The Reynolds lubrication equation including oil film inertia is developed, in which the inertiacoefficient is introduced to investigate the effect of oil film inertia.
新的模型借助惯性系数，引入了油膜惯性项；同时给出求解含有油膜惯性项的迭代步骤和有限元表达式。
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Secondly, the relationship between rotary inertiacoefficient, torsional stiffness, transmission gearbox and torsional vibration frequency is analyzed on the basis of the design model.
The generalized force and generalized inertiacoefficient may also be calculated by finite difference method, and so the actual motion of mechanisms subjected to known active forces may be analyzed.