Clustered Hopkinson pressure bar experimental device
An experimental device and a clustered technology, which is applied in the field of clustered Hopkinson compression rod experimental devices, can solve the problems of low strain rate of separated Hopkinson compression rods, and achieve the goals of reducing attenuation, improving precision and improving strain rate effect Effect
Inactive Publication Date: 2020-06-26
南京山河特种设备科技有限公司
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Problems solved by technology
[0006] The purpose of the present invention is to overcome the technical defects such as the low strain rate of the existing separated Hopkinson compression bars, and the geometric dispersion effect becomes prominent with the increase of the rod diameter, and provide a clustered Hopkinson compression bar experimental device
Method used
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[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0024] Such as figure 1 As shown, a cluster-type Hopkinson pressure rod experimental device is mainly composed of compressed air launch system 1, impact bullet 2, cluster-type incident rod 3, cluster-type transmission rod 4, absorption rod 5, buffer 6, modularization and standardization The support platform 7 constitutes. The compressed air launch system 1 , clustered incident rods 3 , clustered transmission rods 4 , absorbing rods 5 , and buffers 6 are sequentially arranged and placed above the modularized standardized support platform 7 . The impact bullet 2 is located in the compressed air launch system 3 . The test piece can be fixed between the clustered incident rod 3 and ...
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The invention provides a clustered Hopkinson pressure bar experimental device. The device comprises a compressed air emission system, an impact bullet, a cluster type incident rod, a cluster type transmission rod, an absorption rod, a buffer and a supporting platform, and the compressed air emission system, the cluster type incident rod, the cluster type transmission rod, the absorption rod and the buffer are sequentially arranged on the supporting platform. The impact bullet is located in the compressed air emission system, a test piece is fixed between the bundled incident rod and the bundled transmission rod, the bundled incident rod and the bundled transmission rod respectively comprise a plurality of square rods with uniform sections, a plurality of hoops and a plurality of circular hoop transition pieces, and the plurality of square rods are bundled and fixed through the hoops to form a bundled rod with a square section. The problem that the transverse inertia effect is prominentalong with increase of the rod diameter can be effectively solved, the experiment research requirements of engineering materials such as rock and concrete and some internal microstructure non-uniformmaterials can be met, an experiment result is effective and reliable, and the experiment precision is high.
Description
technical field [0001] The invention relates to the field of experimental equipment for dynamic mechanical properties of materials, in particular to a cluster-type Hopkinson pressure bar experimental device. Background technique [0002] At present, in the field of materials science, the most widely used method for measuring the mechanical properties of materials under high strain rates is the separated Hopkinson compression bar technology, and its basic principle is the one-dimensional stress wave theory. The experimental device usually consists of a compressed air launch system, an impact bullet, a single circular input rod, a single circular transmission rod, an absorption rod, a buffer, and a measurement system. Impact bullets, input rods and transmission rods are mostly made of high-strength metal, and they are all in an elastic state during the experiment, and generally have the same diameter and material. The specimen is clamped between the input rod and the transmis...
Claims
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IPC IPC(8): G01N3/313G01N3/02
CPCG01N3/02G01N3/313G01N2203/001G01N2203/0075
Inventor 王源宗周红谢方晋冬艳李新平罗忆
Owner 南京山河特种设备科技有限公司