用短轴承理论近似分析有限长轴承，只适用于宽径比比较小的情况（＜ ０．２）．在短轴承理论基础上结合Ｇａｌｅｒｋｉｎ 方法首次给出了有限长轴承非稳态油膜力的近似公式．既保留了由短轴承理论所给出公式的简单性，又使其在很大宽径比（＜ １．２）范围内具有很高的精度，以满足工程的需要．最后进行了实例计算 Approximate analysis of finite-length bearings using the short bearing theory is only suitable for cases with small aspect ratios (<0.2). Based on the short bearing theory and the Galerkin method, the approximate formula of unsteady oil film force of finite bearing is given for the first time. It not only retains the simplicity of the formula given by the short bearing theory, but also enables it to meet the engineering needs in a wide aspect ratio (<1.2). Finally, an example calculation