CN106525569B - Shearing test piece of high-strength metal material - Google Patents
Shearing test piece of high-strength metal material Download PDFInfo
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- CN106525569B CN106525569B CN201611223891.2A CN201611223891A CN106525569B CN 106525569 B CN106525569 B CN 106525569B CN 201611223891 A CN201611223891 A CN 201611223891A CN 106525569 B CN106525569 B CN 106525569B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a shearing test piece of a high-strength metal material, which comprises a fixed section and a stretching section which are sequentially distributed along the length direction of the test piece, wherein the fixed section and the stretching section are respectively and fixedly connected with a clamping end and a stretching end of a stretching test machine, the test piece also comprises a test section for connecting the fixed section and the stretching section, one end of the fixed section is provided with a containing groove, the other end of the fixed section is fixedly connected with the clamping end of the stretching test machine, one end of the stretching section is positioned in the containing groove, the other end of the stretching section is fixedly connected with the stretching end of the stretching test machine, two sides of the stretching section positioned in the containing groove are symmetrically provided with the test section, and the stretching section is respectively and fixedly connected with the fixed section through the two sides of the test section. The shear test piece provided by the invention has the advantages of simple structure, convenience in test, stable and high shear stress state and reliable result.
Description
Technical Field
The invention relates to the field of mechanical property testing and characterization of materials, is used in the industries of automobiles, aviation and the like, and in particular relates to a shearing test piece of a high-strength metal material.
Background
In the mechanical properties of materials, a shear test is one of important components of performance indexes, and the reliability of the shear test directly influences the properties of the materials such as shear modulus, shear stress strain, shear failure and the like. The ideal shear test data can be obtained by twisting round bars, but the method is complex, is not applicable to flat plate materials, and is difficult to apply to dynamic tests. The shearing state stability of a plate shearing test piece adopted by the existing high-strength metal in the test process is poor, the relatively stable shearing stress state is difficult to maintain, large errors occur in the mechanical characterization of the high-strength material, particularly in the fracture characterization of the material, and the result reliability is low.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing an improved shearing test piece of a high-strength metal material.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a high strength metal material's shearing test piece, includes the edge the fixed section and the tensile section that distribute in proper order of length direction of test piece, fixed section and tensile section are used for respectively with tensile testing machine's clamping end and tensile end fixed connection, the test piece is still including being used for connecting fixed section and tensile section's test section, the one end of fixed section be equipped with hold the recess, the other end be used for with tensile testing machine's clamping end fixed connection, tensile section's one end be located hold the recess, the other end be used for with tensile testing machine's tensile end fixed connection, be located hold the recess the bilateral symmetry of tensile section is equipped with test section just tensile section is respectively through the both sides test section with fixed section fixed connection.
Further, both sides of the stretching section provided with the test section are respectively parallel to the groove walls of the accommodating grooves at the respective corresponding sides.
Furthermore, the distance between the two sides of the stretching section provided with the test section and the groove walls of the accommodating grooves on the corresponding sides is 0.5 mm-2 mm.
Further, the end face of the one end of the fixed section is parallel to both side faces of the test section.
Further, the length of the test section is 2 mm-10 mm.
Further, the thickness of the test piece is 0.5 mm-2 mm.
Further, the test piece is a symmetrical piece, and a center line of the test piece, which is consistent with the length direction of the test piece in the extending direction, is used as a symmetrical axis.
Further, the test piece is an integrally formed plate member.
Further, the accommodating groove comprises a rectangular groove part and a groove opening, the groove part extends to the other end of the fixing section and is gradually smaller than the groove part, the stretching section comprises a rectangular stretching section body with one end located in the groove part and a stretching section extending part formed at one end of the stretching section body and extending to the groove part along the length direction of the stretching section body, and the testing section is respectively arranged at two sides of the stretching section body and is fixedly connected with the groove wall of the groove part at the corresponding side.
Still further, the fixed section includes one end is equipped with the fixed section body of holding groove and forms the other end of fixed section body and follow fixed section extension that the length direction of fixed section body extends, fixed section extension with tensile testing machine's clamping end fixed connection.
Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:
the shear test piece provided by the invention has the advantages of simple structure, convenience in test, stable and high shear stress state and reliable result.
Drawings
Fig. 1 is a schematic structural view of a shear test piece according to the present invention.
FIG. 2 is a finite element simulation analysis result of local shear stress distribution;
FIG. 3 is a graph showing the stress triaxial degree of the test segment extracted from the finite element analysis results with time.
In the figure: 1. a fixed section; 11. a fixed section body; 12. a fixed segment extension; 2. a stretching section; 21. a stretch section body; 22. a stretch section extension; 3. a test section; 4. an accommodating groove; 41. a groove one part; 42. and a groove two part.
Detailed Description
The invention is further described below with reference to the drawings.
As shown in FIG. 1, a shearing test piece of high strength metal material, include the fixed section 1 and the tensile section 2 that distribute in proper order along the length direction of test piece, fixed section 1 and tensile section 2 are used for respectively with tensile test machine's clamping end and tensile end fixed connection, this test piece still includes the test section 3 that is used for connecting fixed section 1 and tensile section 2, the one end of fixed section 1 is equipped with holding groove 4, the other end is used for with tensile test machine's clamping end fixed connection, the one end of tensile section 2 is located holding groove 4, the other end is used for with tensile test machine's tensile end fixed connection, the bilateral symmetry of tensile section 2 that is located holding groove 4 is equipped with this test section 3 and tensile section 2 is respectively through the test section 3 and the fixed section 1 fixed connection of both sides. The test piece is an integrally formed plate piece.
The two sides of the stretching section 2 provided with the test section 3 are respectively parallel to the groove walls of the accommodating grooves 4 at the corresponding sides, and the distance D1 between the two sides of the stretching section 2 provided with the test section 3 and the groove walls of the accommodating grooves 4 at the corresponding sides is 0.5 mm-2 mm, and the distance is the width of the test section 3.
The end face of the fixing section 1, which is provided with one end of the accommodating groove 4, is parallel to the two side faces of the test section 3. The distance D2 from the end face of the end of the fixing section 1 provided with the accommodating groove 4 to the side face of the test section 3 nearest to the end face is 2 mm-10 mm. The length L1 of the test section 3 is 2 mm-10 mm.
The accommodating groove 4 comprises a rectangular groove first part 41 and a groove second part 42 with a notch extending from the groove first part 41 to the other end of the fixed section 1 and gradually becoming smaller, the stretching section 2 comprises a rectangular stretching section body 21 with one end positioned at the groove first part 41 and a stretching section extending part 22 formed at one end of the stretching section body 21 and extending into the groove second part 42 along the length direction of the stretching section body 21, the test sections 3 are respectively arranged at two sides of the stretching section body 21, and the two side test sections 3 are respectively fixedly connected with groove walls of the groove first parts 41 at corresponding sides. In this example, the test section 3 is fixedly connected to the middle of the wall of the groove 41.
The width W1 of the stretching section body 21 is 10 mm-40 mm, and the distance D3 between the stretching section extension 22 and the groove two part 42 is 0.5 mm-10 mm.
Specifically, the fixing section 1 includes a fixing section body 11 having one end provided with the accommodating groove 4, and a fixing section extension portion 12 formed at the other end of the fixing section body 11 and extending in the length direction of the fixing section body 11, the fixing section extension portion 12 being fixedly connected with a clamping end of the tensile testing machine.
The width W2 of the fixed section body 11 is 20 mm-60 mm.
The accommodation groove 4 is provided on the fixed-section body 11 and is provided at a middle position of an end portion of the fixed-section body 11.
In the invention, the thickness of the test piece is 0.5 mm-2 mm.
The test piece is a symmetrical piece, and the center line of the test piece, the extending direction of which is consistent with the length direction of the test piece, is taken as a symmetrical axis.
During testing, the end part of the fixing section 1 and the end part of the stretching section 2 of the test piece are respectively arranged at the clamping end and the stretching end of the stretching testing machine, the stretching end of the testing machine applies force, and the testing section 3 of the test piece achieves a shearing stress state.
The present example specifically provides a test piece having a thickness of 1mm, a w1 of 30mm, a w2 of 46mm, a d1 of 1mm, a d2 of 4.5mm, a d3 of 1mm, a l1 of 4mm, a total length of 137.5mm, a length of the fixing section extension of 40.5mm, a width of 32mm, and a length of the fixing section body of 49.5mm.
The stress distribution result and the stress triaxial degree change condition of the test section 3 of the test piece of the example are obtained by using a finite element simulation method, fig. 2 is a local shear stress distribution result obtained by finite element simulation analysis, the shear stress distribution of the test section 3 is concentrated, fig. 3 is a change curve of the stress triaxial degree of the test section 3 along with time extracted from a finite element analysis result, and the change of the curve shows that the stress triaxial degree value of the test section 3 is about 0 in the whole test process and is close to an ideal shear stress state.
The present invention has been described in detail with the purpose of enabling those skilled in the art to understand and practice the present invention, but not to limit the scope of the present invention, and the present invention is not limited to the above-described embodiments, and all equivalent changes or modifications according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (9)
1. The utility model provides a high strength metal material's shearing test piece, includes the edge the fixed section and the tensile section that distribute in proper order of length direction of test piece, fixed section and tensile section are used for respectively with tensile testing machine's clamping end and tensile end fixed connection, the test piece is still including being used for connecting the test section of fixed section and tensile section, its characterized in that: one end of the fixing section is provided with an accommodating groove, the other end of the fixing section is fixedly connected with a clamping end of the tensile testing machine, one end of the tensile section is positioned in the accommodating groove, the other end of the tensile section is fixedly connected with a tensile end of the tensile testing machine, two sides of the tensile section positioned in the accommodating groove are symmetrically provided with the test section, and the tensile section is fixedly connected with the fixing section through the test sections at two sides respectively;
the accommodating groove comprises a rectangular groove part and a groove opening, the groove part extends to the other end of the fixing section and gradually becomes smaller than the groove part, the stretching section comprises a rectangular stretching section body with one end located in the groove part and a stretching section extending part formed at one end of the stretching section body and extending to the groove part along the length direction of the stretching section body, and the testing section is respectively arranged at two sides of the stretching section body and at two sides of the testing section and is respectively fixedly connected with the groove wall of the groove part at the corresponding side.
2. The shear test piece of high strength metallic material according to claim 1, wherein: the two sides of the stretching section provided with the test section are respectively parallel to the groove walls of the accommodating grooves at the corresponding sides.
3. The shear test piece of high strength metallic material according to claim 2, wherein: the distance between the two sides of the stretching section provided with the test section and the groove walls of the accommodating grooves on the corresponding sides is 0.5 mm-2 mm.
4. The shear test piece of high strength metallic material according to claim 1, wherein: the end face of one end of the fixing section is parallel to the two side faces of the test section.
5. The shear test piece of high strength metallic material according to claim 1, wherein: the length of the test section is 2 mm-10 mm.
6. The shear test piece of high strength metallic material according to claim 1, wherein: the thickness of the test piece is 0.5 mm-2 mm.
7. The shear test piece of high strength metallic material according to claim 1, wherein: the test piece is a symmetrical piece, and a center line of the test piece, which is consistent with the length direction of the test piece in the extending direction, is used as a symmetrical axis.
8. The shear test piece of high strength metallic material according to claim 1, wherein: the test piece is an integrally formed plate.
9. The shear test piece of high strength metallic material according to claim 1, wherein: the fixed section comprises a fixed section body with one end provided with the accommodating groove and a fixed section extension part formed at the other end of the fixed section body and extending along the length direction of the fixed section body, and the fixed section extension part is fixedly connected with the clamping end of the tensile testing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223891.2A CN106525569B (en) | 2016-12-27 | 2016-12-27 | Shearing test piece of high-strength metal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223891.2A CN106525569B (en) | 2016-12-27 | 2016-12-27 | Shearing test piece of high-strength metal material |
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| Publication Number | Publication Date |
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| CN106525569A CN106525569A (en) | 2017-03-22 |
| CN106525569B true CN106525569B (en) | 2023-06-06 |
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| CN201611223891.2A Active CN106525569B (en) | 2016-12-27 | 2016-12-27 | Shearing test piece of high-strength metal material |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612803A (en) * | 2019-01-25 | 2019-04-12 | 中国工程物理研究院总体工程研究所 | It is a kind of for measuring the tensile test specimen of material dynamic performance |
| CN114295436B (en) * | 2021-12-16 | 2023-09-19 | 齐鲁工业大学 | Shear test specimen and breaking strain test method |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE2922142A1 (en) * | 1979-05-31 | 1980-12-04 | Eduard Dipl Ing Vogler | Versatile compact extending ladder - has hinge bar chain and shears piece with chain link, in stringers |
| DE3031873C2 (en) * | 1980-08-23 | 1986-06-19 | Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn | Clamping head for holding threaded specimens in testing machines |
| JPH0231816B2 (en) * | 1983-04-18 | 1990-07-17 | Rikagaku Kenkyusho | ITAMENSENDANTOKUSEINOSOKUTEIHO |
| SU1249386A1 (en) * | 1984-07-10 | 1986-08-07 | Харьковский Ордена Ленина Авиационный Институт Им.Н.Е.Жуковского | Specimen for shear testing |
| JP2000214061A (en) * | 1999-01-28 | 2000-08-04 | Takenaka Komuten Co Ltd | Method and device for shearing test of hard material |
| CN201477012U (en) * | 2009-08-14 | 2010-05-19 | 阳建红 | Clamping apparatus for variable-angle shear test |
| CN101793645B (en) * | 2009-11-27 | 2011-09-14 | 清华大学 | Deformation-compensated high-strength metal sheet shear test block |
| CN102323140B (en) * | 2011-08-11 | 2014-08-20 | 西北工业大学 | Sample and clamp for thin walled tube high temperature tensile test |
| CN103674632A (en) * | 2012-09-12 | 2014-03-26 | 中航惠腾风电设备股份有限公司 | Equipment for precisely producing tensile shear test piece |
| CN103018101A (en) * | 2012-12-20 | 2013-04-03 | 南京航空航天大学 | Clamp for high temperature tensile test of ceramic matrix composite material |
| CN203191255U (en) * | 2013-04-27 | 2013-09-11 | 燕兰 | Axial tensile test harness and matched clamp |
| CN103411839B (en) * | 2013-08-06 | 2016-04-20 | 西北工业大学 | A kind of metal electrification shearing test device and test method |
| CN205593859U (en) * | 2016-04-12 | 2016-09-21 | 江苏科技大学 | Galley proof piece attach fitting shear strength measuring device |
| CN206399728U (en) * | 2016-12-27 | 2017-08-11 | 清华大学苏州汽车研究院（相城） | The shear test block of high-strength metal material |
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