CN104237014B - High-speed dynamic compression test device - Google Patents
High-speed dynamic compression test device Download PDFInfo
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- CN104237014B CN104237014B CN201410550001.3A CN201410550001A CN104237014B CN 104237014 B CN104237014 B CN 104237014B CN 201410550001 A CN201410550001 A CN 201410550001A CN 104237014 B CN104237014 B CN 104237014B
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- test device
- high speed
- speed dynamic
- connecting rod
- depression bar
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- 238000012669 compression test Methods 0.000 title abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 58
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 4
- 239000011797 cavity material Substances 0.000 claims 3
- 230000003139 buffering effect Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 11
- 238000007906 compression Methods 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 2
- 238000009864 tensile test Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a high-speed dynamic compression test device. The high-speed dynamic compression test device comprises an installation table used for installing a test piece and a loading mechanism used for carrying out compression lading on the test piece, wherein the loading mechanism comprises a press plate used for compressing the test piece and a press rod fixedly connected with the press plate; in particular, the loading mechanism further comprises an unloading rod and a connection rod connected with the other end of the press rod; the connection rod is provided with a cavity; the other end of the press rod is located in the cavity and the extension direction of the press rod is the same as that of the connection rod. The high-speed dynamic compression test device disclosed by the invention is capable of being directly applied to a high-speed tensile tester, realizing high-speed dynamic compression, keeping constant-speed loading, and realizing constant-speed compression loading under loading with low, medium and high strain rates, as well as is safe and reliable.
Description
Technical field
The invention belongs to material mechanical performance dynamic test and representational field, for industries such as automobile, aviations and in particular to
A kind of high speed dynamic compressive test device.
Background technology
During collision scenario, many vehicle materials such as high-strength steel, plastics, composite etc. all can suffer from different degrees of
Compression, can lead to inefficacy and the fracture of material when serious, the Dynamic compressive property of therefore research vehicle material is particularly important.
At present, the tester of compressibility of materials energy mainly has electronic universal tester and drop hammer test platform.Wherein, electronic universal test
The compression test that machine is primarily adapted for use under quasistatic or relatively low strain rate it is impossible to realize high speed dynamic compression, but for high-strength steel,
The materials such as plastics, foam, we focus more on material in middle and high strain rate（1~1000/s）Mechanical characteristic under loading；Drop hammer
Testing stand can realize high speed dynamic compression, can meet specific contact velocity requirement, but will send out in loading procedure medium velocity
Changing, that is, there is energy loss in non-constant velocity loading in impact process.
High speed tensile test machine is mainly used in testing metal, composite, plastic or other material and parts in Large strain speed
Mechanical property under the effect of rate load, has been widely used in fields such as new material research and development, Aero-Space and automobiles, such as measurement automobile
Material parameter under high strain-rate for the high strength steel plate.This equipment has advanced stretching clamp, is mainly used as drawing of material at present
Stretch test, there is in this device software program the function of impact compress simultaneously, but be limited to device hardware, if being directly used in pressure
Contracting test, easily produces unstability and equipment is caused damage.
Content of the invention
The technical problem to be solved is to overcome the deficiencies in the prior art, provides one kind to be used for high speed tensile test
High speed dynamic compressive test device on machine, this high speed dynamic compressive test device is implemented for basic, normal, high differently strained
Constant speed compression-loaded under rate loading, safe and reliable.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that：
High speed dynamic compressive test device, including for installing the erecting bed of test specimen and being used for described test specimen is compressed
The load maintainer loading, described load maintainer includes pressing plate for compressing described test specimen and one end is fixedly connected with described pressing plate
Depression bar, described load maintainer also includes the connecting rod being connected by discharge arm, described connecting rod with the other end of described depression bar
There is cavity, the other end of described depression bar is located in described cavity and the prolonging of the bearing of trend of described depression bar and described connecting rod
Stretch direction identical.
Described discharge arm passes through described depression bar setting, and the both ends of described discharge arm are each passed through described connecting rod
Correspond to two side and extend to outside described connecting rod.
The both ends of described discharge arm are fixedly connected with described connecting rod by securing member respectively.
The bearing of trend extending perpendicularly to described connecting rod of described discharge arm.
Multiple lacking, is offered on the position between the madial wall positioned at described connecting rod of described discharge arm and described depression bar
Mouthful.
Multiple described breach are symmetrically distributed in the symmetrical two side faces of described discharge arm.
It is filled with cushioned material layer, the other end phase of the one side of described cushioned material layer and described depression bar in described cavity
Contact, and another side is contacted with described connecting rod.
It is provided with sealing ring between described depression bar and described connecting rod.
Described high speed dynamic compressive test device also includes guiding mechanism, and described guiding mechanism includes being fixedly installed on described
Guide rod that the support base of erecting bed side is fixedly connected with described support base and the length direction along described guide rod are slidably arranged
Sliding sleeve on described guide rod, described load maintainer also includes the connection being fixedly connected between described depression bar and described pressing plate
Plate, the sidepiece of described connecting plate is fixedly connected with described sliding sleeve.
Described guiding mechanism is provided with 2, and 2 described guiding mechanisms are symmetricly set on two sides of described erecting bed, described
The both sides of connecting plate are fixedly connected with the described sliding sleeve of both sides respectively.
Due to the enforcement of above technical scheme, the present invention compared with prior art has following advantages：
The high speed dynamic compressive test device of the present invention has discharge arm, can be by discharge arm is designed to different shape
And size, realize the unloading experiment of different specified force value.
The high speed dynamic compressive test device of the present invention is capable of high speed dynamic compression, keep constant speed to load it is possible to
Realize the compression-loaded test under basic, normal, high different strain rate.
The high speed dynamic compressive test apparatus structure of the present invention is relatively easy, and manufacturing cost is relatively low, safe and reliable.
Brief description
Fig. 1 is the stereogram of high speed dynamic compressive test device of the present invention；
Fig. 2 is the A-A of connecting rod and depression bar junction in Fig. 1 to sectional view；
Fig. 3 is the side view of high speed dynamic compressive test device of the present invention；
Fig. 4 is the stereogram of the discharge arm of high speed dynamic compressive test device of the present invention；
Fig. 5 is the side view of the discharge arm of high speed dynamic compressive test device of the present invention；
In figure：1st, connecting rod；2nd, securing member；3rd, depression bar；4th, connecting plate；5th, pressing plate；6th, sliding sleeve；7th, guide rod；8th, cavity；9、
Support base；10th, high speed tensile test machine testing stand；11st, sensor base；12nd, sensor；13rd, erecting bed；14th, test specimen；15、
Cushioned material layer；16th, discharge arm；17th, sealing ring；18th, T-slot；19th, breach.
Specific embodiment
Below in conjunction with Figure of description, the present invention is described further：
As shown in accompanying drawing 1 ~ 5, a kind of high speed dynamic compressive test device, for high speed tensile test machine, this high quick-action
State compression test device includes the erecting bed 13 for installing test specimen 14 and the loading machine for test specimen 14 is compressed with loading
Structure, the depression bar 3 that this load maintainer includes pressing plate 3 for compression specimens 14, one end is fixedly connected with pressing plate 5 and pass through discharge arm
The connecting rod 1 that 16 are connected with the other end of depression bar 3, connecting rod 1 has a cavity 8, the other end of depression bar 3 be located in cavity 8 and
The bearing of trend of depression bar 3 is identical with the bearing of trend of connecting rod 1.
Discharge arm 16 is arranged through depression bar 3, and the both ends of discharge arm 16 are each passed through the corresponding two side of connecting rod 1
And extend to outside connecting rod 1.The both ends of discharge arm 16 are fixedly connected with connecting rod 1 by securing member 2 respectively, and securing member 2 is
Bolt.
The bearing of trend extending perpendicularly to connecting rod 1 of discharge arm 16.
Position between the madial wall positioned at connecting rod 1 of discharge arm 16 and depression bar 3 offers multiple breach 19, breach 19
Size and the depth can be adjusted as needed.Specifically, breach 19 can symmetrically offer 4, and 4 breach 19 are respectively
It is symmetricly set on the two ends of discharge arm 16 and the relative two side faces of respective end.
It is filled with cushioned material layer 15, the other end of the one side of cushioned material layer 15 and depression bar 3 in the cavity 8 of connecting rod 1
Portion contacts, and another side is contacted with connecting rod 1.
In order that depression bar 3 will not rock in the cavity 8 of connecting rod 1, arrange between the inwall of depression bar 3 and connecting rod 1
There is sealing ring 17.
The high speed dynamic compressive test device of the present invention also includes guiding mechanism, and guiding mechanism includes being fixedly installed on installation
Guide rod 7 that the support base 9 of platform 13 side is fixedly connected with support base 9 and the length direction along guide rod 7 are slidably arranged in guide rod
Sliding sleeve 6 on 7, load maintainer also includes the connecting plate 4 being fixedly connected between depression bar 3 and pressing plate 5, the sidepiece of connecting plate 4 with
Sliding sleeve 6 is fixedly connected.
Specifically, guiding mechanism is provided with 2, and 2 guiding mechanisms are symmetricly set on two sides of erecting bed 13, connecting plate 4
Both sides be fixedly connected with the sliding sleeve 6 of both sides respectively.
The operation principle of the present invention：
Sensor base 11, sensor base 11 have been bolted to connection on high speed tensile test machine testing stand 10
On sensor 12 for dynamometry is installed, side is provided with erecting bed 13 on the sensor 12, and erecting bed 13 is placed test examination
Part 14；The support base 9 of guiding mechanism passes through T-slot 18 company of being fixed on bolt and high speed tensile test machine testing stand 10
Connect, guiding mechanism is located at two sides relatively of erecting bed 13, there is wider test scope and the measurement visual field；Compression test device
Connecting rod 1 is attached by screw thread with high speed tensile test machine.
After on-test, connecting rod 1 is moved along the length direction of guide rod 7 by sliding sleeve 6 with dynamic pressure plate 5, and test specimen 14 is pressurized,
Sensor 12 dynamometry, tests normal termination；If test force exceedes discharge arm 16 rated value, discharge arm 16 ruptures, connecting rod 1 and pressure
Bar 3 produces relative motion, and depression bar 3 extrudes cushioned material layer 15, plays the effect absorbing dump energy, protection test equipment, examination
Test end.
The compression of test in process of the test, can be measured using non-contact measurement method；Under low strain dynamic rate loads
The piezo-electric crystal force snesor dynamometry that can be directly carried using high speed tensile test machine；Middle and high strain rate load test operating mode
In, it is possible to use paster force snesor dynamometry.
Above the present invention is described in detail, its object is to allow the personage being familiar with this art will appreciate that this
The content of invention is simultaneously carried out, and can not be limited the scope of the invention with this, all Spirit Essence institutes according to the present invention
The equivalence changes made or modification, all should cover within the scope of the present invention.
Claims (8)
1. a kind of high speed dynamic compressive test device, including for installing the erecting bed of test specimen and being used for described test specimen is pressed
The load maintainer that contracting loads, it is fixing with described pressing plate even that described load maintainer includes pressing plate for compressing described test specimen and one end
The depression bar that connects it is characterised in that：Described load maintainer also includes the connection being connected by discharge arm with the other end of described depression bar
Bar, described connecting rod has a cavity, the other end of described depression bar be located in described cavity and the bearing of trend of described depression bar with
The bearing of trend of described connecting rod is identical, and described discharge arm passes through described depression bar setting, and the two end portions of described discharge arm
Not Chuan Guo the corresponding two side of described connecting rod and extend to outside described connecting rod, described discharge arm extend perpendicularly to institute
State the bearing of trend of connecting rod.
2. high speed dynamic compressive test device according to claim 1 it is characterised in that：The two end portions of described discharge arm
It is not fixedly connected with described connecting rod by securing member.
3. high speed dynamic compressive test device according to claim 1 it is characterised in that：Described discharge arm positioned at described
Multiple breach are offered on the position between the madial wall of connecting rod and described depression bar.
4. high speed dynamic compressive test device according to claim 3 it is characterised in that：Multiple described breach are symmetrical
Symmetrical two side faces in described discharge arm.
5. high speed dynamic compressive test device according to claim 1 it is characterised in that：It is filled with buffering in described cavity
Material layer, the one side of described cushioned material layer is contacted with the other end of described depression bar, and another side and described connecting rod phase
Contact.
6. high speed dynamic compressive test device according to claim 1 it is characterised in that：Described depression bar and described connecting rod
Between be provided with sealing ring.
7. high speed dynamic compressive test device according to claim 1 it is characterised in that：Described high speed dynamic compressive test
Device also includes guiding mechanism, and described guiding mechanism includes being fixedly installed on the support base of described erecting bed side and described
The support guide rod that is fixedly connected of seat and the length direction along described guide rod are slidably arranged in the sliding sleeve on described guide rod, described loading
Mechanism also includes the connecting plate being fixedly connected between described depression bar and described pressing plate, the sidepiece of described connecting plate and described sliding sleeve
It is fixedly connected.
8. high speed dynamic compressive test device according to claim 7 it is characterised in that：Described guiding mechanism is provided with 2
Individual, 2 described guiding mechanisms are symmetricly set on two sides of described erecting bed, the both sides institute with both sides respectively of described connecting plate
State sliding sleeve to be fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550001.3A CN104237014B (en) | 2014-10-17 | 2014-10-17 | High-speed dynamic compression test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550001.3A CN104237014B (en) | 2014-10-17 | 2014-10-17 | High-speed dynamic compression test device |
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| Publication Number | Publication Date |
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| CN104237014A CN104237014A (en) | 2014-12-24 |
| CN104237014B true CN104237014B (en) | 2017-02-15 |
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| CN201410550001.3A Active CN104237014B (en) | 2014-10-17 | 2014-10-17 | High-speed dynamic compression test device |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445125A (en) * | 2016-01-18 | 2016-03-30 | 苏州达美特汽车测试技术有限公司 | High-speed tensile testing machine-based part impulse test apparatus and method |
| CN106706425B (en) * | 2016-11-29 | 2024-06-11 | 苏州达美特汽车测试技术有限公司 | High-speed compression test device |
| CN106872273A (en) * | 2017-02-24 | 2017-06-20 | 中国农业大学 | A kind of single shaft open type compression experimental rig and method |
| CN107843497A (en) * | 2017-12-15 | 2018-03-27 | 防城港市金沙海洋科技有限责任公司 | A kind of resistance to compression degree detection device for auto-parts |
| CN109323935A (en) * | 2018-11-23 | 2019-02-12 | 中国汽车技术研究中心有限公司 | A kind of protective device and impact device of impact device load transducer |
| CN110095342A (en) * | 2019-05-29 | 2019-08-06 | 西安建筑科技大学 | A kind of measuring device and measuring method of metal blank resistance of deformation |
| CN111398039A (en) * | 2020-04-30 | 2020-07-10 | 中国飞机强度研究所 | Device and method for testing mechanical properties of seat cushion material under different strain rates |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5932811A (en) * | 1998-06-16 | 1999-08-03 | Comten Industries, Inc. | Portable foam compression tester |
| CN201277925Y (en) * | 2008-10-30 | 2009-07-22 | 河北理工大学 | Concrete stress-strain full curve test apparatus with loading speed controllable |
| CN102607955B (en) * | 2012-02-17 | 2014-09-17 | 中国地质大学（武汉） | Biaxial compression test device for fractured rock mass |
| CN203148782U (en) * | 2013-04-07 | 2013-08-21 | 安徽农业大学 | Simple material mechanical test machine |
| CN103528890B (en) * | 2013-11-08 | 2015-10-21 | 清华大学苏州汽车研究院（相城） | A kind of three-point bending beam test unit |
| CN204116148U (en) * | 2014-10-17 | 2015-01-21 | 清华大学苏州汽车研究院（相城） | High speed dynamic compressive test device |
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