Hopkinson tension and compression integrated experimental device

An experimental device and experimental technology, which is applied in the field of material mechanical performance experiments, can solve problems such as difficult to meet conditions, cumbersome processing and experimental processes, inconsistent rod cross-sections, etc., and achieve the effects of improved efficiency, convenient replacement, and simplified experimental processes

Inactive Publication Date: 2014-02-05
NANJING UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

Due to the inconsistency of the rod section, The effect of the hole in the transmission rod and the friction between the specimen and the rod make it difficult to satisfy the above conditions
The literature "Nicholas.T: Tensile testing of materials at high rates of strain. Exp. Mech, 21:177–185(1980)" has greatly improved the one-dimensi

Method used

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  • Hopkinson tension and compression integrated experimental device
  • Hopkinson tension and compression integrated experimental device
  • Hopkinson tension and compression integrated experimental device

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Embodiment Construction

[0017] Combine Figure 1 ~ Figure 5 :

[0018] The invention discloses a Hopkinson tension-compression integrated experimental device. A fixed rail 2, a barrel support 11 and a compression experiment launching device 12 are provided on a water platform 1. The barrel support 11 supports the barrel of the compression experiment launching device 12. The fixed guide rail 2 is provided with a matching sliding block 4, and the matching sliding block 4 is respectively installed with a kinetic energy absorber 3 and a fine adjustment support device 5 from left to right. The fine adjustment support device supports the wave absorption rod 6 and double-end threaded holes from left to right The experimental rod 8 and the single-end threaded hole rod 10, the tensile experiment launching device 9 is set on the fixed guide 2, the double-end threaded hole experimental rod 8 passes through the tensile experiment launching device 9, the flange wave converter 7 is a cylinder Boss structure, threads...

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Abstract

The invention discloses a Hopkinson tension and compression integrated experimental device. Air filling devices, air cylinders, shooting cannons, shooting cannon control systems and bullets, which are used for tension and compression tests, are two sets of systems independent of each other; a fixed guide rail, an adjustable supporting device, a data acquisition system, an incidence rod, a transmission rod and an absorption device are shared systems; the tension and compression tests can be performed respectively, and the cost can be greatly reduced; by virtue of boss threads, a test piece can be conveniently replaced, an experimental process is further simplified, and the efficiency of a single experiment with large experiment amount is remarkably improved.

Description

Technical field [0001] The invention belongs to the experimental field of material mechanical properties, in particular to a Hopkinson tension-compression integrated experimental device. Background technique [0002] In the process of material mechanics research, we often find that its compression and tensile properties are asymmetrical, and the mechanical properties exhibited by compression cannot be simply applied to the tensile environment. In this way, it is necessary to build experimental devices that can study the tensile properties of materials. At present, independent experimental devices are Hopkinson pressure bar and Hopkinson draw bar. If two experimental devices are built at the same time, the cost is very high and takes up space and resources. Therefore, we considered integrating the two experimental devices into one experimental device, which not only saves costs, but also saves laboratory space resources. [0003] The tension-compression integrated Hopkinson bar de...

Claims

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Application Information

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IPC IPC(8): G01N3/307
Inventor 赵超郑健鞠玉涛陈雄周长省许进升汪文强
Owner NANJING UNIV OF SCI & TECH
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