摘要
针对涡扇发动机轴向弹性环(安装于4#轴承前端,起轴向定位作用)使用后存在较大残余变形导致轴向定位不可靠的问题,通过力学解析法和有限元计算方法相结合的方式,提出了轴向弹性环优化目标函数,对该轴向弹性环的应力、刚度进行优化设计,得到了符合工作条件相对合理的优化方案。相对于原弹性环,优化后的弹性环工作后残余变形明显减小,有效解决了4#支点处轴向定位不可靠的问题。此优化方法可为其他类似弹性环的优化提供参考。
In order to solve the problem of axial misalignment caused by large residual deformation of turbofan engine axial elastic ring(installing in front of No.4 bearing to play the role of axial positioning)after operation,an optimization objective function of the axial elastic ring was proposed by combining mechanical analysis with finite element method,of which the strength and stiffness of the axial elastic ring were optimized,and a relatively reasonable optimization scheme under real working conditions was formed.Compared with the original elastic ring,the residual deformation and plastic strain of the optimized elastic ring are obviously less after operation,and the problem of axial misalignment at the No.4 fulcrum of engine is solved.This optimization method can provide a reference for similar elastic ring optimization.
作者
卢玲玲
于进学
LU Ling-ling;YU Jin-xue(AECC Sichuan Gas Turbine Establishment,Chengdu 610500,China)
出处
《燃气涡轮试验与研究》
北大核心
2018年第5期26-30,共5页
Gas Turbine Experiment and Research
关键词
航空发动机
轴向弹性环
弹塑性
优化设计
残余变形
aero-engine
axial elastic ring
elasto-plasticity
optimization design
residual deformation
