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

An optimal damping ratio, high-speed track technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as analytical calculation methods for which no system is given, and difficulties in dynamic analysis and calculation.

Inactive Publication Date: 2015-12-16
SHANDONG UNIV OF TECH
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Problems solved by technology

However, according to the available information, since the rail vehicle is a multi-degree-of-freedom vibration system, it is very difficult to perform dynamic analysis and calculation on it. At present, there is no system for the design of the damping ratio of the secondary lateral mount of the high-speed rail vehicle at home and abroad. Most of the analytical calculation methods are to select a certain damping ratio based on experience (usually the empirical damping ratio is 0.2-0.4), and then, with the help of computer technology, use the multi-body dynamics simulation software SIMPACK or ADAMS/Rail to optimiz

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

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[0062] specific implementation plan

[0063] The present invention will be further described in detail through an embodiment below.

[0064] Two transverse shock absorbers are installed on each bogie of a high-speed rail vehicle, that is, n=2; the full-load mass of its 1 / 2 single-section car body m 3 =31983kg, the mass of a single bogie frame m 2 =2758kg, the equivalent mass of the wheel set m 1 =3442kg, each axle weight W=150000N; the equivalent stiffness K of the lateral positioning spring of a series of wheelset 1y =9784000N / m, the equivalent stiffness K of the central spring 2y =180000N / m; half of the lateral distance between the wheel and rail contact point b=0.7465m, the equivalent slope of the wheel tread λ=0.15, the lateral creep coefficient of the wheel f 1 =16990000N; the damping ratio of the secondary transverse mount to be designed is ξ, where the equivalent damping coefficient of the secondary transverse shock absorber The vehicle speed v=300km / h required fo...

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Abstract

The invention relates to an analytic calculation method of an optimal damping ratio of the two-line horizontal suspension of a high-speed railway vehicle, and belongs to the technical field of the high-speed railway vehicle suspension. A 1/2 vehicle body traveling yawing vibration model is established, the optimal human body riding comfort and minimum horizontal 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 horizontal 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 horizontal 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 horizontal suspension system, and provides a reliable design method for the design of the damping ratio of the two-line horizontal 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, simultaneously 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 optimum damping ratio of the secondary lateral mount of the high-speed rail vehicle. Background technique [0002] The damping ratio of the secondary lateral suspension system has an important influence on the ride comfort and safety of high-speed rail vehicles, and its design or selection is an important parameter for designing the shock absorber valve system parameters of the secondary lateral suspension system. However, according to the available information, since the rail vehicle is a multi-degree-of-freedom vibration system, it is very difficult to perform dynamic analysis and calculation on it. At present, there is no system for the design of the damping ratio of the secondary lateral mount of the high-speed rail vehicle at home and abroad. Most of the analytical calculation methods are to select a certain damping ratio based on ex...

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Application Information

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IPC IPC(8): G06F19/00G06F17/50
Inventor 周长城于曰伟赵雷雷
Owner SHANDONG UNIV OF TECH
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