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针对航空发动机振动故障率较高的问题,计算分析双转子-支承系统在碰摩-不平衡故障下的轴承支反力并研究其影响因素.建立了双转子-支承系统和高压涡轮-机匣碰摩的三维有限元模型,利用Ansys 12.0计算了双转子-支承系统在碰摩力和不平衡量引起的简谐激振力作用下的轴承支反力.通过计算多种工况下的动态轴承支反力,获得了碰摩和不平衡量的分布及大小对轴承支反力的影响规律.
Aiming at the problem of high failure rate of aeroengine vibration, the bearing support force of double rotor-support system under rub-up-unbalance failure is calculated and analyzed, and the dual-rotor-support system and high-pressure turbine- The three-dimensional finite element model of the rub-impact was used to calculate the bearing support force of double-rotor-bearing system under the simple harmonic excitation force caused by the rubbing force and the unbalance amount by Ansys 12.0.According to the dynamic bearing Support force, get rubbing and unbalance distribution and size of the bearing support force.