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Measurement method and device for six-component aerodynamic force of high-speed train dynamic model

A high-speed train, six-component technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as the lack of high-speed dynamic model aerodynamic technology solutions

Active Publication Date: 2019-02-19
INST OF MECHANICS - CHINESE ACAD OF SCI +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] However, in the prior art, there is a lack of relevant technical solutions for high-speed dynamic model aerodynamic measurement in dynamic model experiments

Method used

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  • Measurement method and device for six-component aerodynamic force of high-speed train dynamic model
  • Measurement method and device for six-component aerodynamic force of high-speed train dynamic model
  • Measurement method and device for six-component aerodynamic force of high-speed train dynamic model

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Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] In order to facilitate the understanding of the embodiments of the present invention, further explanations will be given below with specific embodiments in conjunction with the accompanying drawings, which are not intended to limit the embodiments of the present invention.

[0046] figure 1 For the implementation of the present invent...

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Abstract

The embodiment of the invention relates to a measurement method and device for six-component aerodynamic force of a high-speed train dynamic model. The method comprises: Based on Lagrangian mechanicsand D 'Alembert principle, establishing a viscoelastic dynamic equation for the vibration of the car body relative to the sliding beam when the measuring object is gliding on the track; The measuringobject comprises: a measuring structure system composed of a high-speed train dynamic model and a double-expansion balance, which is installed on a traction sliding beam; the dynamic equation comprises six-component coordinates of a reference point and a measuring point in a coordinate system; Determining a balance relationship between the six-component inertial force, the support force and the aerodynamic force according to the dynamic equation, and determining an inertial compensation rule of the six-component aerodynamic force; The six-component aerodynamic force of the high-speed train dynamic model can be measured in the dynamic model experiment by acquiring the six-component supporting force, measuring the six-component acceleration of the point and acquiring the six-component inertial force through the mass matrix, and then determining the six-component aerodynamic force by superposing the six-component aerodynamic force with the supporting force.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of train simulation measurement, in particular to a method and device for measuring six-component aerodynamic force of a dynamic model of a high-speed train. Background technique [0002] When the vehicle speed is greater than 300km / h, the aerodynamic resistance of the high-speed train can account for more than 85% of the total resistance. As one of the most important environmental loads of high-speed trains, the six-component aerodynamic (total) force, including translational aerodynamic forces and moments in all directions, is the most important parameter in the aerodynamic design of high-speed trains. Compared with the static model experiment (wind tunnel experiment), the dynamic model experiment of the aerodynamic characteristics of high-speed trains can not only simulate the steady-state process of the relative motion of the train with the air and the ground, but also simulate ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/15G06F2119/06Y02T90/00
Inventor 黄国君杨国伟
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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