Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Optimal Design Method for Optimum Damping Ratio of Seat Mounts for High Speed ​​Rail Vehicles

A technology of optimal damping ratio and optimal design, applied in computing, mechanical equipment, special data processing applications, etc., can solve the problems of insufficiency, difficulty in dynamic analysis and calculation, and no theoretical design method of the system is given, so as to improve the The effect of riding comfort, reducing product design and testing costs, and shortening product design cycle

Inactive Publication Date: 2018-06-29
SHANDONG UNIV OF TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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, no systematic theory has been given for the design of the optimal damping ratio of the seat suspension at home and abroad. Most of the design 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 get more reliable simulation values, so that the vehicle has better 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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optimal Design Method for Optimum Damping Ratio of Seat Mounts for High Speed ​​Rail Vehicles
  • Optimal Design Method for Optimum Damping Ratio of Seat Mounts for High Speed ​​Rail Vehicles
  • Optimal Design Method for Optimum Damping Ratio of Seat Mounts for High Speed ​​Rail Vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] specific implementation plan

[0025] The present invention will be further described in detail through an embodiment below.

[0026] 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 vehicle sp...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an optimal design method for the optimal damping ratio of a high-speed rail vehicle seat mount, and belongs to the technical field of high-speed rail vehicle mounts. The present invention establishes the vertical vibration differential equation of the seat suspension system, utilizes MATLAB / Simulink simulation software, builds the vertical vibration optimization design simulation model of the seat suspension system, and takes the track height irregular random input as input excitation , with the minimum root mean square value of the vibration acceleration of the vertical motion of the seat as the design goal, the optimum damping ratio of the seat suspension system is obtained through optimization design. Through the design example and SIMPACK simulation verification, it can be seen that the method can obtain the accurate and reliable optimal damping ratio of the seat suspension system, and provides a reliable design method for the design of the damping ratio of the seat suspension of high-speed rail vehicles. Using this method can not only improve the design level of the suspension system of high-speed rail vehicles, but also improve the ride comfort of the vehicles; at the same time, it can also reduce product design and test costs, and enhance the international market competitiveness of my country's rail vehicles.

Description

technical field [0001] The invention relates to a high-speed rail vehicle mount, in particular to an optimal design 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, no systematic theory has been given for the design of the optimal damping ratio of the seat suspension at home and abroad. Most of the design methods are based on computer technology, using multi-body dynamics simulation software SIMPACK or ADAMS / Rail, to optimize and determine its size through solid mode...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCY02T10/40
Inventor 周长城于曰伟
Owner SHANDONG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com