瞬变载荷作用下滑动轴承动特性分析

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The changes of stiffness and damping coefficients of sliding bearing under transient simultaneous solution of the motion equation of bearing and the Reynolds equation, the variation loads were studied. By the of the axis trajectory of the sliding bearing under the transient loads of Gaussian pulse and rectangular pulse was analyzed, and by the solution of the dynamic equation, the stiffness and damping coefficients of the sliding bearing were calculated. The results dynamic coefficients of the sliding bearing are changed greatly under transient loads, which seriously affects movement of the shaft. In the same action time, the damping coefficients of the sliding beating compared rectangular pulse load has a stronger influence on the with the Gaussian pulse load. show that the the rotational stiffness and研究有限宽滑动轴承在瞬变载荷作用下轴承的轴心轨迹以及刚性系数和阻尼系数随时间连续变化的规律。通过将轴承运动方程和雷诺方程联立求解，计算轴承在高斯脉冲、矩形脉冲瞬变载荷作用下的轴心轨迹连续变化规律。通过求解轴承动特性方程，得到刚性系数和阻尼系数的连续变化规律。分析结果表明，轴承在瞬变载荷作用下其动特性系数变化很大。在相同的作用时间内，矩形脉冲载荷对刚度、阻尼系数的影响相对于高斯脉冲更大。