High-speed railway track modal design method for inhibiting train-track coupling resonance

A coupling resonance, high-speed railway technology, applied in the field of rail transit, can solve problems such as resonance, vehicle operation comfort and safety issues, poor mode matching degree, etc., to achieve the effect of avoiding coupling resonance and comprehensive mode matching considerations

Active Publication Date: 2021-07-16
SOUTHWEST JIAOTONG UNIV
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  • Claims
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Problems solved by technology

Among these many structures, the modal response of each structure is different, which leads to vehicle-track resonance if the modal matching is not good, which causes vehicle running comfort and even safety issues

Method used

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  • High-speed railway track modal design method for inhibiting train-track coupling resonance
  • High-speed railway track modal design method for inhibiting train-track coupling resonance
  • High-speed railway track modal design method for inhibiting train-track coupling resonance

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Embodiment

[0034] Example: such as figure 1 As shown, a high-speed railway track modal design method for suppressing vehicle-line coupling resonance, which includes the following operations:

[0035] S1, calculate the vehicle structural mode and track structural mode according to the vehicle and high-speed railway track information;

[0036] High-speed railway track information includes rail structure parameters, track slab structure parameters, and fastener parameters.

[0037] The vehicle structure mode includes the vehicle suspension mode, the vehicle body flexible mode, the frame flexible mode, and the wheel set flexible mode;

[0038] The track structure modes include the rail flexible mode, the track slab flexible mode and the whole track mode.

[0039] The vehicle suspension mode is determined by the suspension stiffness and damping, the mass properties of the vehicle. The vehicle suspension mode can be established by establishing the vibration equation of the vehicle system, a...

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Abstract

The invention discloses a high-speed railway track modal design method for inhibiting train-track coupling resonance, which comprises the following steps of: calculating a vehicle structure modal and a track structure modal according to information of a vehicle and a high-speed railway track, and analyzing whether matching results of the two modals are overlapped or not; if overlapping occurs, recalculating the track modality by changing one or more of the track structure parameters, so that the track structure modality range avoids the vehicle structure modality range; if no overlapping exists, a vehicle-rail rigid-flexible coupling dynamic performance analysis model is constructed, dynamic simulation analysis is conducted on the constructed vehicle-rail rigid-flexible coupling dynamic performance analysis model, whether abnormal vibration caused by resonance exists or not during vehicle running is judged, If the abnormal vibration exists, the vehicle-rail rigid-flexible coupling dynamic performance analysis model is started; according to the method, the vibration influence of the track structure on the vehicle structure is considered from the perspective of resonance, and the method has certain guiding significance on construction or transformation of the high-speed railway.

Description

technical field [0001] The invention belongs to the technical field of rail transit, and in particular relates to a high-speed rail track mode design method for suppressing train-line coupling resonance. Background technique [0002] The vehicle-track is a large system that excites each other, and the overall mode matching degree determines the coupling vibration of the vehicle structure and the track structure, and affects the running stability and safety of the vehicle to a certain extent. In fact, the vehicle structure includes car body structure, suspension structure, frame structure, wheel set structure, and track structure includes rail structure and track plate structure. Among these many structures, the modal response of each structure is different, which leads to vehicle-track resonance if the modal matching is not good, which causes vehicle running comfort and even safety issues. In recent years, with the further planning of high-speed railway construction, more a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F119/14
CPCG06F30/23G06F2119/14Y02T90/00
Inventor 凌亮王开云翟婉明张洋昌超胡彦霖
Owner SOUTHWEST JIAOTONG UNIV
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