船用齿轮齿根弯曲疲劳强度计算  

The calculation for the bending fatigue strength of tooth roots for marine gearings

作　　者：徐辅仁[1] 隋鹏[1] 范小钢[1] 全世欣[1] 卜文杰[1] 

机构地区：[1]上海理工大学机械工程学院,上海200093

出　　处：《舰船科学技术》2005年第1期33-35,共3页Ship Science and Technology

基　　金：上海市科学技术委员会资助项目(02ZF14064)

摘　　要：船舶在波浪中航行时船体会发生中拱及中垂弯曲变形。船体变形会导致沿船体纵向布置的齿轮机 构的轴承支座中心距产生缩减。这种中心距的缩减会使齿轮机构处于双面啮合状态,从而在互相啮合的两齿轮间产 生附加径向压力。本文分析了包括这种附加径向力在内的实际外载荷作用下轮齿危险剖面上的弯曲疲劳应力,并提 出一组船用齿轮齿根弯曲疲劳强度计算公式。A ship navigating in waves will conduce sagging and hogging bending deformations. The total bending deformations of the ship may make the bearing center distance of the gearing arranged along the ship longitudinal direction reduced. This reduction of the bearing center distance will lead to create additional radial pressures between teeth of meshing gears, thus make the gearing operate under the condition for both profile surfaces of the tooth to engage. This article analyzes the bending fatigue stress on the tooth root involving the effect of the additional radial pressures under this condition, and brings forward a group of equations for the determination of the bending fatigue stresses of the marine gearing under this working condition.

关 键 词：船用齿轮机构 附加径向力 双面啮合工作状态 弯曲疲劳 

分 类 号：U661.4[交通运输工程—船舶及航道工程] U664[交通运输工程—船舶与海洋工程]