A unidirectional compression-shear integrated dynamic stress-strain testing device
A dynamic stress and strain testing technology, applied in the field of experimental equipment, can solve problems such as difficult to reflect the dynamic response of materials, difficult to reflect material damage, etc.
Inactive Publication Date: 2016-08-17
ANHUI UNIV OF SCI & TECH
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Problems solved by technology
The traditional Hopkinson compression bar cannot complete the simultaneous test of the compression-shear dynamic properties of the test material, and the dynamic compression characteristics or dynamic shear characteristics of the material must be tested separately, which is not only difficult to reflect the dynamic response of the material under the compression-shear composite stress loading , it is also difficult to reflect the real situation of material damage
Method used
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Embodiment Construction
[0014] Below in conjunction with accompanying drawing, by describing embodiment, the present invention will be further described:
[0015] like figure 1 As shown, a kind of unidirectional compression-shear integrated dynamic stress-strain testing device of the present invention comprises a bullet launching device, and the bullet launching device comprises a high-pressure gas cylinder 1, and the two ends of the high-pressure gas cylinder 1 are respectively equipped with an air inlet valve 2 and an air outlet valve 3, The air outlet valve 3 is connected with the barrel 4, the barrel 4 is provided with a bullet 5, and the outlet end of the barrel 4 is provided with a pressure-shearing injection rod 6, and the pressure-shearing injection rod 6 does not contact the gun barrel 4, and the pressure-shearing injection rod 6 The end of the compression-shear transmission rod 7 is provided, and the compression-shear transmission rod 6 and the compression-shear transmission rod 7 are flexi...
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The invention discloses a one-way pressure-shear integrated dynamic stress-strain testing device, which comprises a bullet launching device, the bullet launching device includes a high-pressure gas cylinder, the high-pressure gas cylinder is provided with an air outlet valve, the air outlet valve is connected with a barrel, and the outlet end of the barrel is There is a compression-shear injection rod, and the end of the compression-shear injection rod is provided with a compression-shear transmission rod. The compression-shear injection rod and the compression-shear transmission rod are flexibly connected by an annular sleeve. The two pressure shear heads are located in the annular sleeve, and the outer surfaces of the two pressure shear heads are set as slopes, and the slopes of the two pressure shear heads are parallel to each other, and the slopes of the two pressure shear heads are placed For the test material, when the bullet is shot from the barrel and hits the compression shearing rod to form a compression wave, the compression wave is transmitted to the slope of the compression shear head and acts on the test material, so that the compression shear head can not only impact the test material, but also Capable of clip loading.
Description
technical field [0001] The present invention relates to an experimental equipment, in particular to a dynamic stress-strain testing device integrated with one-way compression and shearing. Background technique [0002] In many cases, such as explosions, projectile penetration, etc., the material is subjected to loads that are impact loaded. The failure mode of materials under complex stress states is often different from the behavior characteristics of ideal loading conditions, and shear failure often plays a leading role in material failure, so the response of materials under compression-shear composite loading is very high. academic value. The stress-strain relationship of materials under impact loading is an important performance parameter of materials, and dynamic impact loading testing is a key technology. The traditional Hopkinson compression bar cannot complete the simultaneous test of the compression-shear dynamic properties of the test material, and the dynamic co...
Claims
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IPC IPC(8): G01N3/307G01N3/24
Inventor 穆朝民石必明伍清齐娟张文清胡祖祥高光发程建圣
Owner ANHUI UNIV OF SCI & TECH