Bearing loads of dual rotor-bearing system under stationary and transient conditions

Aimed at aeroengine vibration failure, bearing loads of dual rotor-bearing system caused by unbalance are calculated under stationary and transient conditions. The three-dimensional (3-D) finite element method (FEM) model of dual rotor-bearing system was established. Applying the rotor dynamics function of Ansys 12.0, bearing loads were calculated under various unbalance force in stationary condition, and the transient vibration characteristics and the effect of acceleration on bearing loads were discussed. On the basis of simulation results, the influence disciplines of unbalance on bearing loads and theoretic reference for reducing bearing loads during start-up were obtained.     

汽车空气悬架平顺性仿真研究

基于整车模型和路面模型,进行了空气弹簧麦弗逊悬架和螺旋弹簧麦弗逊悬架的仿真研究及电控空气悬架在不同路面下最优阻尼匹配特性的主动控制研究.结果显示,在减振器成本不大的情况下,空气悬架在汽车平顺性方面有很大优势,电控空气悬架的最优阻尼匹配特性的研究为其控制策略的研究提供一定的理论基础.