Method and device for testing vehicle body joint dynamic stiffness, storage medium

A test method and storage medium technology, applied in the automotive field, can solve the problems of high tooling cost, high overall cost, and time-consuming production, so as to reduce the test preparation time and tooling production time, reduce the amount of tooling spare parts, and be universal good sex effect

Inactive Publication Date: 2018-08-10
SAIC-GM-WULING AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) It is necessary to customize tooling for each model and each measuring point. The cost of tooling is high, the production time is long, and the overall cost is high;
[0004] 2) Tooling needs to be installed at each attachment point measurement point, which is time-consuming, labor-intensive and inefficient

Method used

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  • Method and device for testing vehicle body joint dynamic stiffness, storage medium
  • Method and device for testing vehicle body joint dynamic stiffness, storage medium
  • Method and device for testing vehicle body joint dynamic stiffness, storage medium

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Embodiment Construction

[0023] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] The present invention mainly calculates the origin dynamic stiffness of the center of the attachment point by measuring the dynamic stiffness of the origin on both sides of the attachment point of the two car bodies and the mutual communication, and uses mathematical formulas to calculate the origin dynamic stiffness of the center of the attachment point. The test is performed without the use of tooling to reduce the cost; accurate , Quickly test the attachment jog stiffness to improve efficiency.

[0025] Specifically, please refer to figure 2 , figure 2 It is a schematic flowchart of a test method for body attachment inching stiffness proposed by an embodiment of the present invention.

[0026] Such as figure 2 As shown, a method for testing vehicle body attachment jog stiffness proposed in the embodime...

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Abstract

The invention discloses a method and a device for testing a vehicle body joint dynamic stiffness, and a storage medium. The method comprises steps of attaching an acceleration sensor on two sides of avehicle body joint respectively; respectively hammering the two sides of the vehicle body joint, and using the acceleration sensors to collect the data of the hammered points on both sides of the vehicle body joint; according to the collected data, calculating the dynamic stiffness (H11, H22) of two sides of the vehicle body joint and the transfer function (H12, H21) between the two sides of thevehicle body joint respectively; and calculating the dynamic stiffness of the center point of the vehicle body joint by using a calculation formula H33=(H11+H21+H12+H22) / 4. The method and the device introduce a mathematical method to calculate the original point dynamic stiffness equivalently instead of tools, which not only reduces the amount of the tool spare parts for the dynamic stiffness measurement, reduces the cost, and has good versatility; and the test preparation time and the time of tool production are reduced and the testing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method, device and storage medium for testing vehicle body attachment inching stiffness. Background technique [0002] At present, during the dynamic stiffness test, each vehicle model and each measuring point usually customize the test tool separately, such as figure 1 As shown in the sleeve device 2, an acceleration sensor 5 is attached to the center of the suspension attachment point of the vehicle body 1, and a hammer with a force sensor is used to strike the X (4), Y (3), and Z ( 6) In three directions, the origin acceleration sensor is obtained by testing, and converted into a dynamic stiffness curve through two integrals and derivatives. The main limitations of this method are: [0003] 1) It is necessary to customize tooling for each model and each measuring point. The cost of tooling is high, the production time is long, and the overall cost is high; [0004] 2)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M5/00
CPCG01M5/0066
Inventor 余义廖毅曾庆懿鲁媛余云飞
Owner SAIC-GM-WULING AUTOMOBILE CO LTD
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