航空发动机叶片丢失问题研究综述

对近年来航空发动机叶片丢失问题的研究进展进行了综述.简述了叶片丢失过程相关的力学问题,重点探讨了叶片丢失激励下转子和整机结构系统的瞬态动力特性以及持续生存能力方面的力学机理、数值仿真和试验研究成果,包括叶片丢失过程中的载荷及力学行为、整机动力学建模和求解技术、整机和机理性的试验研究等.研究表明:对于恶劣载荷环境下复杂结构系统,需要以整机系统为研究对象并考虑载荷时效特征,通过结构和动力学安全性设计策略提升结构完整性和可靠性. 

Review on the blade loss of aero-engine

Research progress on the blade loss of aero-engine was reviewed in recent years. The mechanical problems related to the blade loss process were outlined. The mechanical mechanism, numerical simulation and the test study of the transient dynamical characteristic and survival ability due to blade loss in the rotor and whole aero-engine structural system were discussed emphatically. The studies involved the load and mechanical behavior, the techniques of modeling and calculation, the test of mechanism and the whole aero-engine. The results show that it's necessary to take the whole aero-engine system as object and consider the load aging characteristic of the complex structural system in severe environment. The structural integrity and reliability can be improved by structural and dynamical design strategy.