摘要
在飞行器发动机振动性能优化建模问题的研究中,发动机悬置系统是飞行器振动系统的一个重要子系统,其性能的优劣直接影响飞行器的整体性能。为解决某航空发动机振动位移过大问题,对悬置系统整体性能进行优化,对橡胶材料的超弹性本构理论和橡胶隔振器的有限元建模技术作了分析,利用Ansys对单个橡胶元件静态特性进行了仿真分析,与试验结果对比验证了仿真结果的可信性,重点研究了隔振器轴向预压缩量对隔振器整体刚度和位移幅值的影响,并对发动机振动传递率、位移幅值和橡胶材料的疲劳特性进行了研究,证明通过选择隔振器最佳的轴向预压缩量,可为优化悬置系统的整体性能提供依据。
In the research of optimization modeling about aircraft engine vibration performance, engine mounting system is an important subsystem in the vibration system of the aircraft, and its performance directly affects the overall performance of the aircraft. To solve the aero - engine problem about too big vibration displacement, the overall system performance optimization was carried out, hyperelastic constitutive theory of rubber materials and finite ele- ment modeling techniques of rubber isolator were analyzed and discussed, and the static characteristics of a single rubber component were analyzed using Ansys, which verified the credibility of the results of the simulation compared with the experimental results. Then, the impact of axial pre - compression on the overall stiffness of the isolator and the displacement amplitude was focused on, and the displacement amplitude, the engine vibration transfer rate and the fatigue properties of rubber materials were studied, which identified that choosing the best axial compression of the vibration isolator can provide the basis for the optimization of the whole performance of the suspension system.
出处
《计算机仿真》
CSCD
北大核心
2014年第2期102-106,共5页
Computer Simulation
基金
中国科学院知识创新工程国防科技创新重要方向项目(YYYJ-1122)
关键词
橡胶隔振器
有限元
刚度
预压缩量
传递率
Rubber isolator
Finite element
Stiffness
Pre - compression
Transfer rate
