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

Equivalence coefficient method of vehicle structure fatigue damage calculation under combined road conditions

A technology of fatigue damage and combined road conditions, applied in computing, electrical digital data processing, special data processing applications, etc., can solve problems such as single purpose of use, and achieve the effect of simple process, accurate comparison, and saving test costs.

Inactive Publication Date: 2014-07-02
HUAIYIN INSTITUTE OF TECHNOLOGY
View PDF2 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The load test data under combined road conditions has not been used in depth to study the potential impact of load spectrum on vehicle structure damage, and the purpose of use is single. In order to facilitate the comparison and analysis of the influence of different road conditions on vehicle structure damage and fatigue life, it is necessary to guide enterprises to conduct test data. The full and effective utilization of the product reduces the test cost in the product development process. The present invention proposes an equivalent coefficient method for calculating the fatigue damage of the vehicle structure under combined road conditions.

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
  • Equivalence coefficient method of vehicle structure fatigue damage calculation under combined road conditions
  • Equivalence coefficient method of vehicle structure fatigue damage calculation under combined road conditions
  • Equivalence coefficient method of vehicle structure fatigue damage calculation under combined road conditions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: Press figure 1 The process is illustrated by taking the fatigue damage analysis of the control arm of a certain vehicle model under the enhanced combined road conditions of the proving ground as an example.

[0037] The first step: the strain load test and compilation of the load spectrum of the vehicle control arm under the combination of enhanced road conditions at the proving ground.

[0038] (1) Determine the combination of road conditions, and select the reinforced road surface of the highway test site of the Ministry of Communications (8 kinds of road conditions in total), as shown in Table 1;

[0039] Table 1 Proving ground load test scheme

[0040]

[0041] (2) Structural load test, finite element analysis to determine the dangerous point of vehicle control arm structure damage, such as figure 2 As shown, the load test is carried out, and the position of the load test patch of the control arm structure is as follows image 3 shown;

[0042] (3...

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 discloses an equivalence coefficient method of vehicle structure fatigue damage calculation under combined road conditions. The method includes the steps of firstly, testing the stress load of a vehicle structure under selected combined road conditions and compiling a load spectrum; secondly, calculating vehicle damage value under each road condition; thirdly, according to the damage equivalence principle, using one road condition as reference to calculate the equivalence coefficients of vehicle structure damage under other road conditions; fourthly, using the equivalence coefficients to adjust the combined road conditions according to users' needs, and analyzing corresponding vehicle structure damage. The method has the advantages that the method is based on established fatigue load test data, and the equivalence relation of fatigue damage of each road surface can be conveniently and accurately determined during automobile fatigue durability research; mileage recombination can be performed in road tests according to users' application requirements and targets; fatigue damage value of vehicles can be estimated, and comparative analysis of fatigue damage can be performed conveniently.

Description

technical field [0001] The invention relates to the research field of vehicle fatigue durability, in particular to a method for expressing the vehicle structure fatigue damage status under combined road conditions. Background technique [0002] Road surface roughness excitation directly causes vehicle fatigue damage. In order to determine the influence of real road surface excitation on vehicle fatigue durability, vehicle fatigue durability research is usually carried out under various enhanced road surface excitation conditions in the proving ground, and life prediction under the measured load spectrum is carried out. All major vehicle research and development institutions and large automobile companies have attached great importance to it, and have carried out a lot of research work on vehicle fatigue durability, mainly focusing on road simulation experiments under the load spectrum of the proving ground and road strengthening tests on vehicle fatigue durability. In the st...

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 Applications(China)
IPC IPC(8): G06F19/00
Inventor 刘永臣孙丽
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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