发动机轮盘低循环疲劳寿命试验模拟件设计

Design of simulated specimen for low-cycle fatigue of turbine engine disk

1.
School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2.
Shenyang Aeroengine Research Institute, China Aviation Industry Corporation Ⅰ, Shenyang 110015, China

摘要: 通过研究影响疲劳寿命的众多因素及寿命估算误差较大的原因,得出考核部位的应力梯度也是影响疲劳寿命的重要因素之一,并据此研究了一种模拟件,该模拟件可以根据给定应力曲线,通过优化计算几何参数,使模拟件最大主应力及应力梯度与实际构件考核部位的应力一致.其设计以ANSYS为平台.经实验验证,与实际构件寿命非常接近.该模式为机械部件低循环疲劳试验提供了一种简单且费用很少的方法.
- 航空、航天推进系统 /
- 疲劳 /
- 优化 /
- 应力
Abstract: Based upon the research on many influential factors to the fatigue and bigger estimation error of fatigue,the stress field of actual component was proved to be a key influential factor.Aspecimen was then studied to optimize the geometric parameters through the given stress curve,so that the maximum stress and stress field correspond to the actual component stress field.Based on the platform of ANSYS,it's learnt that the simulation result is very close to the actual component life.This mode provides a simple and cost-effective solution for the component fatigue test.
- aerospace propulsion system /
- fatigue /
- optimize /
- stress

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