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An Incidence Rod with Dynamic Composite Loading

A composite loading and incident rod technology, which is applied in the direction of testing material strength, instruments, and measuring devices using one-time impact force, can solve the problems of inconvenient implementation, overall complexity of the device, and difficulty in synchronous triggering of compression waves and torsional waves, etc., to achieve convenient implementation , reduce the complexity, the effect of simple structure

Active Publication Date: 2022-06-17
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The current separated Hopkinson bar device includes compression bar, tie bar and torsion bar, which are only suitable for single load loading and cannot realize combined loading tests (such as tension-torsion, compression-torsion combined loading)
Part of the separated Hopkinson bar device with composite loading function is mainly realized by adding a torque loader, but this kind of realization method, the overall complexity of the device, difficulty in synchronous triggering of compression waves and torsional waves, and inconvenient implementation

Method used

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  • An Incidence Rod with Dynamic Composite Loading
  • An Incidence Rod with Dynamic Composite Loading
  • An Incidence Rod with Dynamic Composite Loading

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Experimental program
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Embodiment Construction

[0021] The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without creative work fall within the protection scope of the embodiments of the present application.

[0022] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by ” etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the embodiments of the present application and simplif...

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Abstract

The present application discloses an incident rod with dynamic composite loading, which includes a first rod segment, a second rod segment and a compression-torsion metamaterial segment; the first rod segment, the compression-torsion metamaterial segment and the second rod segment are sequentially aligned along the same axis direction Setting; one end of the compression-torsion metamaterial segment is connected with one end of the first rod segment, and the other end is connected with one end of the second rod segment. The compression / tension wave can be converted into a compression / tension complex wave by using the compression-torsion metamaterial segment. When hitting the first rod segment, the second rod segment can output compression / tension and torsion through the compression-torsion metamaterial segment. The composite load can meet the requirements of composite loading test. This structural improvement creatively combines metamaterials into the incident rod, so that the improved incident rod has a composite loading function. Compared with the existing compound loading implementation method, the compression / tension wave and the torsional wave are simultaneously generated in the second rod section, and there is no problem of synchronous triggering; and the structure is simple, which greatly reduces the complexity of the device.

Description

technical field [0001] The present application relates to the technical field of material dynamic experiments, in particular to an incident rod with dynamic composite loading. Background technique [0002] In a series of practical problems in a wide range of fields such as engineering technology, military technology, scientific research, and even daily life, people will encounter various explosion / shock load problems, and can observe objects in explosion / shock loads. The mechanical response under shock load is significantly different from that under static load. High strain rate deformation is one of the main characteristics of material response, therefore, understanding the mechanical response of materials at high strain rates will greatly facilitate the engineering application and engineering design of these materials. At present, the split Hopkinson rod is the most widely used experimental device for testing the mechanical properties of materials at high strain rates, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/30
CPCG01N3/30G01N2203/001G01N2203/0026
Inventor 胡玲玲殷秋运
Owner SUN YAT SEN UNIV
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