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针对某装甲车辆动力传动系统的主轴在行驶过程中极易出现故障的问题,以机械故障综合模拟实验台为研究对象,建立了其正常转子、裂纹转子以及弯曲转子的三维实体模型,运用ANSYS、ADAMS动力学仿真软件对转子系统进行了动力学仿真,得到了正常转子在刚体和柔性体状态下的位移响应曲线和碰撞力响应曲线,在此基础上,对裂纹转子和弯曲转子在柔性体状态下进行了仿真,得到了相应故障状态下的时频响应曲线,直观地揭示了柔性转子系统的动态特性,仿真和实验结果表明,在柔性转子系统中,转子中心振动位移变大,系统碰撞力降低;转子发生裂纹或弯曲故障时,振动强度会增大,这为后续装甲车辆传动系统主轴故障诊断提供一定的理论指导。
Aiming at the problem that the main shaft of an armored vehicle power transmission system is prone to breakdown during driving, a three-dimensional solid model of a normal rotor, a cracked rotor and a curved rotor is established by taking a mechanical failure comprehensive simulation testbed as an object of study. By using ANSYS, The dynamic simulation of the rotor system is carried out by ADAMS dynamic simulation software, and the displacement response curve and the impact response curve of the normal rotor under rigid body and flexible body state are obtained. Based on this, the crack rotor and the bending rotor are simulated in flexible body state The simulation results and the experimental results show that in the flexible rotor system, the rotor center vibration displacement becomes larger and the system collision force The vibration intensity will increase when the rotor cracks or bends, which will provide some theoretical guidance for the spindle fault diagnosis of the following armored vehicle transmission system.