DIC-based hydraulic pipeline joint lateral force test method

A hydraulic pipeline and testing method technology, applied in the field of hydraulic pipeline, can solve the problems of strain gauge error, small measurable range, large error, etc.

Inactive Publication Date: 2021-04-16
HARBIN INST OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] When using theoretical analysis or finite element simulation for hydraulic pipeline vibration analysis, the model often needs to put forward some basic assumptions and make certain simplifications, sometimes it cannot represent the actual engineering situation
At present, the stress test method for hydraulic pipelines is

Method used

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  • DIC-based hydraulic pipeline joint lateral force test method
  • DIC-based hydraulic pipeline joint lateral force test method
  • DIC-based hydraulic pipeline joint lateral force test method

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Embodiment Construction

[0031] A kind of DIC-based hydraulic pipeline joint lateral force test method of the present invention comprises the following steps:

[0032] Step 1. Use the DIC binocular recognition vibration measurement system to measure the displacement of the hydraulic pipeline joint;

[0033] According to the geometric characteristics of the pipeline, calculate the size of the speckle and make the speckle;

[0034] Install the imaging equipment and then perform calibration;

[0035] Start the DIC system shooting software to record data.

[0036] Use the software in the DIC system to analyze the data and obtain the vibration information of the experimental object.

[0037] When installing imaging equipment, install the tripod, pan / tilt, camera, lens in sequence, connect the lines, install the light source, adjust the camera position and parameters to make the camera image clear.

[0038] Select the calibration board and perform calibration. After the calibration is completed, the came...

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Abstract

The invention relates to a DIC-based hydraulic pipeline joint lateral force test method. The method comprises the following steps of 1, measuring hydraulic pipeline joint displacement by adopting a DIC binocular identification vibration measurement system; and 2, according to the displacement data obtained through testing, adopting Abaqus finite element simulation software to calculate the lateral force of the hydraulic pipeline joint. The DIC binocular recognition vibration measurement system is adopted, the displacement of the designated position of the pipeline is directly detected, the detectable range is wide, and the vibration condition of the pipeline in a long time period can be obtained. Then vibration displacement and relative displacement of the hydraulic pipeline are obtained through data analysis, and in combination with finite element simulation, the lateral force of the designated pipeline position is calculated.

Description

technical field [0001] The invention belongs to the field of hydraulic pipelines, and in particular relates to a DIC-based testing method for lateral force of hydraulic pipeline joints. Background technique [0002] In recent years, with the development of hydraulic systems towards high pressure and high power, the vibration problem of hydraulic pipelines has gradually become prominent, and the lateral force of pipeline joints caused by vibration is often an important reason for the failure of pipeline joints. At present, the calculation of the lateral force of the pipeline joint is mainly through theoretical analysis and finite element simulation, and the models need to be simplified, and the calculation results often cannot be well matched with the actual engineering problems. [0003] Due to the high power and high pressure of modern hydraulic pipelines, during the working process, the pipelines often vibrate violently and generate large lateral forces, causing damage to ...

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Application Information

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IPC IPC(8): G01L11/02G01H9/00G06F30/23
Inventor 侯磊陈毅昌泽元梁廷伟徐浚之靳宇宏
Owner HARBIN INST OF TECH
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