航空发动机承力系统结构效率评估方法

马艳红; 曹冲; 李鑫; 洪杰

doi:10.13224/j.cnki.jasp.2016.02.003

航空发动机承力系统结构效率评估方法

doi: 10.13224/j.cnki.jasp.2016.02.003

1. 北京航空航天大学能源与动力工程学院, 北京 100191;
2. 中国航空工业集团公司中国航空动力机械研究所, 湖南株洲 412002

详细信息

作者简介:
马艳红(1975-),女,辽宁铁岭人,教授、博士生导师,博士,主要从事航空发动机整机动力学,旋转机械振动控制,智能结构与新型阻尼材料方面的研究.

中图分类号: V231.9
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出版历程
- 收稿日期: 2014-06-04
- 刊出日期: 2016-02-28

Assessment method of structural efficiency on bearing system in aero-engine

1. School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. China Aviation Powerplant Research Institute, Aviation Industry Corporation of China, Zhuzhou Hunan 412002, China

摘要

摘要: 针对航空发动机承力系统结构与力学特征,结合承力系统结构功能和设计要求,提出了承力系统的结构效率评估方法.通过应力分布系数、等效比刚度、刚度温度敏感度、振动位移传递系数等参数来评估结构的承载能力、抗变形能力、力学环境适应能力.以涡桨发动机涡轮级间承力框架的两种结构设计方案为对象,进行了结构效率的评估.结果表明:方案A结构效率比方案B高 39.6%,所选各结构效率评估参数均位于合理水平,能够定量反映出两方案的结构设计特点与优劣所在,验证了该评估方法的有效性.
- 航空发动机 /
- 承力系统 /
- 结构效率 /
- 优化设计 /
- 评估参数
Abstract: Targeting the structural and mechanical characteristics of aero-engine bearing system, a structural efficiency evaluation method was proposed based on the system's structural function and design requirements. Stress distribution coefficient, vibration equivalent specific stiffness, stiffness sensitivity to temperature, and isolation coefficient were used to assess the bearing capacity, resistance to deformation and dynamic environment adaptability of the structure. A structural efficiency assessment on two design schemes of the turbine inter-stage bearing frame for turbopropeller engine was conducted. Result indicates that the structural efficiency of design A is 39.6% greater than design B. Those assessment parameters are at a reasonable level, and can quantitatively reflect the advantages and disadvantages of two schemes. The result proves the validity of the assessment method.
- aero-engine /
- bearing system /
- structural efficiency /
- optimal design /
- assessment parameters

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参考文献(18)

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