Viscoelastic material relaxation modulus testing device
A relaxation modulus and testing device technology, which is applied in the direction of measuring devices, analyzing materials, and using stable tension/pressure to test the strength of materials, etc., can solve the problems of not being suitable for viscoelastic materials, etc., and achieve the effect of convenient use and simple structure
Pending Publication Date: 2022-07-08
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology
At present, some scholars have used numerical calculation methods to analyze the indentation resistance under common working conditions based on the three-element Maxwell model of viscoelastic materials, but the parameters in the three-element Maxwell model used are not suitable for different viscoelastic materials.
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[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of 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.
[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", The orientation or positional relationship indicated by "front" and "rear" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the manner or the original must have The p...
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Abstract
The invention discloses a viscous-elastic material relaxation modulus testing device which comprises a bottom channel steel, and a fixing screw and an L-shaped supporting seat are arranged on the bottom channel steel; the top of the fixing screw is fixedly connected with a fixing end connector, a lever is horizontally arranged on the fixing end connector, and the fixing end connector is hinged to the lever through a fixing end pin. And a ball screw sliding table assembly is fixedly arranged on the L-shaped supporting seat. Compared with the prior art, the device has the advantages of being simple in structure and convenient to use. The high-speed rotation of the stepping motor, the linear motion of the sliding table and the low-speed linear motion of the loading rod in the vertical direction simultaneously drive the spherical pressure head to be pressed into the viscoelastic material to be tested, then the stress response of the material to specific strain loading is measured through the tension and compression sensor, and the eddy current displacement sensor indirectly monitors whether the movement rule of the pressure head meets the experimental requirements or not. Therefore, the relaxation moduli of different viscoelastic materials can be tested and researched, and parameterized characterization of the relaxation moduli of different viscoelastic materials is realized.
Description
technical field [0001] The invention relates to the technical field of material relaxation modulus testing, in particular to a viscoelastic material relaxation modulus testing device. Background technique [0002] Coal resource is one of the most important basic energy sources in my country, and its production and consumption rank first in the world. Coal has always accounted for more than 70% of the output and consumption of primary energy in my country, and it is an important factor to ensure national energy security. In recent years, affected by factors such as the domestic and foreign economic environment and the epidemic, the coal economy has experienced a downward trend to varying degrees. Nevertheless, the coal industry is still one of the pillar industries of my country's finance and economics. my country's development strategy has made a reasonable plan for the medium and long-term goals of coal energy. By 2020, the structural share of coal's energy will be contro...
Claims
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IPC IPC(8): G01N3/08G01N3/06G01N3/02
CPCG01N3/08G01N3/066G01N3/02G01N2203/0003G01N2203/0017G01N2203/0019G01N2203/0617
Inventor 万仑仑李雄林福严
Owner CHINA UNIV OF MINING & TECH (BEIJING)