CN104198278A - Anti-instability clamp for measuring compression performance of composite laminated board with central notch - Google Patents
Anti-instability clamp for measuring compression performance of composite laminated board with central notch Download PDFInfo
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- CN104198278A CN104198278A CN201410440855.6A CN201410440855A CN104198278A CN 104198278 A CN104198278 A CN 104198278A CN 201410440855 A CN201410440855 A CN 201410440855A CN 104198278 A CN104198278 A CN 104198278A
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- laminated board
- composite material
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Abstract
The invention relates to an anti-instability clamp for measuring the compression performance of a composite laminated board with a central notch. The anti-instability clamp is composed of a composite laminated board sample with the central notch, polytetrafluoroethylene sheets, clamping plates, a bolt and a butterfly nut, wherein the composite laminated board sample with the central notch is clamped between two clamping plates, a central circular hole of the composite laminated board sample with the central notch is concentric with central circular holes of the clamping plates, the polytetrafluoroethylene sheets are lined between the clamping plate and the composite laminated board sample with the central notch respectively, the central circular holes and bolt holes of the clamping plates and the polytetrafluoroethylene sheets are in positional correspondence, the bolt is inserted in the bolt hole in the clamping plate at one side, penetrates through two polytetrafluoroethylene sheets and penetrates out of the bolt hole in the clamping plate at the other side, and then the butterfly nut is screwed on the bolt, thus, the anti-instability clamp for measuring the compression performance of the composite laminated board with the central notch is assembled, and the composite laminated board sample with the central notch, which is provided with the anti-instability clamp, is arranged on a testing machine for testing the compression performance.
Description
Technical field
The invention provides a kind of mensuration containing the anti-unstability fixture of center breach composite material laminated board compression performance, belong to experimental test technical field.
Background technology
In the time measuring containing center breach composite material laminated board compression performance, containing center breach composite material laminated board because of the Stiffness unstability that can bend, cause test to carry out, even specimen fails, for this reason, the present invention has developed a kind of new mensuration containing the anti-unstability fixture of center breach composite material laminated board compression performance, can effectively prevent containing the center breach composite material laminated board unstability that bends in the time carrying out compression performance testing experiment, and simple in structure, reliability is high, it is convenient to be installed, friction force is little.
Summary of the invention
1, object: the object of the present invention is to provide a kind of mensuration containing the anti-unstability fixture of center breach composite material laminated board compression performance, unstability prevents from bending while carrying out compression performance test containing center breach composite material laminated board.
2, technical scheme: the present invention is a kind of to be measured containing the anti-unstability fixture of center breach composite material laminated board compression performance, Ta Shiyouhan center breach composite material laminated board sample, clamping plate, bolt, wing nut and teflon plate composition, they link together in the following order:
Bolt → clamping plate → teflon plate → containing center breach composite material laminated board sample → teflon plate → clamping plate → wing nut
Described is the strip sample made from composite material laminated board containing center breach composite material laminated board sample, and intermediate position has circular hole, for measuring the compression performance containing center breach composite material laminated board;
Described clamping plate are narrow perforated metal plates in the middle of two head breadths, intermediate position has circular hole, facilitate Dui Han center breach composite material laminated board sample center hole place crackle germinating and expansion is observed and record, also have 8 bolts hole at its two ends, for being connected with bolt;
Described teflon plate is rectangle ptfe sheet with holes, the position in its hole is identical with clamping plate with size, teflon is the material that a kind of friction factor is very little, can effectively reduce the friction force between the breach composite material laminated board sample of clamping plate Yu Han center;
Described bolt is conventional standard fasteners, and its specification need be determined according to the size of clamping plate and bolt hole thereof;
Described wing nut is the standard fasteners being used in conjunction with bolt;
3, advantage and effect: the present invention can effectively prevent the unstability that bends in the time carrying out compression performance test containing center breach composite material laminated board, simultaneously, can also effectively avoid because the excessive load applying causing of friction force between the breach composite material laminated board sample of clamping plate Yu Han center is inaccurate, the problem such as serious of generating heat, have simple in structure, reliability is high, feature is easily installed.
Brief description of the drawings
Below in conjunction with accompanying drawing and example, the present invention is further described.
Fig. 1 is a kind of containing center breach composite material laminated board sample schematic diagram.
Fig. 2 is clamping plate schematic diagram.
Fig. 3 is teflon plate schematic diagram.
Fig. 4 is wing nut schematic diagram.
Fig. 5 measures containing the anti-unstability clamp structure of center breach composite material laminated board compression performance figure.
In Fig. 5: 1.Han center breach composite material laminated board sample, 2. teflon plate, 3. clamping plate, 4. bolt, 5. wing nut.
Embodiment
In conjunction with Fig. 1 to Fig. 5, the specific embodiment of the present invention is described.
The present invention is a kind of to be measured containing the anti-unstability fixture of center breach composite material laminated board compression performance, and Ta Shiyouhan center breach composite material laminated board sample 1, teflon plate 2, clamping plate 3, bolt 4 and wing nut 5 form.In Fig. 5, two clamping plates 3 Jiang Han center breach composite material laminated board samples 1 are clipped in the middle, should adjust the relative position containing center breach composite material laminated board sample 1 and clamping plate 3, the center hole of Shi Han center breach composite material laminated board sample 1 is concentric with the center hole of clamping plate 3; In order to reduce friction, between clamping plate 3 He Han center breach composite material laminated board samples 1, be encased inside respectively teflon plate 2, should note making center hole and bolt hole position in clamping plate 3 and teflon plate 2 corresponding one by one; In bolt hole by bolt 4 from clamping plate 3 on one side, insert, through after two-layer teflon plate 2 from another side clamping plate 3 bolt hole pass, then wing nut 5 is screwed into bolt 4; By after all bolts 4 and wing nut 5 installations, just formed and measured containing the anti-unstability fixture of center breach composite material laminated board compression performance, and can be arranged on and on testing machine, carry out compression performance testing experiment anti-unstability fixture Han center breach composite material laminated board sample is housed.
Contain in the anti-unstability fixture of center breach composite material laminated board compression performance a kind of mensuration of the present invention, the design of clamping plate 3 is very crucial, it must have enough rigidity to prevent the unstability that bends when the compressive load containing center breach composite material laminated board sample 1, Fig. 2 is clamping plate schematic diagram, its centre position has circular hole, facilitate Dui Han center breach composite material laminated board sample center hole place crackle germinating and expansion is observed and record, clamping plate 3 two ends also have 8 bolts hole, for being connected with bolt, clamping plate 3 should design containing the size of center breach composite material laminated board sample 1 according to reality, in order to prevent from causing because friction force is excessive between clamping plate 3 Yu Han center breach composite material laminated board samples 1 inaccurate the and problem such as serious of generating heat of load applying, need between clamping plate 3 He Han center breach composite material laminated board samples 1, be encased inside teflon plate 2, teflon plate 2 as shown in Figure 3, in teflon plate 2, have center hole and bolt hole, its position should be corresponding with clamping plate 3, and the size of teflon plate 2 should design according to clamping plate 3, bolt 4 and wing nut 5 are standard component, should exert oneself evenly, to avoid dynamics excessive in the time being screwed into wing nut 5, adopt wing nut 5 can effectively control clamping dynamics, meanwhile, make easy to loading and unloading quick.
Claims (1)
1. a mensuration is containing the anti-unstability fixture of center breach composite material laminated board compression performance, it is characterized in that: Ta Shiyouhan center breach composite material laminated board sample, clamping plate, bolt, wing nut and teflon plate composition, they link together in the following order:
Bolt → clamping plate → teflon plate → containing center breach composite material laminated board sample → teflon plate → clamping plate → wing nut
Described is the strip sample made from composite material laminated board containing center breach composite material laminated board sample, and intermediate position has circular hole, for measuring the compression performance containing center breach composite material laminated board;
Described clamping plate are narrow perforated metal plates in the middle of two head breadths, intermediate position has circular hole, facilitate Dui Han center breach composite material laminated board sample center hole place crackle germinating and expansion is observed and record, also have 8 bolts hole at its two ends, for being connected with bolt;
Described teflon plate is rectangle ptfe sheet with holes, the position in its hole is identical with clamping plate with size, teflon is the material that a kind of friction factor is very little, can effectively reduce the friction force between the breach composite material laminated board sample of clamping plate Yu Han center;
Described bolt is securing member, and its specification need be determined according to the size of clamping plate and bolt hole thereof;
Described wing nut is the securing member being used in conjunction with bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440855.6A CN104198278A (en) | 2014-09-01 | 2014-09-01 | Anti-instability clamp for measuring compression performance of composite laminated board with central notch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440855.6A CN104198278A (en) | 2014-09-01 | 2014-09-01 | Anti-instability clamp for measuring compression performance of composite laminated board with central notch |
Publications (1)
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| CN104198278A true CN104198278A (en) | 2014-12-10 |
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|---|---|---|---|
| CN201410440855.6A Pending CN104198278A (en) | 2014-09-01 | 2014-09-01 | Anti-instability clamp for measuring compression performance of composite laminated board with central notch |
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| CN (1) | CN104198278A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226154A (en) * | 2016-06-30 | 2016-12-14 | 马鞍山钢铁股份有限公司 | Anti-bending device for thin plate tension and compression strain controlling fatigue test |
| CN106769424A (en) * | 2016-12-12 | 2017-05-31 | 北京航空航天大学 | A kind of anti-unstability universal fixturing for edge/central indentation composite laminated plate compression performance test |
| CN107860649A (en) * | 2017-11-03 | 2018-03-30 | 天津科技大学 | One kind singly takes the anti-bending fixture of riveted joint and its design method |
| CN109916707A (en) * | 2019-03-20 | 2019-06-21 | 上海交通大学 | A kind of thin-wall tube, which is bent, opens up integrated experimental rig and method |
| CN110514513A (en) * | 2019-08-09 | 2019-11-29 | 中国石油天然气集团有限公司 | One kind is for resistant to bending mold and application method in plate-shape metal compression experiment |
| CN112697619A (en) * | 2020-12-15 | 2021-04-23 | 上海交通大学 | Metal circulating loading device under ultrasonic vibration condition |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226154A (en) * | 2016-06-30 | 2016-12-14 | 马鞍山钢铁股份有限公司 | Anti-bending device for thin plate tension and compression strain controlling fatigue test |
| CN106769424A (en) * | 2016-12-12 | 2017-05-31 | 北京航空航天大学 | A kind of anti-unstability universal fixturing for edge/central indentation composite laminated plate compression performance test |
| CN106769424B (en) * | 2016-12-12 | 2019-04-09 | 北京航空航天大学 | A kind of anti-unstability universal fixturing tested for edge/central indentation composite laminated plate compression performance |
| CN107860649A (en) * | 2017-11-03 | 2018-03-30 | 天津科技大学 | One kind singly takes the anti-bending fixture of riveted joint and its design method |
| CN107860649B (en) * | 2017-11-03 | 2020-06-05 | 天津科技大学 | Single-lap riveting joint bending-prevention clamp and design method thereof |
| CN109916707A (en) * | 2019-03-20 | 2019-06-21 | 上海交通大学 | A kind of thin-wall tube, which is bent, opens up integrated experimental rig and method |
| CN109916707B (en) * | 2019-03-20 | 2021-07-23 | 上海交通大学 | Thin-walled pipe bending and unfolding integrated test device and method |
| CN110514513A (en) * | 2019-08-09 | 2019-11-29 | 中国石油天然气集团有限公司 | One kind is for resistant to bending mold and application method in plate-shape metal compression experiment |
| CN112697619A (en) * | 2020-12-15 | 2021-04-23 | 上海交通大学 | Metal circulating loading device under ultrasonic vibration condition |
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Application publication date: 20141210 |
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| RJ01 | Rejection of invention patent application after publication |