CN100485353C - Curling preventor of axial compression fatigue experiment - Google Patents
Curling preventor of axial compression fatigue experiment Download PDFInfo
- Publication number
- CN100485353C CN100485353C CNB2004100813003A CN200410081300A CN100485353C CN 100485353 C CN100485353 C CN 100485353C CN B2004100813003 A CNB2004100813003 A CN B2004100813003A CN 200410081300 A CN200410081300 A CN 200410081300A CN 100485353 C CN100485353 C CN 100485353C
- Authority
- CN
- China
- Prior art keywords
- curling
- sample
- curve
- antibending
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention discloses a curling preventing device of an axial compression fatigue experiment, wherein coupled curling preventing clamping plates comprise an upper pair and a lower pair (1, 2An antibending device in axial compressing fatigue test consists of two pairs of antibending clamp plates such as top pair of antibending clamp plates and bottom pair of antibending clamp plates. It f); the upper pair of curling prevention clamping plates (1) and the lower pair of curling preventing clamping plates (2) respectively clamp the upper half part and the lower half part of a test sampleeatures that two pairs of antibending clamp plates are used to clamp top part and bottom part of testing piece separately, the gap between two pairs of antibending clamp plates is 2 - 3 times of testi (6); the height of a gap between the upper pair of curling preventing clamping plates (1) and the lower pair of curling preventing clamping plates (2) is one to two times more than the thickness of tng piece thickness. he test sample (6). The present invention has the advantages that oversize deformation and press bending of a thin-plate test sample can be effectively prevented, and the axial compression fatigue experiment can normally proceed; loading errors caused by the curling preventing device can be remarkably reduced, and the experimental result is accurate and reliable; the curling preventing device has the characteristics of simple structure, convenient installation and favorable effect of curling prevention.
Description
Affiliated technical field
The present invention relates to a kind of physical property test device of metal material, relate in particular to the axial compression fatigue device of a kind of sheet metal or elongate rod.
Background technology
In the scientific research or practical application of metal material, often need carry out the axial compression fatigue of sheet metal or elongate rod.For example, in order to guarantee the flight safety of aircraft, before aircraft manufacturing, must carry out axial compression fatigue to this aluminium alloy sheet as the aluminium alloy sheet of aircraft skin.
When carrying out the axial compression fatigue of sheet metal or elongate rod (below be referred to as sample), behind the sample pressurized flexural deformation excessive, need to use curve-proof device.Existing curve-proof device adopts a pair of curve-proof splint that links together with sample to form.Because in the process of the test, along with the variation that acts on the alternate load on the sample, sample is is constantly elongating or shortening.Therefore there is following shortcoming in existing curve-proof device: if a curve-proof splint and sample holder get tension, will hinder sample with the load alternation dilatation; And because curve-proof splint might also bear fractional load, make load that sample bears, cause the load error, thereby influence accuracy of experimental results less than the load capacity that testing machine applied.If two curve-proof splints and sample holder are too loose, then elongated, frivolous sample flexural deformation is excessive, and the anti-Qu Xiaoguo of curve-proof device is relatively poor.And under the alternate load effect, the curve-proof splint that does not have to clamp can produce vibration, even the pine that the holding screw of strap can be shaken, shakes, and causes sample flexural deformation excessive, normally the carrying out of influence test.When especially carrying out high frequency fatigue test, much smaller during the relative low frequency of the load value that testing machine applies, load error that tension produces is relative can to become bigger if curve-proof splint and sample holder get, and also can become more terrible and press from both sides the curve-proof splint vibration that causes too loose.In a word, utilize existing curve-proof device to carry out the axial compression fatigue of sheet metal or elongate rod, have shortcomings such as operating difficulties, difficulty of test is big, the test result error is bigger.
Summary of the invention
Purpose of the present invention just provides a kind of curling preventor of axial compression fatigue experiment, it is used for the axial compression fatigue of sheet metal or elongate rod, can overcome the deficiency of existing curve-proof device, prevent that effectively sample press-bending distortion is excessive, axial compression fatigue is finished smoothly; Reduce the load error that curve-proof device causes significantly, make test findings accurately, reliably; And this apparatus structure is simple, easy for installation, anti-song is effective.
The present invention solves its technical matters, the technical scheme that is adopted is: a kind of curling preventor of axial compression fatigue experiment, comprise paired curve-proof splint, the anti-song that is used for sample, its design feature is: paired curve-proof splint is upper and lower two pairs, goes up curve-proof splint and the following first half and the Lower Half that curve-proof splint is clamped sample respectively; Between upper and lower two pairs of curve-proof splints the height in slit be sample thickness 2-3 doubly; Upper and lower two pairs of inside surfaces that curve-proof splint contacts with sample, the part liner near the sample termination has anti-skidding liner plate vertically, near the part liner in the middle of the sample anti-bent liner plate is arranged, and the friction factor of anti-skidding liner plate is greater than the friction factor of anti-bent liner plate.
Compared with prior art, the invention has the beneficial effects as follows: existing a pair of curve-proof splint is changed into the two pairs of clamping plate up and down that leave the gap, make sample under the tight constraint of clamping plate, when bearing the alternate load variation, flexible space can be arranged, load can not passed on to clamping plate and cause test error, reduce the load error that curve-proof device brings significantly, make test findings accurately, reliable; Also avoided simultaneously clamping plate to retrain the loose vibration that brings, loosening, slippage, anti-bent effective, warranty test reliably carries out, and need not frequent adjustment, and is easy to operate.Curve-proof splint is bigger with the contact friction force of sample by the part of sample termination, has increased holding force, can prevent the sample slippage better; Curve-proof splint is smaller with the contact friction force of sample by the part in the middle of the sample, has reduced the contact friction force of this place and sample, can further reduce the load error that curve-proof device brings.
Above-mentioned anti-bent liner plate be two-layer more than.
Above-mentioned anti-skidding liner plate is formed for the polyester-cotton blend material, and anti-bent liner plate is that PTFE film material is formed.Adopt ripe anti-song, anti-slip material, make the present invention simple in structure, install easily, cost is low, enforcement is convenient.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Embodiment: Fig. 1 illustrates, a kind of embodiment of the present invention: a kind of curling preventor of axial compression fatigue experiment, comprise paired curve-proof splint, and be used for the anti-song of sample 6.Paired curve-proof splint is upper and lower two pairs 1,2, goes up curve-proof splint 1 and the following first half and the Lower Half that curve-proof splint 2 is clamped sample 6 respectively.
The inside surface that upper and lower two pairs of curve- proof splints 1,2 contact with sample 6, part liner near the sample termination has anti-skidding liner plate 3 vertically, near the part liner in the middle of the sample anti-bent liner plate 4 is arranged, the friction factor of anti-skidding liner plate 3 is greater than the friction factor of anti-bent liner plate 4.
The anti-bent liner plate 4 of upper and lower two pairs of curve-proof splints, 1,2 inside surface liners of the present invention promptly can be divided into and corresponding two of upper and lower two pairs of curve-proof splints in the axial direction, also the gapless monoblock of upper and lower perforation as shown in Figure 1.And also can leave gap 5 between anti-skidding liner plate 3 and the anti-bent liner plate 4.
During use, sample 6 is installed in the upper and lower anchor clamps of fatigue tester, and provides pressure will prevent that bent plate and sample 6 clamp, and can experimentize by testing machine.
Claims (3)
1, a kind of curling preventor of axial compression fatigue experiment, comprise paired curve-proof splint, the anti-song that is used for sample (6), it is characterized in that: described paired curve-proof splint is upper and lower two to (1,2), goes up curve-proof splint (1) and the first half and the Lower Half of time curve-proof splint (2) being clamped sample (6) respectively; Slit between upper and lower two pairs of curve-proof splints (1,2) is 2-3 a times of sample (6) thickness; The inside surface that upper and lower two pairs of curve-proof splints (1,2) contact with sample (6), part liner near the sample termination has anti-skidding liner plate (3) vertically, near the part liner in the middle of the sample anti-bent liner plate (4) is arranged, the friction factor of anti-skidding liner plate (3) is greater than the friction factor of anti-bent liner plate (4).
2, a kind of curling preventor of axial compression fatigue experiment according to claim 1 is characterized in that: described anti-bent liner plate (4) is for more than two-layer.
3, a kind of curling preventor of axial compression fatigue experiment according to claim 1 is characterized in that: described anti-skidding liner plate (3) is formed for the polyester-cotton blend material, and anti-bent liner plate (4) is formed for PTFE film material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100813003A CN100485353C (en) | 2004-11-23 | 2004-11-23 | Curling preventor of axial compression fatigue experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100813003A CN100485353C (en) | 2004-11-23 | 2004-11-23 | Curling preventor of axial compression fatigue experiment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1779433A CN1779433A (en) | 2006-05-31 |
| CN100485353C true CN100485353C (en) | 2009-05-06 |
Family
ID=36769838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100813003A Expired - Fee Related CN100485353C (en) | 2004-11-23 | 2004-11-23 | Curling preventor of axial compression fatigue experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100485353C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101271102B (en) * | 2008-05-06 | 2011-06-15 | 青岛理工大学 | Cement base material direct pulling stress corrosion instrument |
| CN101451934B (en) * | 2008-12-09 | 2011-01-05 | 江苏大学 | Fine dried noodle bending and breaking rate measuring method and determinator based on axial compression amount |
| CN102607840B (en) * | 2012-03-31 | 2015-06-10 | 中国矿业大学(北京) | Large deformation tensile force testing system |
| CN103267672B (en) * | 2013-05-13 | 2015-01-14 | 北方工业大学 | Bending prevention system and method for tension compression circulation and loading experiment of double-shaft sheet |
| CN103954502A (en) * | 2014-04-25 | 2014-07-30 | 哈尔滨飞机工业集团有限责任公司 | Fatigue test loading mechanism with tensile pressing cushion |
| CN104198278A (en) * | 2014-09-01 | 2014-12-10 | 北京航空航天大学 | Anti-instability clamp for measuring compression performance of composite laminated board with central notch |
| CN104198277A (en) * | 2014-09-01 | 2014-12-10 | 北京航空航天大学 | Anti-instability clamp for determining compression performance of edge-notch-containing composite-material laminated board |
| CN104155182A (en) * | 2014-09-01 | 2014-11-19 | 北京航空航天大学 | Instability preventing fixture for compression crack growth of metal sheet M(T) test sample |
| 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 |
| CN106840853B (en) * | 2017-03-16 | 2020-07-17 | 四川大学 | Experimental device for be used for panel axial compression test |
| CN108195679B (en) * | 2018-02-11 | 2020-09-29 | 东南大学 | Device for measuring tensile strength of wire rod micro sample and test method |
| CN111766162B (en) * | 2020-07-07 | 2023-04-14 | 鞍钢股份有限公司 | Automobile sheet strain fatigue test device and method |
-
2004
- 2004-11-23 CN CNB2004100813003A patent/CN100485353C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1779433A (en) | 2006-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100485353C (en) | Curling preventor of axial compression fatigue experiment | |
| GB1514131A (en) | Apparatus for and a method of testing material strength | |
| WO2002040191A3 (en) | Device and method for calibrating a multiple-roller flattener | |
| CN112098192A (en) | Clamp and method for testing tensile shear creep of adhesive by cross method | |
| CN101963562B (en) | New transposition wire rigidity test device | |
| CN209858334U (en) | Dull and stereotyped fatigue test sample buckling restrained clamping device with antiskid function | |
| CN106133492A (en) | The pre-tightening apparatus of device for measuring force | |
| WO2002009216A3 (en) | Method and apparatus for measuring displacement of a fuel cell stack during assembly | |
| CN206920262U (en) | A kind of thin plate low cycle fatigue test device | |
| CN201828460U (en) | Novel transposed wire rigid test device | |
| CN110514513A (en) | One kind is for resistant to bending mold and application method in plate-shape metal compression experiment | |
| WO2015174718A1 (en) | Flat plate-type heat transportation device bending machine | |
| CN110083922A (en) | A method of preventing the failure of steel ellipsoidal head internal pressure buckling | |
| CN205562276U (en) | Developments perforation test device's test piece installation mechanism and test device | |
| Cao et al. | Buckling of sheet metals in contact with tool surfaces | |
| US20040002233A1 (en) | Method of assembling an interconnect device assembly and apparatus therefor | |
| KR20110061848A (en) | Fixing zig for scratch test | |
| US20020083913A1 (en) | Liner mounting structure for measuring piston friction | |
| KR0143494B1 (en) | Measuring apparatus & method for adhesive strength of coating | |
| Sobis et al. | An experimental analysis of the onset of buckling in sheet metal forming | |
| CN217505430U (en) | Compression deformation testing device for rubber material for automobile pipe | |
| CN213258293U (en) | Machining buckling clamp for oil pan | |
| CN214408510U (en) | Cable processing is with anti detection device that buckles | |
| CN217819689U (en) | Composite material panel compression performance test fixture of assembled | |
| CN208342746U (en) | A kind of spring mounting tool, device and external member |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090506 Termination date: 20111123 |