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Hydraulic bulging test method and system for performance of HDPE (High-Density Polyethylene) material

A technology of hydraulic bulging and material properties, applied in the direction of applying stable tension/pressure to test material strength, sustainable transportation, etc., can solve problems such as no explanation, insufficient finite element simulation research, etc., to improve accuracy and uncertain parameters less, to overcome the effect of imprecise

Pending Publication Date: 2022-07-08
CHINA SPECIAL EQUIP INSPECTION & RES INST +1
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Problems solved by technology

[0007] The purpose of the present invention is to provide a hydraulic bulge test method and system for HDPE material properties, to solve the problem of insufficient finite element simulation research of the existing hydraulic bulge experimental process, and the problem that the phenomenon of the experimental process cannot be explained from the perspective of numerical analysis

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  • Hydraulic bulging test method and system for performance of HDPE (High-Density Polyethylene) material
  • Hydraulic bulging test method and system for performance of HDPE (High-Density Polyethylene) material
  • Hydraulic bulging test method and system for performance of HDPE (High-Density Polyethylene) material

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Embodiment Construction

[0080] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0081] The purpose of the present invention is to carry out uniaxial tensile experiments and hydraulic bulging experiments on HDPE, and to carry out finite element modeling and numerical simulation of the experimental process. By reasonably selecting the description method of the constitutive relationship and failure mode of HDPE material, the mechanical response of the specimen during the experiment is analyzed, and the physical char...

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Abstract

The invention discloses an HDPE material performance hydraulic bulging test method and system, and the method comprises the steps: testing the material performance of a test piece through a uniaxial tensile test and a hydraulic bulging test, and obtaining tensile test data and bulging test data; respectively carrying out finite element simulation according to the tensile experiment data and the ballooning experiment data to obtain simulated tensile data and simulated ballooning data; and comparing the simulated tensile data with the tensile experiment data, and comparing the simulated ballooning data with the ballooning experiment data to obtain a mechanical response relationship of the test piece. According to the method, the contrast of a finite element method is provided for the hydraulic bulging experiment, so that the hydraulic bulging experiment can explain the phenomenon in the experiment process from the perspective of numerical analysis, and the accuracy of mechanical property analysis of the HDPE material is further improved.

Description

technical field [0001] The invention relates to the technical field of bulging experiment testing, in particular to a method and system for hydraulic bulging testing of HDPE material properties. Background technique [0002] High molecular polyethylene (HDPE) materials are widely used in the transportation of drinking water for residents, the discharge of domestic water, the underground transportation of municipal water, the transportation of natural gas, telecommunication, some heating pipelines, solid-liquid medium transmission in medical systems, etc. aspect. [0003] Compared with traditional metal materials, HDPE materials have many advantages and become the best choice for urban pipe networks. However, at present, the development and application level of HDPE pipes in my country is generally low, and there is still a certain gap compared with the advanced level in foreign countries. In order to make HDPE pipes truly used in large areas in my country, how to correctly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12
CPCG01N3/12Y02T90/00G01N2203/0218G01N2203/0298G01N2203/0282G01N2203/0075G01N2203/0017G01N3/08G01N3/28G01N2203/0048G01N33/442
Inventor 金栋常亮徐光明赵博荣妍封士淳张树燕武龙河戚晓平
Owner CHINA SPECIAL EQUIP INSPECTION & RES INST
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