Abstract:To study the factors influencing the deformation of waterlubricated rubber stern tube bearing,the deformation of stern tube bearing under different rotational speed,aspect ratio and eccentricity was calculated by using numerical method.The method of orthogonal experiment was used to assess the impact on bearing deformation of different rotational speed,aspect ratio and eccentricity ratios.The results show that the rotational speed,aspect ratio,and eccentricity have a significant impact on the stern tube bearing deformation,and the impact of interaction between them is almost negligible.The impacts of aspect ratio,rotational speed and eccentricity on the stern tube bearing deformation are followed by decline.The influence of rotational speed and aspect ratio on the stern tube bearing deformation is first increased and then decreased,the influence of eccentricity on the stern tube bearing deformation is almost unchanged when it is small,when the eccentricity reached a certain value,the impact on the stern tube bearing deformation is increased significantly.Design of stern tube bearings should give priority to ensuring aspect ratio of stern tube bearing,followed by considering the impact of rotational speed and eccentricity.