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分析了渐开线直齿轮啮合弹流润滑的非稳态参数，推导了其弹流润滑方程组，并沿整个啮合线上作了完全的数值解，指出了齿轮啮合弹流润滑应考虑非稳态效应。
The unsteady parameters of involute spur gear meshing elastohydrodynamic lubrication are analyzed and the equations of the elastohydrodynamic lubrication are deduced. The complete numerical solution is given along the entire meshing line. It is pointed out that gear meshing elastohydrodynamic lubrication should be considered unsteady State effect.