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A kind of viscoelastic material confining pressure loading test system and method

A technology of loading test and viscoelasticity, which is applied in the direction of analyzing materials, using stable tension/pressure to test the strength and strength characteristics of materials, etc., which can solve the problems of inability to simulate the differences in the loading state of grains and solid propellants, and achieve simple structure , Wide range of working conditions, easy to produce effects

Active Publication Date: 2020-05-22
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

None of these can simulate the high-pressure gas environment in which the grain is located, resulting in a large difference between the solid propellant load state in the mechanical test and the actual load state of the grain

Method used

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  • A kind of viscoelastic material confining pressure loading test system and method
  • A kind of viscoelastic material confining pressure loading test system and method

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, an embodiment of the viscoelastic material confining pressure loading test system of the present invention includes a confining pressure cover 1, a confining pressure loading device 2 and a uniaxial loading device 3 for loading a viscoelastic test piece 4, the confining pressure cover 1 A confining pressure chamber 11 is provided inside, and the uniaxial loading device 3 is installed in the confining pressure chamber 11 , and the confining pressure loading device 2 is located outside the confining pressure cover 1 and communicated with the confining pressure chamber 11 . In this structure, the confining pressure loading device 2 fills the test space formed by the confining pressure chamber 11 with high-pressure gas, which realistically simulates the environmental pressure of pressure structures such a...

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Abstract

The invention discloses a confining pressure load test system and method of a viscous-elastic material. The system comprises a confining pressure cover, a confining pressure load device and a single-axis load device for loading a viscous-elastic test-piece. The interior of the confining pressure cover is provided with a confining pressure cavity. The single-axis load device is installed in the confining pressure cavity. The confining pressure load device is positioned at the exterior of the confining pressure cover and is communicated with the confining pressure cavity. The method comprises the following steps: S1: inflating for pressurizing; S2: uniaxial-testing; and S3: ending the test. The system has the advantages of simple structure, easy manufacturing, convenient operation, and extensive application range, and is capable of realistically simulating the stress of the environment located by the pressure structure.

Description

technical field [0001] The invention mainly relates to confining pressure test technology, in particular to a viscoelastic material confining pressure loading test system and method. Background technique [0002] Due to the unique physical properties of viscoelastic materials, the environmental pressure in which they are located should be considered when studying the mechanical properties. Solid propellant is a kind of viscoelastic material. Take it as an example to illustrate the necessity and realization method of environmental pressure in experimental research. In the research of weapons and equipment, besides numerical simulation, there are also experimental research methods for the structural integrity of grains. Since the internal pressure of the solid rocket motor increases sharply after ignition, the experimental research on the internal grain of the solid rocket motor should consider the environmental pressure. [0003] Due to the large size and various shapes of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08
CPCG01N3/08G01N2203/0012G01N2203/0019G01N2203/005G01N2203/0232G01N2203/0252
Inventor 申志彬张亮李奕飞职世君宋先村
Owner NAT UNIV OF DEFENSE TECH
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