Device for realizing high strain rate pure shear of high plastic material

A high strain rate, pure shear technology, applied in the direction of using a single impact force to test the strength of materials, measuring devices, analyzing materials, etc., can solve the shear area shearing, the effect of high plastic materials is not good, and it cannot meet the high strain of materials. It can achieve the effect of simple structure, reliable function and reducing bending
CN109839318AInactive Publication Date: 2019-06-04BEIJING FORESTRY UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING FORESTRY UNIVERSITY
Publication Date
2019-06-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the metal material dynamic mechanics experiment technology field and discloses a device for realizing high strain rate pure shear of a high plastic material. The device comprises a first component, a second component and a third component. The second component is installed on a transmission rod of a split Hopkinson Pressure Bar (SHPB) device. The third component and the second component are coaxially connected and are located on an incident bar of the SHPB device. The first component is clamped with the third component through the second component and is in contact with the incident bar. Experimental research of the high strain rate pure shear of the high plastic material can be realized, and a deformation process of a shearing area is shot by a high speed camera.The device is simple and reliable and is easy to implement.
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Description

technical field

[0001] The invention relates to the technical field of dynamic mechanics experiments of metal materials, and more specifically relates to a device for realizing high strain rate pure shearing of high plastic materials. Background technique

[0002] Collision and impact are common mechanical phenomena. Whether in daily life or in the engineering field, from the anti-fall of mobile phones, the design of helmets, to the safety of car collisions, and the landing of spacecraft, they all collide with materials. closely related to impact. The scientific analysis of collision and impact requires the research method of dynamic mechanics, and the dynamic mechanical properties of materials are also an important physical property of materials.

[0003] An important task in the study of material dynamic mechanical properties is to analyze the effect of strain rate on the strain-stress of material deformation through experimental data, and to summarize the material consti...

Claims

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