直升机金属动部件延寿技术研究  

The Helicopter Metal Dynamic Component Life Prolonging Technique Research

作　　者：熊欣[1] 李建伟 喻溅鉴[1] 

机构地区：[1]中国直升机设计研究所,江西景德镇333001 [2]陆航军代局驻景德镇地区军代室,江西景德镇333000

出　　处：《直升机技术》2018年第1期45-48,54,共5页Helicopter Technique

摘　　要：研究了直升机金属动部件的延寿方法。首先分别从外部环境、疲劳抗力和疲劳评估方法三个角度提出了动部件的延寿方案。而后以某型机主桨毂轴颈延寿作为典型案例,一方面采用提高表面抗力的方法提高安全疲劳寿命,同时采用损伤容限评估方法计算裂纹扩展寿命,通过增加检查周期的方法显著提高了使用寿命。This paper studied the methods for prolonging the service life of helicopter dynamic com- ponents. First of all, life extension program of moving parts were proposed from three aspects, the outside environment, fatigue resistance and fatigue strength evaluation . Then based on the typical case of prolonging a helicopter main hub shaft life , on the one hand, the surface resistance was im- proved to prolong the safety fatigue life. On the other hand, the crack growth life was calculated by damage tolerance method, and the service life was improved obviously by increasing inspection cy- cles.

关 键 词：直升机 动部件 延寿 损伤容限 

分 类 号：V215.2[航空宇航科学与技术—航空宇航推进理论与工程]