齿根等效应力的对比计算  

Comparative calculation of equivalent stress at tooth root

作　　者：何中石 孟令宽 He Zhongshi;Meng Lingkuan(Xiangtan Electric Manufacturing Group Co.,Ltd,Xiangtan 411101,Hunan,China)

机构地区：[1]湖南湘电动力有限公司,湖南湘潭411101

出　　处：《船电技术》2023年第8期69-73,共5页Marine Electric & Electronic Engineering

摘　　要：目前设计一般的齿轮传动时,通常只按保证齿根弯曲疲劳强度以及保证齿面接触疲劳强度两准则进行计算。由实践得知,对于齿面硬度很高,齿芯强度又低的齿轮或材质较脆的齿轮,通常则以保证齿根弯曲疲劳强度为主。本文针对一对齿轮副的齿根等效应力先后采用仿真分析计算方法;第四强度理论计算方法;齿根弯曲疲劳强度的经典计算方法来计算齿根等效应力。发现在本文所设置的载荷条件下,仿真分析计算的结果和齿根弯曲疲劳强度的经典计算方法所得的结果相近。At present,in the design of gear transmission,the calculation of equivalent stress at tooth root is usually carried out based on the two criteria of ensuring its bending fatigue strength and the contact fatigue strength on tooth surface.It is known from practice that for the gear with high hardness of tooth surface and low strength of tooth core or the gear with brittle material,the bending fatigue strength of tooth root should be mainly ensured.In this paper,the equivalent stress at the tooth root of a pair of gears is calculated by simulation analysis method,the Fourth Strength Theory calculation method and the classical calculation method of bending fatigue strength of tooth root.It is found that under the load conditions set in this paper,the results obtained by simulation analysis are similar to those obtained by the classical calculation method of bending fatigue strength of tooth root.

关 键 词：齿轮传动 齿根等效应力 第四强度理论 齿根弯曲疲劳强度 

分 类 号：TH123.4[机械工程—机械设计及理论]