfort of tracked vehicles. Firstly after studying partial wave adding model, pseudo white noise model and AR auto-regressive model, different road roughness was made based on road spectrum and the contrast research on these three methods was made. Then vehicle suspension model with seven degrees of freedom was constructed and the method of ride comfort evaluation was built by Matlab software. After the same vehicle velocity and different road roughness were input at the same time, stochastic excitation under driver seat were compared with deduced comfort boundary. So, the simulation result can be used to evaluate the ride comfort. © copyright. Source

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