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Reluctance-type tension-compression double-layer minisize Hopkinson bar system

A Hopkinson rod, magnetoresistive technology, applied in the field of dynamic shock, can solve the problems of uncontrollable strain rate and stress wave width, incompatibility with bullets, etc., to achieve increased discharge current peak value, compact device, and improved energy conversion rate Effect

Inactive Publication Date: 2018-08-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In view of this, the present invention provides a magnetoresistive tension-compression double-layer miniature Hopkinson rod system, which solves the problem that the electromagnetically driven miniature Hopkinson rod system in the prior art cannot control its strain rate and stress wave width. The problem is that the optimized current discharge waveform avoids the influence of eddy current deceleration force, and obtains better acceleration effect while reducing the volume of the device. It is not compatible with the technical problems of bullets of different lengths.

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  • Reluctance-type tension-compression double-layer minisize Hopkinson bar system

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[0040] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the related application, not to limit the application. In addition, it should be noted that, for ease of description, only parts relevant to the present application are shown in the drawings.

[0041] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0042] Such as figure 1 and figure 2 as shown, figure 1 It is a structural schematic diagram of a magnetoresistive tension-compression double-layer miniature Hopkinson bar system described in this embodiment, as figure 2 It is a structural schematic diagram of the support ba...

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Abstract

The application discloses a reluctance-type tension-compression double-layer minisize Hopkinson bar system, which includes an electromagnetically-driven coil array emitter comprising a light-operatedmultilevel multi-winding coil array, an emission pipe, a cylindrical bullet, a charge-discharge loop and a shell. A tension-compression double-layer bar piece apparatus includes a compression test barpiece, a tension test bar piece and double-layer support members, wherein the compression test bar piece includes a compression incident bar, a compression transmission bar and compression bar piececentering adjustable sleeve tubes, and the tension test bar piece includes a tension transmission bar, a tension incident bar, a pressure-bearing ring and tension bar piece centering adjustable sleevetubes. In the reluctance-type tension-compression double-layer minisize Hopkinson bar system, a set of a bullet firing apparatus is saved on the whole, and a double-layer structure is used so as to reduce the size of the system, and the parameters and layout of coils are optimized in the structure. The decelerating effect of eddy decelerating force is prevented, and the energy conversion rate isimproved. The system is compatible to bullets with different lengths, and can be used for generating stress wave with various widths.

Description

technical field [0001] The invention relates to the technical field of dynamic impact, and more specifically, relates to a reluctance tension-compression double-layer miniature Hopkinson rod system. Background technique [0002] The traditional pneumatic Hopkinson rod system mainly consists of platform support, air chamber and launching pneumatic mechanism, incident rod / transmission rod / absorbing rod, confining pressure pneumatic device, ultra-dynamic strain high-speed data acquisition instrument and supporting special Hopkinson rod system. The compression bar test analysis software and other components are used to test the stress-strain characteristics of the material under the dynamic impact state and obtain the stress-strain curve under this strain rate. In recent years, with the rapid development of material science, especially after the emergence of new material forming technologies and processing techniques, these new materials are widely used in automobiles, construct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/317G01N3/02
CPCG01N3/02G01N3/317G01N2203/005G01N2203/0075
Inventor 刘战伟张驰涛汪小明侯岳
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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