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Analytical Calculation Method for Optimum Damping Ratio of Seat Mounts in High Speed ​​Rail Vehicles

A technology for optimal damping ratio and vehicle seats, applied in calculation, instrumentation, electrical digital data processing, etc., can solve problems such as analytical calculation methods without a given system, dynamic analysis and calculation difficulties, and unsatisfactory problems

Inactive Publication Date: 2018-09-28
SHANDONG UNIV OF TECH
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  • Application Information

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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 analyze and calculate its dynamics. At present, there has been no systematic analysis of the design of the optimal damping ratio of the seat suspension at home and abroad. Most of the calculation methods are based on computer technology, using multi-body dynamics simulation software SIMPACK or ADAMS / Rail to optimize and determine its size through solid modeling, although this method can obtain relatively reliable simulation values, so that the vehicle has better performance. Dynamic performance, however, with the continuous increase of the speed of rail vehicles, people put forward higher requirements for the design of the seat suspension damping ratio, the current method of seat suspension damping ratio design can not give a guiding innovation Theory cannot meet the development of shock absorber design requirements under the condition of continuous speed increase of rail vehicles

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  • Analytical Calculation Method for Optimum Damping Ratio of Seat Mounts in High Speed ​​Rail Vehicles
  • Analytical Calculation Method for Optimum Damping Ratio of Seat Mounts in High Speed ​​Rail Vehicles
  • Analytical Calculation Method for Optimum Damping Ratio of Seat Mounts in High Speed ​​Rail Vehicles

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Embodiment Construction

[0060] specific implementation plan

[0061] The present invention will be further described in detail through an embodiment below.

[0062] The unloaded 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, 1 / 4 sum of mass of passengers in a single car m 3 =1593.8kg; The vertical equivalent stiffness K of the primary suspension 1 =2.74×10 6 N / m, vertical equivalent damping C 1 =28.3kN.s / m; the equivalent stiffness K of the end connection of the primary vertical shock absorber d1 =40×10 6 N / m; Vertical stiffness K of the secondary mount 2 =568.4kN / m, vertical damping C 2 =59.4kN.s / m; End connection stiffness K of the secondary vertical shock absorber d2 =20×10 6 N / m; vertical equivalent stiffness of seat suspension K 3 =566.27kN / m; the damping ratio of the seat suspension to be designed is ξ, where the equivalent damping coefficient of the seat suspension shock absorber The optimal da...

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Abstract

The invention relates to an analytic calculation method for the optimal damping ratio of seat suspension of a high-speed rail vehicle, and belongs to the technical field of suspension of high-speed rail vehicles. As a 1 / 4 vehicle body-seat traveling vertical vibration model of the rail vehicle is set up, an objective function of the optimal damping ratio of seat suspension is set up by means of the random vibration theory and analytically calculated to obtain the optimal damping ratio of seat suspension. It can be known through design examples and SIMPACK simulation verification that the optimal damping ratio of seat suspension can be obtained accurately and reliably through the method, and a reliable design method is provided for designing the optimal damping ratio of seat suspension of the high-speed rail vehicle. By means of the method, the design level and product quality of a high-speed rail vehicle suspension system can be improved, riding comfort of the vehicle is improved, product design and test cost can be reduced, the product design cycle is shortened, and the international market competitiveness of the rail vehicles in China is enhanced.

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 high-speed rail vehicle seat mount. Background technique [0002] The damping ratio of the seat suspension system has an important influence on the ride comfort of high-speed rail vehicles, and its design or selection is an important parameter based on the design of the seat suspension system shock absorber valve system parameters. However, according to the available information, since the rail vehicle is a multi-degree-of-freedom vibration system, it is very difficult to analyze and calculate its dynamics. At present, there has been no systematic analysis of the design of the optimal damping ratio of the seat suspension at home and abroad. Most of the calculation methods are based on computer technology, using multi-body dynamics simulation software SIMPACK or ADAMS / Rail to optimize and determine its size throu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 周长城于曰伟赵雷雷
Owner SHANDONG UNIV OF TECH
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