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Particle matter one-dimensional stress wave attenuation effect experiment device

A technology of stress wave attenuation and testing equipment, which is applied in the direction of testing material strength, measuring equipment, and instruments using primary impact force, and can solve the problems of lack of testing the axial stress wave attenuation characteristics of granular materials, so as to save test time and test pieces The effect of less material and high test efficiency

Pending Publication Date: 2017-07-04
PLA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In conclusion, the existing problems in the prior art are: lack of devices for testing the axial stress wave attenuation characteristics of particulate matter

Method used

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  • Particle matter one-dimensional stress wave attenuation effect experiment device
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  • Particle matter one-dimensional stress wave attenuation effect experiment device

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Experimental program
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Embodiment Construction

[0018] Such as Figure 1-3 As shown, the test device for the one-dimensional stress wave attenuation effect of particulate matter of the present invention includes an incident rod 2, a transmission rod 3 and an absorption rod 4 arranged coaxially along the direction of bullet 1 emission, and also includes a sleeve 5, the sleeve 5 Particulate matter 51 is contained inside, and one end of the sleeve 5 is loosely fitted on the incident rod 2 , and the other end is loosely fitted on the transmission rod 3 .

[0019] As an improvement, one is provided at both ends of the particulate matter 51 in the sleeve 5, and the pads 52, 53 are loosely fitted with the sleeve 5 to encapsulate the particulate matter 51 in the sleeve 5, and one of the pads 52 It is pressed against the incident rod 2 , and another spacer 53 is pressed against the transmission rod 3 .

[0020] As a further improvement, multiple pairs of sleeve screw holes 54 are provided along the axis on the sleeve 5, and each pa...

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Abstract

The invention discloses a particle matter one-dimensional stress wave attenuation effect experiment device. The particle matter one-dimensional stress wave attenuation effect experiment device comprises an incident bar (2), a transmission bar (3), and an absorbing rod (4) which are coaxially and successively arranged along the transmission direction of a bullet (1), and also comprises a sleeve (5); particle matters (51) are introduced into the sleeve (5); the incident bar (2) is loosely sleeved by one end of the sleeve (5), and the transmission bar (3) is loosely sleeved by the other end of the sleeve (5). According to the particle matter one-dimensional stress wave attenuation effect experiment device, test piece length is adjustable, and experiment efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of material dynamics test, in particular to a one-dimensional stress wave attenuation effect test device for granular matter with adjustable test piece length and high test efficiency. Background technique [0002] At present, occasional explosion disasters such as gas explosions and terrorist attacks occur frequently, and the stress waves generated by explosions often cause damage and damage to engineering structures, and even collapse. Particulate matter (such as sand, soil, etc.) is low in cost, easy to obtain, and has the characteristics of being porous and easy to compress, so that the stress wave will obviously attenuate during the process of propagating in it, which makes granular matter often used as a construction project. The protective layer to reduce the possible stress wave impact. However, the current theoretical models used to describe the propagation of stress waves in granular matter are mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/30
CPCG01N3/30G01N2203/0284G01N2203/0676
Inventor 陈力于潇姜锡权颜海春方秦张锦华周永康柳锦春张亚栋
Owner PLA UNIV OF SCI & TECH