CN206696078U - A kind of Hopkinson lever system penetrates bar calibrating installation - Google Patents

Abstract

The utility model provides a kind of Hopkinson lever system and penetrates bar calibrating installation, including the rectangle neck being fixed on distribution experiment operation platform, the cuboid slide bar of graduated scale is provided with the rectangle neck, two balancing poles perpendicular to cuboid slide bar are provided with the slide bar, each balancing pole, which is provided with, can pass through the new amesdial of thread adjusting position.By two orthogonal new amesdials, by sliding vertical cuboid slide bar, each amesdial data for penetrating bar and sample end are measured respectively, and then judge whether in the same horizontal line to penetrate bar and sample, by adjusting rod member cushion block and support, the position of center line of bar and sample is penetrated in adjustment.The device has that principle is simple, and it is easy that component is laid, easy to operate, cheap, and test is quick, and data are accurate, promotes the perfect of Hopkinson bar experimental technique, has preferable promotional value.

Description

A kind of Hopkinson lever system penetrates bar calibrating installation

Technical field

It the utility model is related to a kind of material dynamic performance test experiments measure device, particularly a kind of Hopkinson leverage System penetrates bar calibrating installation.

Background technology

Dynamic mechanical response of the research material under the conditions of high strain-rate, have for structure design and investigation of materials important Value.It is split hopkinson bar (Split to study main method applied to rock type materials dynamic test at present Hopkinson Pressure Bars, SHPB) experimental technique.The stress wave propagated in bar is penetrated in the system while undertakes loading And test function, bar is penetrated in stress-displacement versus time relation of sample end face to solve according to the propagation of stress wave.Its principle is By designing loading, ripple is wide be much larger than sample thickness, sample stand under load process be in the state that a kind of local dynamic station balances, so that Effects of stress wave is successfully decoupled with strain rate effect, it is established that stress-strain relation of the material under high strain-rate.Profit at present High strain-rate uniaxial loading, compression, shearing loading can be not only realized with Hopkinson bar experimental technique, there have been developed dynamic Press-cut the complex loading such as Combined Loading, active and passive confined pressure, although the system experimentation research and development many years, specific behaviour Make and experimental technique not yet standardizes both at home and abroad, therefore the space of application development is still very big.

Hopkinson bar experimental technique is based on two basic assumptions.One is one-dimension stress wane it is assumed that another is sample Middle ess-strain is uniformly distributed hypothesis along specimen length.This is required during impact test, each blackberry lily and sample Center strictly in the same horizontal line, so as to ensure rod member and sample, the striking face of rod member and rod member can fully connect Touch, meet the hypothesis of experiment.

Utility model content

In view of the shortcomings of the prior art, a kind of Hopkinson lever system penetrates bar calibrating installation to the utility model, device tool Have that principle is simple, it is easy that component is laid, easy to operate, cheap, and test is quick, and data are accurate, promotes Hopkinson bar real The perfect of technology is tested, there is preferable promotional value.

In order to realize foregoing invention purpose, the utility model provides following technical scheme：A kind of Hopkinson lever system is penetrated Bar calibrating installation, includes, distribution experiment operation platform, and gas big gun emitter is fixed with the platform, and the emitter has supporting Bullet needed for experiment impact, distribution experiment operation platform is laid with incident bar and outgoing bar by fixed test club support, incident Material sample is placed among bar and outgoing bar；The outside both ends of gas big gun emitter and outgoing bar are fixed with energy absorption device；On State experimental operation table and be further fixed on rectangle neck, the neck is built-in with slidable cuboid slide bar, and two cunnings are arranged at neck bottom Bar support plug ensures that rectangular body rod remains plumbness when sliding and testing；Has graduated scale on above-mentioned cuboid slide bar Chi, the scale are provided with two parallel balancing poles, and new the thousand of thread adjusting position can be passed through by being furnished with each balancing pole Divide table, the new amesdial is characterized in embedding steel circle ball in the end of amesdial measuring staff, it is therefore an objective to which amesdial is being tested Not only the accurate of data had been ensure that in sliding process but also has reduced the friction that amesdial measuring staff penetrates bar to Hopkinson bar to greatest extent Damage.

In the Hopkinson bar Preparatory work of experiment stage, first check for whether each equipment is intact, and whether component assembling is suitable, respectively Whether normal work reaches experiment test to individual detecting instrument to ask.Rectangle neck is bolted on experiment porch, is protected Card suitably distance after cuboid slide bar, balancing pole is installed regulation amesdial measuring staff to touch to penetrate bar and then complete Into calibration.Followed by gas big gun emitter, bullet, incident bar, the calibration for being emitted bar, the above-mentioned incident bar of test requirements document, go out The center line for penetrating bar, sample and bullet must be in same horizontal line.First, by gas big gun emitter, incident bar, sample, outgoing Bar is drawn two and is mutually perpendicular to and intersection point crosses the horizontal line and vertical line in the center of circle closely against together in the dead end that faces of outgoing bar, And level marks point and vertical marker point are carried out in the side of outgoing bar, and thread and balancing pole on scale rear sight are adjusted, will The new amesdial of horizontal direction and the new amesdial ball of vertical direction respectively with level marks point and vertical marker point pair Together, it is ensured that two new amesdial test points and the line for being emitted the bar section end center of circle are orthogonal, while record the amesdial Data.Next, cuboid slide bar slowly is close into rectangle neck and remains vertical, the other end note for penetrating bar is moved to Record the test data of amesdial.Continue to move to cube slide bar and test incident bar and sample end respectively by new amesdial Amesdial data, surveyed data are carried out to collect contrast, you can obtain the high and low position information of each rod member, and then judge incident It is offset whether bar and outgoing bar and sample have, and then makes big gun transmitting dress of bringing about the desired sensation by adjusting experiment rod bearing and penetrating bar cushion block Put, incident bar, sample with outgoing bar center line it is consistent.Penetrate after the completion of bar adjustment, repetition measurement is led to calibrating the effect of debugging again Hopkinson bar experiment can be then carried out after crossing test.

Further, the internal diameter of gas big gun emitter, the diameter of bullet, sample, incident bar are equal with outgoing shank diameter.

Compared with prior art, the utility model has advantages below：A kind of Hopkinson lever system penetrates bar calibrating installation, The device has that principle is simple, and it is easy that component is laid, easy to operate, cheap, and test is quick, and test data is accurate, promotes The development of Hopkinson bar experimental technique, there is preferable promotional value.

Brief description of the drawings

Brief description of the drawings of the present utility model is as follows：

Fig. 1 is Hopkinson bar experimental system floor map；

Fig. 2 is that bar balance correction device side schematic view is penetrated in experiment

Fig. 3 is calibrating installation amesdial schematic diagram

Description of reference numerals：

1-energy absorption device, 2-distribution experiment operation platform, 3-stage support

4-gas big gun emitter 5-bullet, 6-gas big gun emitter bearing

7-rectangle neck 8-incident bar, 9-rectangular card slot bolt

10-sample, 11-slide bar support plug 12-cuboid slide bar

13-outgoing bar 14-test club, 15-energy absorption device of support

16-scale rear sight 17-thread, 18-balancing pole

19-penetrate bar cushion block 20-new amesdial 21-amesdial measuring staff

22-steel circle ball 23-penetrate bar

Embodiment

The utility model is described in further detail with reference to the accompanying drawings and examples, the description of this part be only it is exemplary and It is explanatory, there should not be any restriction effect to the scope of protection of the utility model.

A kind of Hopkinson lever system penetrates bar calibrating installation as shown in Figure 1, 2, 3, and wherein Fig. 1 is Hopkinson bar experiment system System floor map, Fig. 2 are that bar balance correction device side schematic view is penetrated in experiment, and Fig. 3 is calibrating installation amesdial schematic diagram.

A kind of Hopkinson lever system penetrates bar calibrating installation, includes, distribution experiment operation platform 2, and gas is fixed with the platform Big gun emitter 4, the emitter have the bullet 5 needed for supporting experiment impact, and distribution experiment operation platform 2 passes through fixed experiment Bar support 14 is disposed with incident bar 8 and outgoing bar 13, and material sample 10 is placed among incident bar 8 and outgoing bar 13；Gas big gun is sent out The outside both ends of injection device 4 and outgoing bar 13 are fixed with energy absorption device 15；Above-mentioned experimental operation table 2 is further fixed on rectangle neck 7, The neck is built-in with slidable cuboid slide bar 12, and neck bottom has two slide bar support plugs 11 to ensure that rectangular body rod is sliding Plumbness is remained during test；Has graduated scale 16 on above-mentioned cuboid slide bar 12, the scale is parallel provided with two Balancing pole 18, equipped with the new amesdial 20 of the adjusting position of thread 17, the new amesdial can be passed through on each balancing pole It is characterized in embedding steel circle ball in the end of amesdial measuring staff 21, it is therefore an objective to which amesdial had both ensured in sliding process is tested Data accurate and the frictionally damage that amesdial measuring staff penetrates to Hopkinson bar bar is reduced to greatest extent.

In the Hopkinson bar Preparatory work of experiment stage, first check for whether each equipment is intact, and whether component assembling is suitable, respectively Whether normal work reaches experiment test to individual detecting instrument to ask.Rectangle neck 7 is bolted on experiment porch, is protected Card suitably distance after cuboid slide bar 12, balancing pole 18 is installed regulation amesdial measuring staff 21 to touch to penetrate bar And then complete calibration.Followed by gas big gun emitter 4, bullet 5, incident bar 8, the calibration for being emitted bar 13, in test requirements document The center line for stating incident bar 8, outgoing bar 13, sample 10 and bullet 5 must be in same horizontal line.First, by gas big gun emitter 4th, incident bar 8, sample 10, outgoing bar 13 be closely against together, draws two in the dead end that faces of outgoing bar and is mutually perpendicular to and intersection point The horizontal line and vertical line in the center of circle are crossed, and level marks point and vertical marker point are carried out in the side of outgoing bar, adjusts graduation apparatus Thread 17 and balancing pole 18 on chi 16, by the new amesdial of horizontal direction and the ball of new amesdial 20 of vertical direction Alignd respectively with level marks point and vertical marker point, it is ensured that two new amesdial test points and the outgoing bar section end center of circle Line is orthogonal, while records the data of the amesdial.Next, cuboid slide bar 12 is slowly close to rectangle neck 9 simultaneously Remain vertical, be moved to the test data for the other end record amesdial for penetrating bar.Continue to move to cube slide bar 12 by New amesdial tests the amesdial data of incident bar and sample end respectively, surveyed data is carried out to collect contrast, you can obtain The high and low position information of each rod member is obtained, and then judges whether incident bar 8 and outgoing bar 13 and sample 10 have offset, Ran Houtong Overregulating experiment rod bearing 14 and penetrating bar cushion block 19 makes to bring about the desired sensation in big gun emitter 4, incident bar 8, sample 10 and outgoing bar 13 Heart line is consistent.Penetrate after the completion of bar adjustment, repetition measurement is to calibrate the effect of debugging again, by can then carry out Hopkinson bar after test Experiment.

Claims (2)

1. a kind of Hopkinson lever system penetrates bar balance correction device, it is characterised in that described penetrate in bar balance correction device is wrapped Include：

Rectangle neck is fixed with distribution experiment operation platform, the interior cuboid vertical rod for being provided with graduated scale in the rectangle neck；It is described Bottom of upright rod causes rectangle neck phase and rectangular body rod to keep vertical provided with two vertical rod support plugs, and two are provided with the vertical rod Perpendicular to the balancing pole of cuboid vertical rod adjustable position；Each balancing pole, which is provided with, can pass through thread adjusting position New amesdial, the measuring staff of the amesdial is with penetrating bar close contact.

2. Hopkinson lever system according to claim 1 penetrates bar balance correction device, it is characterised in that the bar of penetrating is put down In weighing apparatus calibrating installation,

The measuring staff end of new amesdial embeds steel circle ball, and the measuring staff end circle ball of two new amesdials is cut with penetrating boom end The line at face center is mutually perpendicular to.