Vehicle part vibration characteristic obtaining method in train derailment behavior process
A vehicle component and acquisition method technology, applied in the direction of instruments, electrical digital data processing, geometric CAD, etc., can solve the problems of high cost, limited derailment of test, and high potential risk of experiment, and achieve the effect of low cost
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[0084] Embodiment 1: Carry out imitation example to Puyuma train derailment
[0085] According to the inertial parameters, geometric parameters, wheel-rail parameters, etc. of the car, a simplified train model in which two cars are connected through the coupler buffer device is established (such as figure 2 shown). The wheel radius is set to 0.43m, the wheel set tread is selected as LM type, the rail type is selected as 60kg rail, and the rail bottom slope is set to 1:40;
[0086] The orbital excitation of the model is set to American Class 5 Spectrum (AAR5). In the multi-body dynamics model of the vehicle, virtual sensors are set up for the wheelset and bogie, and each virtual sensor can collect acceleration, angular acceleration, velocity, rotational speed, displacement and rotation angle of 6 degrees of freedom. The virtual sensor sampling frequency is 2kHz;
[0087] Set the gauge to the standard gauge mode (1.435m), and set the track irregularity level to American Grad...
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