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Dynamic uniaxial bidirectional asynchronous loading device and method thereof

A single-axis, two-way, loading device technology, applied to measuring devices, instruments, scientific instruments, etc., can solve problems such as the inability to realize the dynamic Bauschinger effect

Active Publication Date: 2020-07-10
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a dynamic uniaxial bidirectional non-synchronous loading device and its method to solve the existing technology can not achieve high strain rate The problem with the dynamic Bauschinger effect

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  • Dynamic uniaxial bidirectional asynchronous loading device and method thereof
  • Dynamic uniaxial bidirectional asynchronous loading device and method thereof
  • Dynamic uniaxial bidirectional asynchronous loading device and method thereof

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Embodiment Construction

[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0018] The technical solutions provided by various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] figure 1 It is a structural schematic diagram of a dynamic uniaxial bidirectional non-synchronous loading device according to an embodiment of the present invention, and the device can be...

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Abstract

The invention discloses a dynamic uniaxial bidirectional asynchronous loading device and a method thereof. The device comprises a first loading gun, a first waveguide rod, a second waveguide rod and asecond loading gun which are coaxially arranged in sequence. The first loading gun is used for emitting a compressive stress wave; the second loading gun is used for emitting a tensile stress wave; the first waveguide rod is connected with the first loading gun, the second waveguide rod is connected with the second loading gun, and a sample is arranged between the first waveguide rod and the second waveguide rod; the length of the first waveguide rod is greater than that of the second waveguide rod; the first loading gun and the second loading gun generate stress waves at the same time, the compression stress waves generated by the first loading gun are conducted to the sample along the first waveguide rod and conduct compression loading on the sample, and the tensile stress waves generated by the second loading gun are conducted to the sample along the second waveguide rod and conduct tensile loading on the sample. According to the invention, the Bauschinger effect of the material under dynamic loading can be obtained.

Description

technical field [0001] The invention relates to a dynamic mechanical performance testing technology of materials, in particular to a dynamic single-axis bidirectional non-synchronous loading device and a method thereof. Background technique [0002] The metal material undergoes preloading to produce a small amount of plastic deformation, and then if it is loaded in the opposite direction, its yield limit will decrease; if it is loaded in the same direction, its yield limit will increase. This phenomenon is called the Bauschinger effect. For a long time, the Bauschinger effect has been a basic characteristic of metal materials, but due to the limitations of experimental conditions and other factors, scholars have limited their research on the Bauschinger effect of metal materials to the case of low strain rate, while for high strain The existing research on the dynamic Bauschinger effect under the rate is still less. [0003] At present, the split Hopkinson pressure rod tech...

Claims

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Application Information

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IPC IPC(8): G01N3/317G01N3/02
CPCG01N3/317G01N3/02G01N2203/001G01N2203/005
Inventor 李玉龙杜冰郭亚洲
Owner NORTHWESTERN POLYTECHNICAL UNIV
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