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Differential fatigue durability rack spectrum compilation method and system, terminal and storage medium

A technology of durable platform and differential, which is applied in the direction of instruments, special data processing applications, electrical digital data processing, etc. It can solve the problems of unfavorable light weight, failure to achieve the purpose of pre-verification, and excessive load spectrum, etc., to achieve road coverage The effects of comprehensive types and accurate load input strength

Pending Publication Date: 2022-03-22
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fatigue durability performance can be verified by bench test and vehicle test, wherein the bench test is carried out before the vehicle verification, and after the bench test is passed, the vehicle test is carried out again. The accuracy of the bench verification depends on the loading Load spectrum, if the load spectrum is too small, the purpose of the preliminary verification cannot be achieved; if the load spectrum is too large, it will cause over-design, which is not conducive to lightweight

Method used

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  • Differential fatigue durability rack spectrum compilation method and system, terminal and storage medium
  • Differential fatigue durability rack spectrum compilation method and system, terminal and storage medium
  • Differential fatigue durability rack spectrum compilation method and system, terminal and storage medium

Examples

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Effect test

Embodiment 1

[0059] figure 1 It is a flow chart of a method for formulating a differential fatigue endurance bench spectrum according to an exemplary embodiment. The method is used in a terminal, and the method includes the following steps:

[0060] Step 101, acquiring drive shaft torque data and rotational speed data respectively;

[0061] Step 102, obtain the corresponding relationship between the torque in different intervals and the number of rotations through the torque data and rotational speed data of the drive shaft;

[0062] Step 103: Calculate the damage value of the same torque in different test routes through the corresponding relationship between the torque in different intervals and the number of rotations by using the theory of fatigue cumulative damage;

[0063] Step 104, obtain the road driving ratio of different users, and obtain the pseudo damage value of 99% users equivalent to 240,000 kilometers through the road driving ratio of different users and the damage value of...

Embodiment 2

[0082] figure 2 It is a flow chart of a method for formulating a differential fatigue endurance bench spectrum according to an exemplary embodiment. The method is used in a terminal, and the method includes the following steps:

[0083] Step 201, building a test system, and performing a public road simulation user test on the built test system;

[0084] According to the direct size and installation position of the slip ring torque sensor installation hole, the diameter of the drive shaft near the wheel end is reduced to form a clearance fit with the slip ring torque sensor installation hole, and the middle gap is fixed with two-in-one adhesive to make the slip ring torque sensor The rotor is integral with the drive shaft and rotates together.

[0085] Install the strain gauge on the unmodified part of the drive shaft. Choose a full-bridge strain gauge for the strain gauge. Polish the surface of the installation position to make it smooth. Use special CN glue to stick the str...

Embodiment 3

[0132] In an exemplary embodiment, there is also provided a differential fatigue durability bench spectrum compilation system, such as Image 6 shown, including:

[0133] An acquisition module 310, configured to acquire drive shaft torque data and rotational speed data respectively;

[0134] The calculation module 320 is used to obtain the corresponding relationship between torque and the number of rotations in different intervals through the drive shaft torque data and rotational speed data;

[0135] The statistical module 330 is used to calculate the damage value of the same torque in different test routes by using the fatigue cumulative damage theory through the corresponding relationship between the torque in different intervals and the number of rotations;

[0136] The calculation module 340 is used to obtain the road driving ratio of different users, and obtain the pseudo damage value of 99% users equivalent to 240,000 kilometers through the road driving ratio of differ...

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Abstract

The invention discloses a differential fatigue durability rack spectrum compilation method and system, a terminal and a storage medium, and belongs to the technical field of engineering vehicles. According to the torque data and the rotating speed data of the driving shaft, the corresponding relation between torques and the number of rotating turns in different intervals is obtained; calculating damage values of the same torque of different test routes by adopting a fatigue cumulative damage theory according to the corresponding relation between the torque and the number of rotation turns of different intervals; obtaining road surface driving proportions of different users, and obtaining 99% of user pseudo damage values equivalent to 240000 kilometers according to the road surface driving proportions of the different users and the damage values of the same torque of different test routes; and obtaining the fatigue durability rack spectrum of the differential mechanism by adopting a damage equivalence principle according to 99% user pseudo damage values equivalent to 240000 kilometers. The method comes from a real road used by a user, road types are covered comprehensively, the load input strength is more accurate, and the situation that design is too strong or a failure mode is changed due to the fact that the load is far higher than the actual load of the user in simulation or bench verification is avoided.

Description

technical field [0001] The invention discloses a method, a system, a terminal and a storage medium for compiling a differential gear fatigue durability bench spectrum, and belongs to the technical field of engineering vehicles. Background technique [0002] A car differential is a mechanism that enables the left and right drive wheels to rotate at different speeds. It is mainly composed of left and right side shaft gears, two planetary gears and a gear carrier. The function is to make the left and right wheels roll at different speeds when the car is turning or driving on an uneven road, that is, to ensure the pure rolling motion of the driving wheels on both sides. The fatigue durability performance can be verified by bench test and vehicle test, wherein the bench test is carried out before the vehicle verification, and after the bench test is passed, the vehicle test is carried out again. The accuracy of the bench verification depends on the loading The load spectrum, if...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/17G06F30/20G06F119/02
CPCG06F30/15G06F30/17G06F30/20G06F2119/02
Inventor 薄昊张元勤申春宝刘占国董立甲李响
Owner CHINA FIRST AUTOMOBILE
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