CN104406863A - Three-point bending test device and test method for high-speed tensile test machine - Google Patents
Three-point bending test device and test method for high-speed tensile test machine Download PDFInfo
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- CN104406863A CN104406863A CN201410725143.9A CN201410725143A CN104406863A CN 104406863 A CN104406863 A CN 104406863A CN 201410725143 A CN201410725143 A CN 201410725143A CN 104406863 A CN104406863 A CN 104406863A
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Abstract
The invention relates to a three-point bending test device for a high-speed tensile test machine. The device comprises a base, two fixing seats which are fixedly arranged on the base and used for placement of test pieces, and a loading head for generating loading force to the test pieces, wherein the two fixing seats are symmetrically arranged on the two opposite sides of the loading head. The device is characterized in that two through holes are formed in each of the two fixing seats, a through hole is formed in the loading head, the test pieces penetrate through the through holes, and two ends of each test piece are respectively fixed in the through holes. The three-point bending test device disclosed by the invention can realize the dynamic three-point bending loading through the high-speed tensile test machine directly, and the operation is simple.
Description
Technical field
The invention belongs to material mechanical performance dynamic test and representational field, for the industry such as automobile, aviation, have and relate to a kind of three point bending test device for high speed tensile test machine and test method.
Background technology
Three point bending test is one of basic skills of mechanical property of materials test, is mainly used in the bending strength measuring fragility and inductile material, also can measures material surface quality simultaneously.And dynamically three point bending test is a kind of test method of measured material test specimen being carried out to dynamic load, the method is used to obtain the data such as power, displacement of material under the effect of different rates load, for verifying the reliability of material model.Because relevant test method is immature, the anxious high speed three point bending test data lacking material of industry, this directly constrains the precision of mechanical property emulation of automotive material under impact load effect and the development progress of automobile new product.Therefore, it is very necessary for obtaining the dynamic mechanical of lightweighting materials under three-point bending state by research technique.
Three point bending test device of the prior art comprises base, be fixedly installed on base for supporting two supporting seats of test test specimen and being positioned at above supporting seat and pressure head for producing loading force to test specimen, two supporting seats are arranged on relative two sides of pressure head.During test, be placed at the two ends of test specimen on two supporting seats respectively, pressure head produces downward acting force by test specimen downward bending to pressing down to test specimen to test specimen, carries out the bending test of test specimen.As by the three point bending test device of prior art on electronic universal tester time, low speed (<500mm/min) three point bending test can be realized, cannot realize middle and high speed load; During for drop hammer impact testing machine, although can realize high speed three-point bending load, due to drop hammer by freely falling body realize to test specimen load, there is energy loss in impact process, cause loading speed to change greatly.At present, industry there is no testing standard and the specification of material high speed three-point bending.
Summary of the invention
Technical matters to be solved by this invention overcomes the deficiencies in the prior art, there is provided a kind of three point bending test device for high speed tensile test machine and test method, this three point bending test device can realize dynamic three point bending test and can realize constant speed loading.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of three point bending test device for high speed tensile test machine, comprise base, be fixedly installed on described base for placing two holders of test specimen and the loading head for producing loading force to described test specimen, two described holders are symmetricly set on relative two sides of described loading head, two described holders offer respectively two through holes, described loading head offers through hole, and described test specimen passes described through hole and the two ends of described test specimen are separately fixed in described through hole.
Each described holder comprises the deck that the supporting seat be fixedly installed on described base and the upper end being arranged on described supporting seat are fixedly connected with described supporting seat, described deck in the side of described supporting seat, offer groove, described supporting seat and described groove form described through hole, and the part between described supporting seat and described deck of described test specimen is positioned at described groove.
The groove bottom of described groove is by one end of close described loading head to the acclivitous inclined-plane, one end away from described loading head, and described one end rounding of the close described loading head of described groove bottom makes described test specimen contact with the chamfer site of described deck.
Described supporting seat offer towards the position of corresponding described groove in the side of described deck the escape groove dodging described test specimen, one end of the close described loading head of described escape groove is provided with the support portion for supporting described test specimen.
The upper end rounding of described support portion makes described test specimen contact with the chamfer site of described support portion.
Described supporting seat is connected by the first bolt with between deck, and between described supporting seat and deck, spacing regulates by described first bolt.
Described supporting seat is fixedly connected with by the second screw bolt and nut with described base, described base offers chute, the bearing of trend of described chute is the bearing of trend of the connecting line of the central point of two described supporting seats, one end of described second bolt is arranged through described supporting seat, chute, nut successively, and described second bolt can be slidably arranged in described chute along described chute.Described chute offers 2, and each described supporting seat correspondence arranges a described chute.
The lower wall surface of the hole wall of described through hole is the loading surface described test specimen being produced to loading force, and described loading surface is cambered surface.
Described base is provided with for supporting described loading head and adjustable for height support member.
Another technical approach provided by the invention is: a kind of method using above-mentioned three point bending test device to carry out three point bending test on high speed tensile test machine, comprises
(1) install described three point bending test device: be connected by the lower bare terminal end of the described base of described three point bending test device with described high speed tensile test machine, the upper end of described loading head is connected with the actuator of described high speed tensile test machine;
(2) described test specimen is installed: described test specimen is passed described through hole and is placed in described through hole respectively by the two ends of described test specimen, rotating described first bolt makes the chamfer site of described deck contact with described test specimen to adjust described deck, and the height adjusting described support member makes the loading surface of described loading head contact with described test specimen to adjust described loading head;
(3) test described test specimen: open described high speed tensile test machine, the actuator of described high speed tensile test machine is up moved, and drives described loading head up to move, carries out three point bending test.
Due to the enforcement of above technical scheme, the present invention compared with prior art has following advantages:
Three point bending test device of the present invention is combined with high speed tensile test machine, can realize the dynamic three point bending test under basic, normal, high different rates and can realize constant speed loading, simple to operate.
Three point bending test apparatus structure of the present invention is simple, and low cost of manufacture is safe and reliable.
Accompanying drawing explanation
Fig. 1 is the stereographic map of three point bending test device of the present invention;
Fig. 2 is the front view of three point bending test device of the present invention;
Fig. 3 is the longitudinal sectional view of three point bending test device of the present invention;
Fig. 4 is the stereographic map of the loading head of three point bending test device of the present invention;
Fig. 5 is the front view of the loading head of three point bending test device of the present invention;
Fig. 6 is the stereographic map of the deck of three point bending test device of the present invention;
Fig. 7 is the stereographic map of the supporting seat of three point bending test device of the present invention;
Fig. 8 is the stereographic map of the base of three point bending test device of the present invention;
In figure: 1, base; 2, supporting seat; 3, deck; 4, loading head; 5, test specimen; 6, through hole; 7, loading surface; 8, escape groove; 9, support portion; 10, groove; 11, chute; 12, support member; 13, the first bolt; 14, the second bolt; 15, nut.
Embodiment
Below in conjunction with Figure of description, the present invention is described further:
As shown in accompanying drawing 1 ~ 8, a kind of three point bending test device for high speed tensile test machine, comprise base 1, be fixedly installed on base 1 for placing two holders of test specimen 5 and the loading head 4 for producing loading force to test specimen 5, two holders are symmetricly set on relative two sides of loading head 4, two holders offer respectively two through holes, loading head 4 offers through hole 6, test specimen 5 passes through hole 6 and the two ends of test specimen 5 are separately fixed in through hole.
Each holder comprises the deck 3 that the supporting seat 2 be fixedly installed on base 1 and the upper end being arranged on supporting seat 2 are fixedly connected with supporting seat 2, the side towards supporting seat 2 of deck 3 offers groove 10, supporting seat 2 and groove 10 form through hole, and the part between supporting seat 2 and deck 3 of test specimen 5 is positioned at groove 10.Particularly, the groove bottom of groove 10 is by one end of close loading head 4 to the acclivitous inclined-plane, one end away from loading head 4, and one end rounding of the close loading head 4 of groove bottom makes test specimen 5 contact with the chamfer site of deck 3.
Supporting seat 2 offer towards the position of respective slot 10 in the side of deck 3 escape groove 8 dodging test specimen 5, one end of the close loading head 4 of escape groove 8 is provided with the support portion 9 for supporting test specimen 8.The upper end rounding of support portion 9 makes test specimen 5 contact with the chamfer site of support portion 9.
Be connected by the first bolt 13 between supporting seat 2 with deck 3, the spacing between deck 3 and supporting seat 2 regulates by the first bolt 13.
Supporting seat 2 is fixedly connected with nut 15 by the second bolt 14 with base 1, base 1 offers chute 11, the bearing of trend of chute 11 is the bearing of trend of the connecting line of the central point of two supporting seats 2, one end of the second bolt 14 is arranged through supporting seat 2, chute 11 and nut 15 successively, and the second bolt 14 can be slidably arranged in chute 11 along chute 11.Particularly, chute 11 offers 2, and each supporting seat 2 correspondence arranges a chute 11.
Base 1 is provided with for supporting loading 4 and adjustable for height support member 12.Support member 12 is positioned at immediately below loading head 4, and support member 12 is bolt.
The principle of work of three point bending test device of the present invention:
Before test specimen 5 is tested, three point bending test device installs test specimen 5, then this three point bending test device is arranged on high speed tensile test machine, base 1 is connected with the lower bare terminal end of high speed tensile test machine, the upper end of loading head 4 is connected with the actuator of high speed tensile test machine, base 1 is positioned at immediately below loading head 4 and arranges support member 12.Rotate the first bolt 13 and adjust spacing between deck 3 and supporting seat 2, test specimen 5 is contacted with the chamfer site of deck 3, rotary support member 12 regulates the height of loading head 4, is adjusted to by the height of loading head 4 and loading surface 7 is just contacted with the downside of test specimen 5.
During test, the actuator of high speed tensile test machine pulls loading head 4 up to move, and loading surface 7 pairs of test specimens 5 of through hole 6 produce acting force upwards by test specimen 5 upwards bending, carry out the bending test of test specimen 5.Test specimen 5 is in BENDING PROCESS, the position that test specimen 5 contacts with the chamfer site of deck 3 is limited in the groove 10 of deck 3, can not slide, and the end of test specimen 5 is bent downwardly, in the escape groove 8 entering supporting seat 2 and not do not contact with other positions of supporting seat 2 or miscellaneous part, complete correct three-point bending state.
The invention provides a kind of method using above-mentioned three point bending test device to carry out three point bending test on high speed tensile test machine, the method comprises:
(1) three point bending test device is installed: be connected with the lower bare terminal end of high speed tensile test machine by the base of three point bending test device, the upper end of loading head is connected with the actuator of high speed tensile test machine;
(2) test specimen is installed: test specimen is passed through hole and is placed on respectively in through hole at the two ends of test specimen, rotating the first bolt makes the chamfer site of deck contact with test specimen to adjust deck, and the height of adjustment support member makes the loading surface of loading head contact with test specimen to adjust loading head;
(3) test described test specimen: open high speed tensile test machine, the actuator of high speed tensile test machine is up moved, drive loading head up to move, carry out three point bending test.
Three point bending test device of the present invention has following beneficial effect:
Three point bending test device of the present invention directly realizes dynamic three-point bending by high speed tensile test machine and loads, simple to operate;
Three point bending test device of the present invention is combined with high speed tensile test machine, can realize the dynamic three point bending test under basic, normal, high different rates;
Three point bending test apparatus structure of the present invention is simple, and low cost of manufacture, reliability is high.
Above to invention has been detailed description; its object is to allow the personage being familiar with this art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; the equivalence change that all Spirit Essences according to the present invention are done or modification, all should be encompassed in protection scope of the present invention.
Claims (10)
1. the three point bending test device for high speed tensile test machine, comprise base, be fixedly installed on described base for placing two holders of test specimen and the loading head for producing loading force to described test specimen, two described holders are symmetricly set on relative two sides of described loading head, it is characterized in that: two described holders offer respectively two through holes, described loading head offers through hole, and described test specimen passes described through hole and the two ends of described test specimen are separately fixed in described through hole.
2. the three point bending test device for high speed tensile test machine according to claim 1, it is characterized in that: each described holder comprises the deck that the supporting seat be fixedly installed on described base and the upper end being arranged on described supporting seat are fixedly connected with described supporting seat, described deck in the side of described supporting seat, offer groove, described supporting seat and described groove form described through hole, and the part between described supporting seat and described deck of described test specimen is positioned at described groove.
3. the three point bending test device for high speed tensile test machine according to claim 2, it is characterized in that: the groove bottom of described groove is by one end of close described loading head to the acclivitous inclined-plane, one end away from described loading head, and described one end rounding of the close described loading head of described groove bottom makes described test specimen contact with the chamfer site of described deck.
4. the three point bending test device for high speed tensile test machine according to claim 2, it is characterized in that: described supporting seat offer towards the position of corresponding described groove in the side of described deck the escape groove dodging described test specimen, one end of the close described loading head of described escape groove is provided with the support portion for supporting described test specimen.
5. the three point bending test device for high speed tensile test machine according to claim 4, is characterized in that: the upper end rounding of described support portion makes described test specimen contact with the chamfer site of described support portion.
6. the three point bending test device for high speed tensile test machine according to claim 2, is characterized in that: described supporting seat is connected by the first bolt with between deck, and between described supporting seat and deck, spacing regulates by described first bolt.
7. the three point bending test device for high speed tensile test machine according to claim 1, it is characterized in that: described supporting seat is fixedly connected with by the second screw bolt and nut with described base, described base offers chute, the bearing of trend of described chute is the bearing of trend of the connecting line of the central point of two described supporting seats, one end of described second bolt is arranged through described supporting seat, chute, nut successively, and described second bolt can be slidably arranged in described chute along described chute.
8. the three point bending test device for high speed tensile test machine according to claim 1, is characterized in that: the lower wall surface of the hole wall of described through hole is the loading surface described test specimen being produced to loading force, and described loading surface is cambered surface.
9. the three point bending test device for high speed tensile test machine according to claim 1, is characterized in that: described base is provided with for supporting described loading head and adjustable for height support member.
10. use the three point bending test device any one of claim 1 ~ 9 as described in claim on high speed tensile test machine, carry out a method for three point bending test, it is characterized in that: described method comprises
(1) install described three point bending test device: be connected by the lower bare terminal end of the described base of described three point bending test device with described high speed tensile test machine, the upper end of described loading head is connected with the actuator of described high speed tensile test machine;
(2) described test specimen is installed: described test specimen is passed described through hole and is placed in described through hole respectively by the two ends of described test specimen, rotating described first bolt makes the chamfer site of described deck contact with described test specimen to adjust described deck, and the height adjusting described support member makes the loading surface of described loading head contact with described test specimen to adjust described loading head;
(3) test described test specimen: open described high speed tensile test machine, the actuator of described high speed tensile test machine is up moved, and drives described loading head up to move, carries out three point bending test.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410725143.9A CN104406863B (en) | 2014-12-03 | 2014-12-03 | A kind of three point bending test device and test method for high speed tensile test machine |
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| CN201410725143.9A CN104406863B (en) | 2014-12-03 | 2014-12-03 | A kind of three point bending test device and test method for high speed tensile test machine |
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| CN104406863A true CN104406863A (en) | 2015-03-11 |
| CN104406863B CN104406863B (en) | 2017-06-06 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769534A (en) * | 2016-12-29 | 2017-05-31 | 清华大学苏州汽车研究院（相城） | A kind of crash tests dummy neck static flexural test device |
| CN106950107A (en) * | 2017-03-30 | 2017-07-14 | 南京航空航天大学 | A kind of three-point bending fatigue experimental device |
| CN107462406A (en) * | 2016-06-02 | 2017-12-12 | 北京航空航天大学 | The fixture of mechanical-moulded load test |
| CN108519286A (en) * | 2018-04-27 | 2018-09-11 | 中国信息通信研究院 | A kind of load test equipment and test method for chute |
| CN109142087A (en) * | 2018-07-02 | 2019-01-04 | 上海交通大学 | Texture evolution home position observation experimental provision, system and application method |
| CN109269890A (en) * | 2018-10-23 | 2019-01-25 | 北京金隅砂浆有限公司 | A kind of outer heat preservation system float coat crack resistance (flexibility) test method |
| CN109649682A (en) * | 2018-10-31 | 2019-04-19 | 中国飞机强度研究所 | A kind of 3 points of wingbar curved Buckling Fatigue Testing fixtures |
| CN111077026A (en) * | 2019-12-30 | 2020-04-28 | 黄山学院 | Testing device for detecting bending performance of material and using method thereof |
| CN111089802A (en) * | 2020-01-07 | 2020-05-01 | 陈鑫淑 | Electric power fitting test accessory |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4730498A (en) * | 1987-06-01 | 1988-03-15 | Rheometrics, Inc. | Fixture for holding a bending test specimen |
| CN102494943A (en) * | 2011-10-25 | 2012-06-13 | 西安交通大学 | Adjustable test fixture |
| CN203083893U (en) * | 2013-02-27 | 2013-07-24 | 中联重科股份有限公司 | Plate test piece bending testing device |
| CN103616299A (en) * | 2013-12-12 | 2014-03-05 | 山东大学 | Test piece and method for testing fracture toughness of hybrid mode of double-material interface |
| CN103940679A (en) * | 2014-04-17 | 2014-07-23 | 南京航空航天大学 | Three-point externally extending bending creep parameter measurement device and operating method thereof |
| CN104075952A (en) * | 2014-06-05 | 2014-10-01 | 合肥通用机械研究院 | Three-point bending test system based on dynamic fracture toughness of test material |
| CN204228538U (en) * | 2014-12-03 | 2015-03-25 | 清华大学苏州汽车研究院（相城） | A kind of three point bending test device for high speed tensile test machine |
-
2014
- 2014-12-03 CN CN201410725143.9A patent/CN104406863B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4730498A (en) * | 1987-06-01 | 1988-03-15 | Rheometrics, Inc. | Fixture for holding a bending test specimen |
| CN102494943A (en) * | 2011-10-25 | 2012-06-13 | 西安交通大学 | Adjustable test fixture |
| CN203083893U (en) * | 2013-02-27 | 2013-07-24 | 中联重科股份有限公司 | Plate test piece bending testing device |
| CN103616299A (en) * | 2013-12-12 | 2014-03-05 | 山东大学 | Test piece and method for testing fracture toughness of hybrid mode of double-material interface |
| CN103940679A (en) * | 2014-04-17 | 2014-07-23 | 南京航空航天大学 | Three-point externally extending bending creep parameter measurement device and operating method thereof |
| CN104075952A (en) * | 2014-06-05 | 2014-10-01 | 合肥通用机械研究院 | Three-point bending test system based on dynamic fracture toughness of test material |
| CN204228538U (en) * | 2014-12-03 | 2015-03-25 | 清华大学苏州汽车研究院（相城） | A kind of three point bending test device for high speed tensile test machine |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462406A (en) * | 2016-06-02 | 2017-12-12 | 北京航空航天大学 | The fixture of mechanical-moulded load test |
| CN106769534A (en) * | 2016-12-29 | 2017-05-31 | 清华大学苏州汽车研究院（相城） | A kind of crash tests dummy neck static flexural test device |
| CN106950107A (en) * | 2017-03-30 | 2017-07-14 | 南京航空航天大学 | A kind of three-point bending fatigue experimental device |
| CN106950107B (en) * | 2017-03-30 | 2023-09-29 | 南京航空航天大学 | Three-point bending fatigue test device |
| CN108519286A (en) * | 2018-04-27 | 2018-09-11 | 中国信息通信研究院 | A kind of load test equipment and test method for chute |
| CN109142087A (en) * | 2018-07-02 | 2019-01-04 | 上海交通大学 | Texture evolution home position observation experimental provision, system and application method |
| CN109269890A (en) * | 2018-10-23 | 2019-01-25 | 北京金隅砂浆有限公司 | A kind of outer heat preservation system float coat crack resistance (flexibility) test method |
| CN109269890B (en) * | 2018-10-23 | 2023-08-04 | 北京金隅砂浆有限公司 | Method for testing crack resistance of plastering layer of external heat insulation system |
| CN109649682A (en) * | 2018-10-31 | 2019-04-19 | 中国飞机强度研究所 | A kind of 3 points of wingbar curved Buckling Fatigue Testing fixtures |
| CN109649682B (en) * | 2018-10-31 | 2022-08-09 | 中国飞机强度研究所 | Three-point bending and buckling fatigue test fixture for wing beam |
| CN111077026A (en) * | 2019-12-30 | 2020-04-28 | 黄山学院 | Testing device for detecting bending performance of material and using method thereof |
| CN111089802A (en) * | 2020-01-07 | 2020-05-01 | 陈鑫淑 | Electric power fitting test accessory |
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