Stress Response and Fatigue Damage Evaluation of Motor Suspension Seat of High-speed EMU
In order to study the stress response of the motor suspension seat of the high-speed EMU under different working conditions,the dynamic stress of the motor suspension seat of the high-speed EMU running on the Beijing Guangzhou high-speed railway line was tested,and the stress response under different measuring points,different mileage,different working conditions and different operating intervals was compared and analyzed using mathematical statistics.The research results show that:with the increase of the service mileage of the EMU,the stress level at the motor suspension seat has no obvious change,and the stress response intensity of the area where the measuring point DJ4 is located is significantly higher than that of other areas of the motor suspension seat;The stress response of the train changes significantly during starting acceleration and braking deceleration,while the stress response is relatively stable during constant speed operation,and the equivalent stress of the motor suspension seat under the condition of constant speed operation is higher than that under the conditions of starting acceleration and braking deceleration;The equivalent stress of the motor suspension seat measuring point in Wuhan Guangzhou section is significantly higher than that in Beijing Zhengzhou and Zhengzhou Wuhan sections under different operating conditions;The influence of wheel lathing on the equivalent stress at the motor suspension seat is limited.
万方数据
维普
