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为研究飞机机轮刹车振动规律,以机轮刹车系统为研究对象,采用振型叠加法,运用大型有限元软件ABAQUS对机轮刹车振动进行了仿真,通过模态分析和动力响应分析,计算出前30阶固有频率和模态,得到了加载条件下的加速度响应曲线。并在刹车试验台架上进行机轮刹车振动试验,对比分析表明有限元计算结果与试验结果基本一致,验证了仿真模型的有效性,得出刹车装置主要部件的加速度响应曲线。通过仿真和试验结果初步得到了刹车振动规律,并为机轮刹车系统设计和改进提供了依据。
In order to study the vibration law of aircraft wheel brake, taking the wheel brake system as the research object, using the modal superposition method, the large-scale finite element software ABAQUS was used to simulate the wheel brake vibration. Through the modal analysis and dynamic response analysis, 30-order natural frequency and modal, the acceleration response curve under load condition is obtained. The wheel brake vibration test is carried out on the brake test bench. The comparative analysis shows that the finite element calculation results are in good agreement with the test results. The validity of the simulation model is verified and the acceleration response curve of the main components of the brake device is obtained. Through the simulation and experimental results, the law of brake vibration is preliminarily obtained, and provides the basis for the design and improvement of the wheel brake system.