Initiative confining pressure test system suitable for explosives and solid propellant materials

A solid propellant and test system technology, which is used in the test of ammunition, the use of stable tension/pressure to test the strength of materials, and the analysis of materials, etc. problem, to achieve the effect of simultaneous measurement

Inactive Publication Date: 2019-12-06
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology

On the one hand, this method cannot accurately obtain the size of the confining pressure. On the other hand, the confining pressure has been increasing continuously during the loading process, and it is difficult to artificially control the size of the confining pressure. Therefore, it is urgent to develop an active confining pressure for explosives and solid propellants Tensile compression test method

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  • Initiative confining pressure test system suitable for explosives and solid propellant materials

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Embodiment 1

[0010] Such as figure 1 As shown, the present invention provides an active confining pressure test system suitable for explosives and solid propellant materials, the system consists of a load loading system, a deformation measurement system, a temperature control system and a human interaction system, and the load loading system includes a surrounding Pressure loading system and axial loading system. The confining pressure loading system can realize the loading function of the sample confining pressure by hydraulically loading the confining pressure chamber filled with hydraulic oil. The axial loading system can realize the test by replacing the special fixture. The tensile and compressive loading functions of the sample axial direction, the deformation measurement system can realize the synchronous measurement function of the axial and radial deformation of the sample through special tooling, and the temperature control system, by heating the hydraulic oil in the confining pre...

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Abstract

The invention discloses an initiative confining pressure test system suitable for explosives and solid propellant materials. The system consists of a load loading system, a deformation measurement system, a temperature control system and an interpersonal interaction system, wherein the load loading system comprises a confining pressure loading system and an axial loading system; the deformation measurement system is capable of realizing a synchronous measurement function for the axial and radial deformation of samples through a special tooling; the temperature control system is capable of realizing accurate warming and heat preservation control under different temperatures from environmental temperature to high temperature through heating the hydraulic oil in a confining pressure chamber and carrying out control by adoption of a PID; and the interpersonal interaction system is mainly used for displaying and recording the confining pressure, axial load, temperature and deformation testdata and sending instructions to the load loading system and the temperature control system. The system is capable of obtaining the stress-strain relation curves and strength fracture data of the explosives and solid propellant materials under different temperatures and different confining pressure environments and the long-time creep data under complicated stress.

Description

technical field [0001] The invention relates to the field of testing the mechanical properties of explosives and solid propellant materials, in particular to an active confining pressure test system suitable for explosives and solid propellant materials. Background technique [0002] In order to accurately establish the constitutive model and strength criterion of explosives and solid propellant materials, and evaluate the mechanical properties of explosives and solid propellants with high precision, the tensile and compressive mechanical properties of explosives and solid propellant materials under confining pressure have been tested to important. At present, the mechanical tests of explosives and solid propellants under confining pressure are still limited to passive confining pressure samples, that is, a metal sleeve is placed on the surface of the sample to perform uniaxial compression tests, and the size of the confining pressure is determined by the metal sleeve. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/18F42B35/00
CPCF42B35/00G01N3/18G01N2203/0017G01N2203/0019G01N2203/0048G01N2203/0075G01N2203/0226
Inventor 唐维袁洪魏董天宝颜熹琳赵龙
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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