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航空学报  2013 

飞机拦阻索动态特性研究

DOI: 10.7527/S1000-6893.2013.0143, PP. 833-839

Keywords: 拦阻索,动力学,有限元法,接触碰撞,液压系统

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Abstract:

为了分析飞机拦阻索在拦阻过程中复杂的动态特性,将拦阻索视为空间柔性钢索,液压吸能系统和缓冲系统经过线性拟合,作为传动索的约束条件,通过具有弹性和阻尼特性的梁单元加载在拦阻系统模型中,同时考虑了柔性钢索与刚性支撑体之间的接触碰撞作用,在有限元分析软件LS_DYNA中建立了拦阻系统的碰撞动力学模型,并进行了仿真研究。研究结果表明,飞机尾钩挂索后,在拦阻索与甲板滑轮之间存在连续震荡衰减的应力波,当来自于甲板滑轮的初次反射波到达钩索啮合点时,拦阻力达到极值。

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