CN2779380Y - Tensile shear and compressive shear compound load test apparatus - Google Patents
Tensile shear and compressive shear compound load test apparatus Download PDFInfo
- Publication number
- CN2779380Y CN2779380Y CN 200520070574 CN200520070574U CN2779380Y CN 2779380 Y CN2779380 Y CN 2779380Y CN 200520070574 CN200520070574 CN 200520070574 CN 200520070574 U CN200520070574 U CN 200520070574U CN 2779380 Y CN2779380 Y CN 2779380Y
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- 238000012360 testing method Methods 0.000 title abstract description 52
- 150000001875 compounds Chemical class 0.000 title abstract description 16
- 238000010008 shearing Methods 0.000 claims abstract description 33
- 230000006835 compression Effects 0.000 claims abstract description 26
- 238000007906 compression Methods 0.000 claims abstract description 26
- 239000002131 composite material Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005520 cutting process Methods 0.000 description 7
- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000011157 advanced composite material Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000002153 concerted effect Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model relates to a tensile shear and compressive shear compound loading test apparatus which is a structural mechanics test apparatus comprising that four shearing, tension and compression loading clamping boards (6) (9) are connected with a rectangle loading frame; two L-shaped levers (1) are symmetrically and separately connected and are arranged on a diagonal line of the outer side of the rectangle loading frame via a hinging (5), and loading bores (2, 3, 4 and 2 ', 3 ', 4 ') respectively tensibly shear loading bores (7, 10, 11 and 7', 10'11) respectively and compressively shear the L-shaped lever. The test apparatus can implement the tensile shear and compressive shear compound load tests, the tensile shear and compressive shear compound load tests with different proportions, the tensile shear and compressive shear stability and strength compound load tests with different proportions and the pure shear stability and strength loading tests on the same suit of test apparatus of the common test machine. The test apparatus has compact structure, convenient operation and low manufacturing cost, and is especially suitable for testing the structure stability and strength of the volume test pieces of the composite material.
Description
Technical field
Tensile-shear compressive-shear complex loading tester of the present utility model belongs to the structural experiment mechanics field.
Background technology
In Aeronautics and Astronautics, navigation engineering structure, dull and stereotyped and stiffened panel is typical primary structure member, they all are in unilateral stretching, compression and shearing compound stress, and this class A of geometric unitA to cut, press the stability of cutting under the composite force and intensity be important subject in the structural mechanics drawing.Particularly in the contemporary aircraft design, must study the strength problems of thin-wall construction under complex load such as covering, press for and in the laboratory, realize this loaded-up condition, examine the intensity of material, set up for next step theory and prepare.
For a long time, realize drawing for this class A of geometric unitA and cut, press that to cut compound loading be very difficult.Can adopt hyperchannel harmony loading system or multiaxis testing machine and auxiliary clamp to realize at present, but because these equipment price costlinesses also have certain degree of difficulty in the implementation procedure in addition, so seldom adopt.
Also having a kind of method is to realize that by bending drawing of plate cut and press scissor test by the box section be made up of plate and rib, but this method is applicable to the stability test of plate, and in strength test, experimentation cost is higher, and can not reach satisfied effect.
Existing a kind of pressure is cut the compound loading device, and the composite force test that can only realize compressing and shear can not realize stretching and shears the composite force test, and test effect is not good, especially for the small size test specimen.Be not suitable for strength test yet.As pressing the ratio of cutting to change, then to change anchor clamps simultaneously, the installation specification height, use is inconvenient, and manufacturing cost is also very high.
Adopt above-mentioned several method on same set of test unit, realize that simultaneously drawing of different proportion cut and pressed scissor test is very difficult.
The utility model content
The purpose of this utility model is, providing a kind of can realize drawing and cut, press and cut the compound loading test on the same set of test unit on the conventional test machine, realizes that drawing of different proportion cut, press and cut the compound loading test; The stability and the intensity load test of cutting stability and the test of intensity compound loading and realizing pure shear are cut, are pressed in drawing of different proportion.
Drawing of above-mentioned purpose of realization cut, pressure is cut the compound loading test unit, comprise by four shearings and tension and compression and load clamping plate, connect into a rectangular loading frame, on the diagonal line that places the rectangular loading frame outside of two identical L shaped lever symmetries, promptly vertical quarter butt end of two L shaped levers is connected in two shearings of two opposite side and the mid point that tension and compression load clamping plate by the sheet that is articulated and connected respectively, the mid point of the horizontal stock of two L shaped levers is connected in two shearings in addition on other two teams limit and the mid point of tension and compression loading clamping plate by hinged slotting ear respectively, on the vertical quarter butt of L shaped lever, have to draw to cut and load the hole, load the hole and on L shaped lever cross stock, have to press to cut, be articulated and connected sheet and shearing and tension and compression load the clamping plate part that is connected and have a pressure to load the hole, L shaped lever inboard with the rectangular loading frame outside between the diagonal line at two exterior angles of loading frame on also respectively have the shearing of a symmetry to load the hole, the non-loading hole of a symmetry is respectively arranged on another diagonal line at other two exterior angles of rectangular loading frame.
This test unit has solved to draw in the structural mechanics and has cut, and presses and to cut the technical barrier of compound loading, for stability of structure and intensity research provide a kind of simple and easy to do test method.Solved on the conventional test machine, used the test battery device, realized that drawing of dull and stereotyped and stiffened panel different proportion cut and pressure is cut the compound loading test, also can realize the pure shear test.And this test unit compact conformation, easy to use, low cost of manufacture is very suitable for the test of the testpieces in enormous quantities of composite structure stability and intensity.
Description of drawings
Fig. 1 is the structural representation of tensile-shear compressive-shear complex loading tester.
Fig. 2～Fig. 4 is the fundamental diagram of tensile-shear compressive-shear complex loading tester.
Label title among Fig. 1:
1-L shape lever,
2,3,4 and 2 ', 3 ', 4 '-La cuts and loads the hole,
The 5-sheet that is articulated and connected,
6-shears with tension and compression and loads clamping plate,
7,10,11 and 7 ', 10 ', 11 '-press to cut to load the hole,
The 8-testpieces,
9-shears with tension and compression and loads clamping plate,
The 12-shearing loads the hole,
The 13-tension and compression load the hole,
The non-loading of 14-hole,
The hinged slotting ear of 15-.
Designation among Fig. 2～Fig. 4: P
τBe shearing, P
LYBe rectangle one opposite side pulling force, P
JBe a diagonal angle pulling force of rectangle, P axially makes a concerted effort.
Embodiment:
As seen from the figure, Ben La cuts to press to cut to be added with and carries test unit, load clamping plate 6 and 9 by four shearings and tension and compression and connect into a rectangular loading frame, two L shaped levers 1 are placed on the diagonal line in the rectangular loading frame outside symmetrically, the vertical quarter butt end that is L shaped lever 1 is connected in two shearings of two opposite side and the midpoint that tension and compression load clamping plate 6 by the sheet 5 that is articulated and connected respectively, and the mid point of the horizontal stock of L shaped lever 1 is connected in two shearings in addition of two opposite side in addition and the mid point of tension and compression loading clamping plate 9 by hinged slotting ear 15 respectively.When the single axial pulling force was added on this a pair of hinged slotting ear 15, test unit can the automatic centering heart under loading.Have respectively on two vertical quarter butts of L shaped lever to draw to cut and load hole 2,3,4 and 2 ', 3 ', 4 ', three are drawn to cut and load hole 2,3,4 (2 ', drawing 3 ', 4 ') cut than being respectively 1: 1, and 1: 2,2: 1, have respectively on two L shaped lever cross stocks to press to cut and load hole 7,10,11 and 7 ', 10 ', 11 ', three pressures are cut and are loaded hole 7,10,11 (7 ', 10 ', 11 ') pressure is cut than being 1: 1, and 1: 2,2: 1.Be articulated and connected sheet 5 with shear tension and compression and load clamping plate 6 part that links to each other a pressure-loaded hole 13 is arranged, on a pair of diagonal line at rectangular loading frame two diagonal angles between L shaped lever 1 inboard and the rectangular loading frame outside, also have the shearing of a symmetry to load hole 12, rectangular loading frame is the last non-loading hole 14 that a symmetry is arranged of another diagonal line at two exterior angles in addition.This loads hole 14 any web member is not installed, can Free Transform under the effect of pressure with warranty test spare.On four shearings and tension and compression load clamping plate 6 and 9 medial surface, add gear hobbing, increase friction force between testpieces and shearing and the tension and compression loading clamping plate, the transmission of assurance shearing with this.
Ultimate principle of the present utility model is to utilize lever principle, the single axial pulling force that testing machine is applied resolves into pulling force or pressure perpendicular to edges of boards by L shaped lever, with with the coaxial pulling force of plate one diagonal line, this pulling force is realized applying the plate shearing by the load distribution that loads frame, so just realized drawing and cut or pressed the coordinate synchronization loading of cutting combined load, application by lever principle, change the position that loads the hole on the L shaped lever, can change the ratio of cutting or pressing shearing load of drawing, according to Fig. 2, Fig. 3 and Fig. 4 are described in detail the principle of work of this load testing machine:
1. four limits with testpieces 8 link to each other with shearing that loads inboard four limits of frame and tension and compression loading clamping plate, when the loading hole on the L shaped lever is subjected to an axial load, by L shaped lever load is resolved into perpendicular to the pulling force of edges of boards or pressure with to the plate shearing, then make rectangular slab ABCD be subjected to combined load (P
LY+ P
J).
If axially making a concerted effort of testing machine is P, the opposite side pulling force of rectangular slab ABCD is P
LY, the diagonal angle pulling force of rectangular slab ABCD is P
J, P then
JWith the angle α of P (see figure 4) is arranged:
Obtain angle α thus, can obtain loading on the L shaped lever hole and get coordinate points.
2. the component P that distributes by L shaped lever
LY, P
JBe applied to four pairs of shearings and tension and compression and load on the clamping plate, load loading frame realization that clamping plate connect to form by four pairs of shearings and tension and compression and rectangular slab ABCD synchronous coordination is applied to draw cut, press and cut combined load.
As changing the ratio of cutting, pressing shearing load of drawing, then try to achieve angle α by calculating, obtain on the L shaped lever loading the hole and get coordinate points, determine to load on the L shaped lever hole and get the position and get final product.
3. as will change the ratio of cutting, pressing shearing load of drawing, then try to achieve angle α, obtain loading on the L shaped lever hole and get coordinate points, determine to load on the L shaped lever hole and get the position and get final product by calculating.
4. testing machine loads the single axial pulling force, and pulling force is distributed into pulling force P by L shaped lever with this pulling force
LY, P
J, P
LYLoad clamping plate 6 by two pairs of be articulated and connected sheets 5 and shearing and tension and compression and apply a pulling force or pressure, and P
JLoad clamping plate 6 by four pairs of shearings and tension and compression and convert shearing P to
τ, realize drawing of testpieces cut, pressed and cut compound loading.Under the effect of testing machine pulling force, the loading center automatic centering of its anchor clamps.
This test unit has solved to draw in the structural mechanics cuts, presses the technical barrier of cutting compound loading, for stability of structure and intensity research provide a kind of simple and easy to do test method.
Solved on the conventional test machine, use the test battery device, realize that drawing of dull and stereotyped and stiffened panel different proportion cut and pressure is cut the compound loading test, also can realize the pure shear test, and the test unit principle is clear, compact conformation, easy to use, low cost of manufacture, reusable, be very suitable for the test of the testpieces in enormous quantities of advanced composite material (ACM) structural stability and intensity, have very high engineering using value.
Claims (2)
1. tensile-shear compressive-shear complex loading tester, it is characterized in that, load clamping plate (6) and (9) by four shearings and tension and compression and connect into a rectangular loading frame, two L shaped levers (1) place on ground, the rectangular loading frame outside one diagonal line symmetrically, the vertical quarter butt end that is L shaped lever (1) is connected in two shearings of two opposite side and the midpoint that tension and compression load clamping plate (6) by the sheet that is articulated and connected (5) respectively, the mid point of the horizontal stock of L shaped lever (1) is connected in addition two shearings of another two opposite side and the mid point of tension and compression loading clamping plate (9) by hinged slotting ear (15) respectively, have respectively on the vertical quarter butt of two L shaped levers (1) to draw to cut and load the hole, have respectively on the horizontal stock of two L shaped levers (1) to press to cut and load the hole, the sheet (5) that is articulated and connected loads clamping plate (6) part that links to each other and also has tension and compression to load hole (13) with shearing tension and compression, L shaped lever inboard with rectangular loading frame outside between the diagonal line at two exterior angles of rectangular loading frame on a shearing loading hole (12) is respectively arranged.
2. tensile-shear compressive-shear complex loading tester according to claim 1 is characterized in that, on the medial surface of four shearings and tension and compression loading clamping plate gear hobbing is housed respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520070574 CN2779380Y (en) | 2005-04-11 | 2005-04-11 | Tensile shear and compressive shear compound load test apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520070574 CN2779380Y (en) | 2005-04-11 | 2005-04-11 | Tensile shear and compressive shear compound load test apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN2779380Y true CN2779380Y (en) | 2006-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520070574 Expired - Lifetime CN2779380Y (en) | 2005-04-11 | 2005-04-11 | Tensile shear and compressive shear compound load test apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN2779380Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307414C (en) * | 2005-04-11 | 2007-03-28 | 南京航空航天大学 | Tensile-shear compressive-shear complex loading tester |
| CN103558097A (en) * | 2013-11-15 | 2014-02-05 | 哈尔滨工业大学 | Testing device for tensile-shear coupling experiment in thin film |
| CN105865920A (en) * | 2016-05-09 | 2016-08-17 | 中国工程物理研究院总体工程研究所 | Four-direction equally-loaded stress application device for cellular materials |
| CN106066277A (en) * | 2016-05-24 | 2016-11-02 | 重庆大学 | A kind of rock tensile shear testing device and method that can use on pressure-shear test machine |
| CN106092769A (en) * | 2016-06-02 | 2016-11-09 | 长沙理工大学 | Concrete fatigue test system under a kind of curved scissors stress |
| CN105043901B (en) * | 2015-08-14 | 2018-08-28 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of mechanical connecting structure shearing performance test device and its test method |
-
2005
- 2005-04-11 CN CN 200520070574 patent/CN2779380Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307414C (en) * | 2005-04-11 | 2007-03-28 | 南京航空航天大学 | Tensile-shear compressive-shear complex loading tester |
| CN103558097A (en) * | 2013-11-15 | 2014-02-05 | 哈尔滨工业大学 | Testing device for tensile-shear coupling experiment in thin film |
| CN103558097B (en) * | 2013-11-15 | 2016-01-27 | 哈尔滨工业大学 | Film draws cuts coupling experiment proving installation |
| CN105043901B (en) * | 2015-08-14 | 2018-08-28 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of mechanical connecting structure shearing performance test device and its test method |
| CN105865920A (en) * | 2016-05-09 | 2016-08-17 | 中国工程物理研究院总体工程研究所 | Four-direction equally-loaded stress application device for cellular materials |
| CN106066277A (en) * | 2016-05-24 | 2016-11-02 | 重庆大学 | A kind of rock tensile shear testing device and method that can use on pressure-shear test machine |
| CN106066277B (en) * | 2016-05-24 | 2019-02-05 | 重庆大学 | A kind of rock tensile shear testing device and method that can be used on pressure-shear test machine |
| CN106092769A (en) * | 2016-06-02 | 2016-11-09 | 长沙理工大学 | Concrete fatigue test system under a kind of curved scissors stress |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20050411 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |