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人字齿轮传动的动态特性分析 总被引:6,自引:0,他引:6
为了降低人字齿轮传动的振动噪声,对其动态特性进行研究.在综合考虑轮齿刚度激励、误差激励和啮合冲击激励的基础上,应用集中参数法建立人字齿轮弯-扭-轴耦合的动力学模型.根据牛顿力学定律,推导出相应的运动微分方程.讨论了各种激励和轮齿修形对人字齿轮动态特性的影响.以一对人字齿轮为例进行动态试验,结果表明,修形前后齿轮箱的结构... 相似文献
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S. Praveen P.K. Chattopadhyay P. Albert V.G. Dalvi B.C. Chakraborty S. Chattopadhyay 《Composites Part A》2009,40(3):309-316
Styrene butadiene rubber (SBR) based hybrid nanocomposites containing carbon black (CB) and organo-modified nanoclay (NC) was prepared. X-ray diffraction (XRD) and transmission electron microscopy (TEM) revealed the presence of intercalated, aggregated, and partially exfoliated structures. Incorporating 10 phr NC to the control SBR containing 20 phr CB resulted 153% increase in tensile strength, 157% increase in elongation at break and 144% stress improvement at 100% strain, which showed synergistic effect between the fillers. The dynamic modulus reinforcement of nanocomposites was examined by the Guth, Modified Guth, and Halpin–Tsai equations. For predicting CB filled nanocomposite modulus, the contribution of modified intercalated structure of clay and the ‘nano-unit’ (dual structure) comprising CB–NC should be considered. 相似文献
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