CN2284391Y - Tension performance auxiliary energy absorption device for normal material tester - Google Patents
Tension performance auxiliary energy absorption device for normal material tester Download PDFInfo
- Publication number
- CN2284391Y CN2284391Y CN 97209222 CN97209222U CN2284391Y CN 2284391 Y CN2284391 Y CN 2284391Y CN 97209222 CN97209222 CN 97209222 CN 97209222 U CN97209222 U CN 97209222U CN 2284391 Y CN2284391 Y CN 2284391Y
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- CN
- China
- Prior art keywords
- ball pivot
- sleeve
- test specimen
- spherical hinge
- energy absorption
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- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model belongs to the technical field material testing machines, particularly a tension performance auxiliary energy absorption device for normal material testers. The device is composed of an upper spherical hinge, a middle spherical hinge, a lower spherical hinge, and draw rods thereof. A thin wall metal sleeve is arranged between the middle spherical hinge and the lower spherical hinge. A test piece is positioned in the middle section of the metal sleeve and is bonded with two shim plates to form an integral combined action. The utility model can homogeneously and effectively absorb elastic deformation energy which is released by a tester in the process of being tensioned, and can completely test out an overall damaged process of a test piece. The utility model has the advantages of simple structure, easy operation and low cost, and can be used for testing and researching the performances of various materials.
Description
The utility model belongs to the Material Testing Machine technical field, particularly the auxiliary energy absorption device of common material testing machine examining tensile behavior.
For some typical brittleness material,, when measuring the examining tensile behavior of its material, often relate to the mensuration of the stress one strain overall process curve in the tension process as concrete, building stones etc.And on the common material testing machine, test specimen is directly carried out axial tension when test, because the insufficient rigidity of testing machine itself, in to the test specimen loading procedure, testing machine has accumulated much larger than the absorbent energy of test specimen because of elastic deformation takes place, after test specimen surpasses maximum load capacity, testing machine discharges an elastic deformation energy immediately because test specimen bearing capacity ability reduces, and test specimen has been applied additional strain and made the hurried broken ring of test specimen.Because actual energy dispose procedure is extremely short, the destructive process of test specimen is also just finishing in a flash, therefore is difficult to draw or record the overall process that test specimen destroys.Obviously, along with the raising of the strength of materials, its fragility can be more obvious, and its destructive process is just more difficult seizure also; And meanwhile,, also often cause impact vibration to its fuselage in the moment that testing machine is released energy.
The implosion test machine has overcome the shortcoming of common material testing machine insufficient rigidity to a great extent, but involves great expense, and manufacturing and configuration are also very difficult; Though MTS closed loop electro-hydraulic servo testing machine can record stress one strain full curve by the control of power or displacement, does not have general applicability, operation also needs certain skill.Therefore, on the conventional test machine research and utilize various auxiliary energy absorption devices to become the important channel of dealing with problems.At present, abroad have attempt to utilize to add the rigidity piece at the bottom active box and measure with the method that increases testing machine rigidity and be subjected to tension one strain full curve, but require the strength of materials of test specimen not high, and test effect is also not really desirable; Domestic " building structure journal " (1988, No.4, the P45-53 page or leaf) discloses to console in " concrete is subjected to the experimental study of tension one strain full curve " literary composition and added the auxiliary energy absorption device that rigid frame is formed, but off-centre easily takes place in the axial tension process, servicing unit is difficult for evenly stressed, and is therefore very big to the test findings influence; The ring specimen of the outer double-deck steel lining of interior oil pressure is surveyed hoop and is subjected to tension one strain full curve at magazine " industrial building " (1993, " cement mortar and the experimental study of concrete hoop tension overall process curve " literary composition of No.2.P31～P36) discloses, but the material of test specimen selects to have certain limitation, and be difficult for and the standard specimen conversion, device is also comparatively complicated.
The utility model is exactly a kind of auxiliary energy absorption device of common material testing machine tension that adopts thin-walled metal sleeve and ball pivot centering of developing at above-mentioned situation.
The utility model is mainly by ball pivot, middle ball pivot, following ball pivot and pull bar thereof are formed, be connected by the pull bar that has pulling force sensor between last ball pivot and the middle ball pivot and between middle ball pivot and following ball pivot, a thin-walled metal sleeve be set, the opening diameter at its both ends is greater than the middle part internal diameter, and be provided with internal thread at both ends, be connected with following ball pivot with last ball pivot respectively, between the upper end of last ball pivot and sleeve, be provided with the upper padding plate of a T shape for bonding test specimen, the upper width of its T shape backing plate 6 is greater than the internal diameter in sleeve stage casing 1, less than sleeve 7 upper end internal diameters, between the bottom of following ball pivot and sleeve, be provided with the lower bolster of the sticking test specimen of holder, lower bolster is carried out with the bottom of sleeve and is threaded, during test test specimen placed the sleeve stage casing, then test specimen just constitutes whole with thin-walled metal sleeve, it is stressed jointly to load back test specimen and thin-walled portion, has identical distortion, after test specimen enters descending branch above maximum load capacity; thin-walled portion is shared bigger load; the deformation energy that the absorption test machine discharges; reduce the additional strain of testing machine, avoid the hurried destruction of test specimen to test specimen.The wall thickness of thin-walled portion considers that mainly the power that both shared is more or less the same under the condition of loading procedure middle sleeve stage casing and the common distortion of test specimen, to reduce test error.
The strain of test specimen can be recorded by the displacement transducer that sticks on the strain ga(u)ge on the metal sleeve stage casing or be installed on the sleeve stage casing, and it more approaches the mean strain of test specimen full-height.Load is born jointly by test specimen and metal sleeve, and total load (TL) is recorded by pulling force sensor.Load in the process of the test and strain by dynamic strain indicator by X-Y function recording instrument record.
Assist energy absorption device according to the common material testing machine that the utility model is made, the elastic deformation energy that can not only be evenly discharged in the absorption test machine tension process effectively, reduce axle and be pulled through influence eccentric in the journey, intactly test out the overall process that test specimen destroys, and it is simple in structure, easy to operate, low price, be convenient to implement, can be configured in very easily on the various tension and compression Material Testing Machine, and can be applicable to multiple material and (comprise high-strength concrete, rock material etc.) performance test and research especially are subjected to for what measure reflection material damage overall process that tension---strain full curve has very high practical value.
Accompanying drawing 1 is a structural representation of the present utility model.
The utility model is described in further detail below in conjunction with accompanying drawing.
The utility model as shown in Figure 1, in whole device, be provided with three sections ball pivots, ball pivot is a centralising device, can adjust the small off-centre in the axial tension process, last ball pivot 3 is installed on the testing machine upper grip by upper connecting rod 2, middle ball pivot 5 and 10 of following ball pivots are arranged symmetrically in thin-walled metal sleeve 7 two ends, are connected with bush whorl, and transmission and office are to regulating testing machine institute externally applied forces.Pull bar mainly plays transmission and is connected effect, last extension bar 2 and lower link 11 transmit the pulling force that testing machine applied by the upper and lower stretching chuck 1,12 of testing machine, cylinder lever connecting rod 13 by with being connected of last ball pivot 3 and pulling force sensor 4, the power on top can be transmitted downwards, middle 14 on pull bar is connected with pulling force sensor 4 with middle ball pivot 5 respectively, makes whole device can measure and transmit the testing machine applied force effectively.During test, test specimen 13 is placed the sleeve stage casing, the upper end is bonding with the upper padding plate 6 that scribbles adhesive, and the lower end is bonding with the lower bolster 9 that is threaded on the end barrel, and then test specimen number and thin-walled metal sleeve 7 constitute integral body, acting in conjunction.In the displacement deformation amount of installation position displacement sensor 8 between sleeve 7 two ends in order to the measurement test specimen.
Claims (1)
1. a common material testing machine examining tensile behavior is assisted energy absorption device, by last ball pivot, middle ball pivot, following ball pivot and pull bar thereof are formed, be connected by the middle pull bar 14 that has pulling force sensor between last ball pivot and the middle ball pivot, it is characterized in that: between middle ball pivot 5 and following ball pivot 10, a thin-walled metal sleeve 7 is set, the opening diameter at its both ends is greater than the middle part internal diameter, and the spiral shell hinge is connected with following ball pivot 10 with last ball pivot 5 respectively in both ends are provided with, between the upper end of last ball pivot 5 and sleeve 7, be provided with the upper padding plate 6 of a T shape for bonding test specimen 5, the upper width of its T shape backing plate 6 is greater than the internal diameter in sleeve stage casing 7, less than sleeve upper end internal diameter, be provided with the lower bolster 9 of the sticking test specimen of holder between the bottom of following ball pivot 10 and sleeve 7, lower bolster 9 is carried out with the bottom of sleeve 7 and is threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97209222 CN2284391Y (en) | 1997-01-08 | 1997-01-08 | Tension performance auxiliary energy absorption device for normal material tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97209222 CN2284391Y (en) | 1997-01-08 | 1997-01-08 | Tension performance auxiliary energy absorption device for normal material tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2284391Y true CN2284391Y (en) | 1998-06-17 |
Family
ID=33928470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97209222 Expired - Fee Related CN2284391Y (en) | 1997-01-08 | 1997-01-08 | Tension performance auxiliary energy absorption device for normal material tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2284391Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100580416C (en) * | 2007-11-30 | 2010-01-13 | 山东大学 | Brittle material test member felted axis pulling experiment positioning apparatus |
| CN100592200C (en) * | 2006-05-19 | 2010-02-24 | 鸿富锦精密工业（深圳）有限公司 | Method and apparatus for inspecting optical filter adhesion in lens mould set |
| CN103487317A (en) * | 2013-09-13 | 2014-01-01 | 大连理工大学 | Method for designing pulling and pressing loading head in concrete multiaxial test |
| CN107389451A (en) * | 2017-08-30 | 2017-11-24 | 广州大学 | A kind of bitumastic tension test platform for eliminating eccentric bending moment and its test method |
| CN108225895A (en) * | 2018-01-30 | 2018-06-29 | 东南大学 | A kind of uniaxial rigidity stretched is with drawing device |
| CN108896388A (en) * | 2018-07-04 | 2018-11-27 | 福州大学 | A kind of power-pulse current coupling laboratory holder |
-
1997
- 1997-01-08 CN CN 97209222 patent/CN2284391Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100592200C (en) * | 2006-05-19 | 2010-02-24 | 鸿富锦精密工业（深圳）有限公司 | Method and apparatus for inspecting optical filter adhesion in lens mould set |
| CN100580416C (en) * | 2007-11-30 | 2010-01-13 | 山东大学 | Brittle material test member felted axis pulling experiment positioning apparatus |
| CN103487317A (en) * | 2013-09-13 | 2014-01-01 | 大连理工大学 | Method for designing pulling and pressing loading head in concrete multiaxial test |
| CN103487317B (en) * | 2013-09-13 | 2015-07-15 | 大连理工大学 | Method for designing pulling and pressing loading head in concrete multiaxial test |
| CN107389451A (en) * | 2017-08-30 | 2017-11-24 | 广州大学 | A kind of bitumastic tension test platform for eliminating eccentric bending moment and its test method |
| CN108225895A (en) * | 2018-01-30 | 2018-06-29 | 东南大学 | A kind of uniaxial rigidity stretched is with drawing device |
| CN108225895B (en) * | 2018-01-30 | 2020-04-24 | 东南大学 | Uniaxial tension rigid accompanying device |
| CN108896388A (en) * | 2018-07-04 | 2018-11-27 | 福州大学 | A kind of power-pulse current coupling laboratory holder |
| CN108896388B (en) * | 2018-07-04 | 2024-03-12 | 福州大学 | Force-pulse current coupling action experimental clamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |