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Separate Hopkinson rod tension/compression-torsion dynamic compound loading device and operation method

A composite loading and loading device technology, applied in measuring devices, using stable tension/compression to test material strength, analyzing materials, etc., can solve the inability to achieve tension/compression-torsion composite dynamic dynamic load testing, longitudinal wave asynchrony and other problems, to achieve the effect of small footprint, solving asynchrony, and simple operation

Active Publication Date: 2022-06-07
TAIYUAN UNIV OF TECH
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  • Claims
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Problems solved by technology

[0006] In order to solve the problem that the existing separated Hopkinson rod cannot realize the tension / compression-torsion compound dynamic load test due to the asynchrony of the transverse wave and the longitudinal wave, the present invention provides a separated Hopkinson rod tension / compression- Torsional dynamic compound loading device and operation method

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  • Separate Hopkinson rod tension/compression-torsion dynamic compound loading device and operation method
  • Separate Hopkinson rod tension/compression-torsion dynamic compound loading device and operation method
  • Separate Hopkinson rod tension/compression-torsion dynamic compound loading device and operation method

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Embodiment Construction

[0032] The present invention is further described below in conjunction with specific embodiments.

[0033] A separate Hopkinson rod pull / pressure-torsion dynamic composite loading device, such as Figure 1 Shown: including incident rod 1, torsional loading device, tensile / compression loading device, clamping fastening mechanism and synchronous release mechanism; The tensile / compression loading apparatus comprises a horizontal energy storage device 5, a lead screw transmission 6 and an internal worm gear transmission, the torsional loading apparatus comprising a torsional energy storage device 2, a horizontal slider 3 and a torsional fixing flange 4, such as Figure 2shown; The torsional energy storage device 2 is fixed to the horizontal slider 3, the horizontal slider 3 is provided with a fixed threaded hole in the four corners of the bottom surface, the torsional fixing flange 4 is provided at the front end of the torsional energy storage device 2, the torsional energy storage de...

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Abstract

The invention discloses a separate Hopkinson rod tension / compression-torsion dynamic composite loading device and an operation method, belonging to the technical field of multi-axis dynamic experiment testing. The device includes an incident rod, a torsional loading device, a tension / compression loading device, a clamping fastening mechanism and a synchronous release mechanism; Stretch / compression and torsional strain energy are stored in different positions respectively, and the designed synchronous release device is used to realize the instantaneous synchronous release of tension / compression and torsion energy; also through the distance difference between the two clamping and fastening mechanisms, It makes up for the asynchronous loading caused by the inconsistency of longitudinal wave and shear wave velocity, and realizes the synchronous loading of normal stress and shear stress. The invention can be realized based on the simple transformation of the traditional Hopkinson bar, and the cost is low; it also solves the defect that the traditional Hopkinson bar is difficult to carry out synchronous composite loading, and can be used for the experimental test of the dynamic multi-axis mechanical properties of materials.

Description

Technical field [0001] The present invention belongs to the field of multi-axis dynamic experimental testing technology, specifically a separate Hopkinson rod pull / pressure - torsion dynamic composite loading device and operating method. Background [0002] In actual engineering, the service environment of materials is often very complex, so the study of the mechanical behavior of materials under complex stress conditions has become a hot topic in related fields, which is of great help to fully understand the properties of materials, and is also of great significance to the rational use and optimization of materials. Typically, under complex loading conditions (i.e., complex stress states), the response, deformation, and failure patterns of the material exhibit characteristics that are significantly different from those in simple loading conditions. However, the currently commonly used dynamic experimental device (Hopkinson rod device) can only obtain the mechanical response of...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08G01N3/22G01N3/02
CPCG01N3/08G01N3/22G01N3/02
Inventor 苏步云方慧青金涛雷建平
Owner TAIYUAN UNIV OF TECH
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