为了研究大型商船推进轴系静态条件下尾管后轴承和螺旋桨轴的接触情况，建立了推进轴系校中计算的有限元模型.将尾管后轴承分成多个轴承分段，分别使用Hertz和Winkler 2种接触模型来模拟各个轴承段和轴段之间的接触形态，作为梁单元的非线性支撑边界条件，并使用迭代法求解有限元模型.数值计算结果表明：2种接触模型在后轴承接触范围的计算结果是基本一致的，但Winkler接触模型刚度较Hertz接触模型高，接触区域小，负荷分布集中.Hertz接触模型接触范围较大，不能满足Hertz接触模型成立的前提条件，因此在尾管后轴承的接触计算中，存在一定的局限性.
In order to investigate the contact status between after stern tube bearing and propeller shaft of large merchant ships in static condition, the FE model of shaft alignment for propulsion shaft was built by beam element, where the stern tube bearing was divided into several sections. As non-linear support boundary condition of beam element, both Hertz and Winkler elastic contact model were used to simulate contact status between each shaft bearing and shaft. The FE model was solved by iterative method. In accordance with the calculation results, it was revealed that two methods had similar outcomes in the contact area of after stern tube bearing, but the contact stiffness of Winkler contact model, with smaller contact area and more concentrative force, was higher than Hertz contact model. And the contact area of Hertz contact model was larger, and could not fulfil the prerequisite of Hertz contact model, so it might result in limitation in after stern tube bearing contact calculation.
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