Analytic calculation method of optimal damping ratio of two-line vertical suspension of high-speed railway vehicle

An optimal damping ratio, secondary vertical technology, applied in the direction of calculation, complex mathematical operations, special data processing applications, etc., can solve problems such as dynamic analysis and calculation difficulties, and no systematic analytical calculation method given

Inactive Publication Date: 2015-12-16
SHANDONG UNIV OF TECH
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  • Application Information

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Problems solved by technology

However, according to the information obtained, it is very difficult to analyze and calculate the dynamics of the rail vehicle because it is a multi-degree-of-freedom vibration system. At present, the design of the damping ratio of the secondary vertical suspension of the high-speed rail vehicle has not been given at home and abroad. The analytical calculation method of the system mostly selects a certain damping ratio according to experience (usually the empirical damping ratio is 0.2-0.45), and then, with the help of computer technology, the multi-body dynamics simulation software SIMPACK or ADAMS/Rail is used to carry out solid modelin

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  • Analytic calculation method of optimal damping ratio of two-line vertical suspension of high-speed railway vehicle
  • Analytic calculation method of optimal damping ratio of two-line vertical suspension of high-speed railway vehicle
  • Analytic calculation method of optimal damping ratio of two-line vertical suspension of high-speed railway vehicle

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Embodiment Construction

[0069] specific implementation plan

[0070] The present invention will be further described in detail through an embodiment below.

[0071] The full-load mass of a 1 / 4 single-section car body of a high-speed rail vehicle m 2 =14398kg, half of the mass of a single bogie frame m 1 =1379kg, the equivalent stiffness K of the primary vertical suspension 1 =2.74×10 6 N / m, equivalent damping C 1 =28.3kN.s / m; the stiffness K of the secondary vertical suspension 2 =5.68×10 5 N / m; the equivalent stiffness of the end connection of the primary vertical shock absorber K d1 =40×10 6 N / m, equivalent stiffness K of the end connection of the secondary vertical shock absorber d2 =20×10 6 N / m; the damping ratio of the secondary vertical suspension to be designed is ξ, where the damping coefficient of the secondary vertical shock absorber The optimal damping ratio of the secondary vertical mount of the high-speed rail vehicle is designed.

[0072] The analytical calculation method of...

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Abstract

The invention relates to an analytic calculation method of an optimal damping ratio of the two-line vertical suspension of a high-speed railway vehicle, and belongs to the technical field of the high-speed railway vehicle suspension. A 1/4 vehicle body four-degree-of-freedom driving vertical vibration model is established, the optimal human body riding comfort and minimum vertical force borne on a wheel set and an axle are independently taken as a design target, calculation is carried out to obtain the optimal damping ratio of a two-line vertical suspension system on the basis of comfort and safety, and the calculation is carried out to obtain the optimal damping ratio of the two-line vertical suspension system by a golden section principle. Through a design example and SIMPACK simulation verification, the method can obtain the accurate and reliable optimal damping ratio of the two-line vertical suspension system, and provides a reliable design method for the design of the damping ratio of the two-line vertical suspension of the high-speed railway vehicle. The method can improve the design level of the suspension system of the high-speed railway vehicle, and vehicle riding comfort and safety, can lower design and experiment cost and enhances the international market competitiveness of the railway vehicle in China.

Description

technical field [0001] The invention relates to a high-speed rail vehicle mount, in particular to an analytical calculation method for the optimal damping ratio of a secondary vertical mount of a high-speed rail vehicle. Background technique [0002] The damping ratio of the secondary vertical suspension system has an important impact on the ride comfort and safety of high-speed rail vehicles, and its design or selection is an important parameter for the design of the shock absorber valve system parameters of the secondary vertical suspension system. . However, according to the information obtained, it is very difficult to analyze and calculate the dynamics of the rail vehicle because it is a multi-degree-of-freedom vibration system. At present, the design of the damping ratio of the secondary vertical suspension of the high-speed rail vehicle has not been given at home and abroad. The analytical calculation method of the system mostly selects a certain damping ratio accord...

Claims

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Application Information

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IPC IPC(8): G06F19/00G06F17/15
Inventor 周长城于曰伟赵雷雷
Owner SHANDONG UNIV OF TECH
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