CN106018082A - Method for applying tension load to special-shaped profile sectional material - Google Patents
Method for applying tension load to special-shaped profile sectional material Download PDFInfo
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- CN106018082A CN106018082A CN201610322350.9A CN201610322350A CN106018082A CN 106018082 A CN106018082 A CN 106018082A CN 201610322350 A CN201610322350 A CN 201610322350A CN 106018082 A CN106018082 A CN 106018082A
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- section
- special
- section bar
- shaped
- tensile load
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- 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
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- 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
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
Abstract
The invention relates to a method for applying a tension load to a special-shaped profile sectional material and belongs to the field of airplane structure intensity testing. The method comprises the steps of arranging a tension angle box firstly to be used for accommodating the end of the special-shaped profile sectional material; conducting fixation with low-melting-point alloy, wherein the melting point of the alloy is lower than that of the special-shaped profile sectional material and that of the tension angle box and higher than the highest temperature during tension testing; finally applying the tension load to the tension angle box after the alloy is solidified. By the adoption of the method, tension loads can be applied to various profile sectional materials without additionally designing a butt joint part, the adopted low-melting-point alloy and the designed tension angle box can be repeatedly used, and then test cost is reduced.
Description
Technical field
The invention belongs to aircraft structure strength test field, particularly relate to a kind of special-shaped section section bar and apply to draw
The method stretching load.
Background technology
When carrying out various section section bar or various section section bar docking tensile strength test, the most generally use
Method be that design docking bogusware and tension test part are by stretching dock applying on bogusware after being mechanically connected
Load, but for some section shapes and the section bar of complexity thereof, it is called for short contoured cross section section bar, cause docking
The design of bogusware and complexity thereof, even for the section bar that some sections are less and complex-shaped, it is impossible to by setting
Meter docking bogusware carries out being mechanically connected applying tensile load.
Summary of the invention
In order to solve the problems referred to above, the invention provides a kind of special-shaped section section bar and apply the side of tensile load
Method.Concrete, the method for the invention includes:
S1, arranging stretching angle box, described stretching angle box is provided with an opening surface and tensile load loading end,
When tensile load acts on described tensile load loading end, the line of force of described tensile load is along described opening surface
Center point to the center of described stretching angle box；
S2, the end of described special-shaped section section bar is placed in the box of described stretching angle, and described special-shaped profile
There is between the section centre of form and the described line of force of material certain eccentric distance e, wherein, described eccentric distance e big
Little obtain according to demand eccentric load during tension test；
S3, melted alloy of casting in the box of described stretching angle, described alloy melting point is less than described special-shaped section
Section bar and the fusing point of described stretching angle box, and described alloy melting point is higher than the highest temperature during tension test
Degree；
S4, until described alloy solidify after, to described stretching angle box apply tensile load.
Preferably, described alloy be fusing point be the bismuth alloy of 70 °.
In such scheme preferably, by described contoured cross section section bar along being perpendicular to described special-shaped section section bar
Section is divided into some flat square strips, and the axis of the section being perpendicular to described special-shaped section section bar is described
The length direction of special-shaped section section bar, limit longer on section is the width of described special-shaped section section bar,
Limit shorter on section is the thickness degree direction of special-shaped section section bar, and described eccentric distance e is more than or equal to 0, and
Width less than or equal to the longest flat square strip of described special-shaped section section bar.
Compared with prior art: the one that the present invention proposes carries out abnormal shape by casting low-melting point metal alloy
Section bar is fixed thus the method that applies tensile load, it is not necessary to additional designs docking bogusware again, to various sections
Section bar all can apply tensile load, and the stretching angle box of the low-melting point metal alloy simultaneously selected and design can weigh
Multiple application, reduces experimentation cost.
Accompanying drawing explanation
Fig. 1 is the stretching that abnormal shape section section bar of the present invention applies a preferred embodiment of the method for tensile load
Angle box and special-shaped section section bar position relationship schematic diagram.
Fig. 2 is the stretching angle box of embodiment illustrated in fig. 1 and schematic diagram fixed by special-shaped section section bar.
Fig. 3 is the special-shaped section section bar centre of form and the relation signal of stretching box center, angle of embodiment illustrated in fig. 1
Figure.
Wherein, 1 is the first special-shaped section section bar, and 2 is the second special-shaped section section bar, and 3 is stretching angle box, 4
For alloy.
Detailed description of the invention
Clearer, below in conjunction with the present invention for the purpose making the present invention implement, technical scheme and advantage
Accompanying drawing in embodiment, is further described in more detail the technical scheme in the embodiment of the present invention.Attached
In figure, the most same or similar label represents same or similar element or has same or like
The element of function.Described embodiment is a part of embodiment of the present invention rather than whole enforcement
Example.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to be used for explaining the present invention, and
It is not considered as limiting the invention.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under not making creative work premise, broadly falls into present invention protection
Scope.Below in conjunction with the accompanying drawings embodiments of the invention are described in detail.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " horizontal stroke
To ", "front", "rear", "left", "right", " vertically ", " level ", " top ",
Orientation or the position relationship of the instruction such as " end " " interior ", " outward " are based on orientation shown in the drawings or position
Put relation, be for only for ease of and describe the present invention and simplify description rather than instruction or the dress of hint indication
Put or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that
Limiting the scope of the invention.
Below by embodiment, the present invention is described in further details.
The invention provides a kind of method that special-shaped section section bar applies tensile load, mainly include following step
Rapid:
S1, arranging stretching angle box, described stretching angle box is provided with an opening surface and tensile load loading end,
When tensile load acts on described tensile load loading end, the line of force of described tensile load is along described opening surface
Center point to the center of described stretching angle box；
S2, the end of described special-shaped section section bar is placed in the box of described stretching angle, and described special-shaped profile
There is between the section centre of form and the described line of force of material certain eccentric distance e, wherein, described eccentric distance e big
Little obtain according to demand eccentric load during tension test；
S3, melted alloy of casting in the box of described stretching angle, described alloy melting point is less than described special-shaped section
Section bar and the fusing point of described stretching angle box, and described alloy melting point is higher than the highest temperature during tension test
Degree；
S4, until described alloy solidify after, to described stretching angle box apply tensile load.
In the present embodiment, described alloy be fusing point be the bismuth alloy of 70 °.
Firstly the need of explanation, in the present embodiment, contoured cross section section bar is mostly irregular strip, fixed
The axis that straight line is described contoured cross section section bar at the longer place, limit of the irregular strip of justice, or length side
To, as it is shown in figure 1, two ends that strip two ends are described contoured cross section section bar, between both ends
Line is the length direction of contoured cross section section bar, and vertically cutting the face that this length direction obtains is described contoured cross section
The section of section bar.
Above-mentioned section can be divided into the flat square strip of some rules, or it is to be understood that described different
Shape section section bar is divided into some flat square strips, such as figure along the section being perpendicular to described special-shaped section section bar
The section that being positioned in 3 stretches within angle box 3 can be divided into two rectangles and a semicircle, this reality
Execute in example, owing to semicircular structure accounts for smaller, semicircle can be equivalent to the length of side equal to semicircle radius
Square structure, wherein, the width of rectangular a length of described contoured cross section section bar, rectangular width
Thickness direction for described contoured cross section section bar.
As it is shown in figure 1, the present embodiment be used for judging the first special-shaped section section bar 1 and with the first special-shaped section
Bonding strength between the second special-shaped section section bar 2 that section bar 1 connects, due to two special-shaped section section bars
End face is irregular, if directly use tensioning member to carry out tension test, tensile load cannot act on uniformly
On end face, to this end, first the present embodiment gives a stretching angle box 3, as shown in Figures 1 and 2,
The end face of stretching angle box 3 is uncovered, and the volume of tensile load enough lays the end of described special-shaped section section bar
Portion, meanwhile, stretching angle box 3 is additionally provided with stretching end, such as arranges auricle, screw etc., its be used for
Stretching pressurized strut is attached, and when connecting stretching pressurized strut, stretching pressurized strut it is applied pulling force, draws
The direction of power is the center pointing to stretching angle box from the center of open face, in an alternate embodiment, draws
The straight line at power place can also be other parallel and center of open face and the line of centres stretching angle box.
In the present embodiment, after the described second special-shaped section section bar 2 is placed in stretching angle box 3, such as Fig. 2
Shown in, it is built in the alloy 4 of low melting point to described stretching angle box 3, it is to be understood that prioritizing selection is low
Melting metal alloys includes selecting "dead", fusing point higher than maximum temperature during tension test and less than examination
Test the low-melting point metal alloy of part fusing point, be cast to the low-melting point metal alloy of fusing stretch in the box of angle, directly
Solidify to low-melting point metal alloy, finally the testpieces poured being installed on testing machine applies stretching and carries
Lotus.
In the present embodiment, the end of described special-shaped section section bar is placed in the box of described stretching angle, and described different
The section centre of form of type profile section bar deviates described line of force certain distance, concrete, as it is shown on figure 3, described from
Line hands over described stretching angle box in C point, and O point is the section centre of form of described contoured cross section section bar, this distance e
Scope is generally: described eccentric distance e is more than or equal to 0, and in general, described eccentric distance e is also less than equal to
The width of the longest flat square strip of described special-shaped section section bar.
It should be noted that owing to the end of special-shaped section section bar may be irregular structure, the most not
Regular texture, in addition in irregular shape as described section, also includes that it can the most not parallel and institute
Stating section, i.e. it is rough structure, thus, when described special-shaped section section bar is divided into several
During flat square strip, the length of each flat square strip may be different.
It is understood that the size of eccentric distance e is obtained according to demand eccentric load during tension test, when
When test is made without applying eccentric load, eccentric distance e is 0, when needs carry out applying eccentric load,
First the size of eccentric distance e is calculated according to FEM (finite element) model, afterwards according to the size of e to stretching angle box 3
Be designed so that its meet can accommodate described contoured cross section profiled ends while, have enough spaces
The section centre of form making special-shaped section section bar deviates the distance of described line of force e.
Compared with prior art: the one that the present invention proposes carries out abnormal shape by casting low-melting point metal alloy
Section bar is fixed thus the method that applies tensile load, it is not necessary to additional designs docking bogusware again, to various sections
Section bar all can apply tensile load, and the stretching angle box of the low-melting point metal alloy simultaneously selected and design can weigh
Multiple application, reduces experimentation cost.
Last it is noted that above example is only in order to illustrate technical scheme, rather than right
It limits.Although the present invention being described in detail with reference to previous embodiment, the common skill of this area
Art personnel it is understood that the technical scheme described in foregoing embodiments still can be modified by it,
Or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, do not make corresponding
The essence of technical scheme departs from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (3)
1. the method that a special-shaped section section bar applies tensile load, it is characterised in that including:
S1, arranging stretching angle box, described stretching angle box is provided with an opening surface and tensile load loading end,
When tensile load acts on described tensile load loading end, the line of force of described tensile load is along described opening surface
Center point to the center of described stretching angle box；
S2, the end of described special-shaped section section bar is placed in the box of described stretching angle, and described special-shaped profile
There is between the section centre of form and the described line of force of material certain eccentric distance e, wherein, described eccentric distance e big
Little obtain according to demand eccentric load during tension test.
S3, melted alloy of casting in the box of described stretching angle, described alloy melting point is less than described special-shaped section
Section bar and the fusing point of described stretching angle box, and described alloy melting point is higher than the highest temperature during tension test
Degree；
S4, until described alloy solidify after, to described stretching angle box apply tensile load.
2. the method that special-shaped section section bar as claimed in claim 1 applies tensile load, it is characterised in that:
Described alloy be fusing point be the bismuth alloy of 70 °.
3. the method that special-shaped section section bar as claimed in claim 1 applies tensile load, it is characterised in that:
Described contoured cross section section bar is divided into some flat square along the section being perpendicular to described special-shaped section section bar
Strip, the axis of the section being perpendicular to described special-shaped section section bar is the length side of described special-shaped section section bar
To, limit longer on section is the width of described special-shaped section section bar, and limit shorter on section is special-shaped
The thickness degree direction of section section bar, described eccentric distance e is more than or equal to 0, and less than or equal to described special-shaped section
The width of the longest flat square strip of section bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610322350.9A CN106018082B (en) | 2016-05-16 | 2016-05-16 | A kind of method that abnormal shape section profile applies tensile load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610322350.9A CN106018082B (en) | 2016-05-16 | 2016-05-16 | A kind of method that abnormal shape section profile applies tensile load |
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| Publication Number | Publication Date |
|---|---|
| CN106018082A true CN106018082A (en) | 2016-10-12 |
| CN106018082B CN106018082B (en) | 2019-01-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114394259A (en) * | 2021-12-28 | 2022-04-26 | 航天东方红卫星有限公司 | Main load-bearing structure of satellite with satellite-rocket four-point connection |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0239733B2 (en) * | 1982-04-16 | 1990-09-06 | Daido Metal Co | |
| CN1119564A (en) * | 1994-05-25 | 1996-04-03 | 吉田桂一郎 | Upestting forger for working wire with iso-section |
| CN2455999Y (en) * | 2001-01-02 | 2001-10-24 | 王玉生 | Sectional material |
| JP3960951B2 (en) * | 2003-06-18 | 2007-08-15 | トヨタ自動車株式会社 | Evaluation method of die casting mold release agent or lubricant |
| CN201218785Y (en) * | 2007-01-31 | 2009-04-08 | 韩国线材株式会社 | End enclosure forming mold used for steel cable fracture test |
| KR20130066089A (en) * | 2011-12-12 | 2013-06-20 | 현대중공업 주식회사 | Mold device for quality testing of casting |
| CN203869945U (en) * | 2014-04-30 | 2014-10-08 | 淮北中成检测有限公司 | Tension destruction test fixture for steel wire rope |
| CN105004591A (en) * | 2015-08-03 | 2015-10-28 | 中钢集团郑州金属制品研究院有限公司 | Steel wire rope breaking and stretching casting object and device of casting test method thereof |
| CN105928790A (en) * | 2016-07-12 | 2016-09-07 | 攀钢集团研究院有限公司 | Steel strand tensile test method |
-
2016
- 2016-05-16 CN CN201610322350.9A patent/CN106018082B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0239733B2 (en) * | 1982-04-16 | 1990-09-06 | Daido Metal Co | |
| CN1119564A (en) * | 1994-05-25 | 1996-04-03 | 吉田桂一郎 | Upestting forger for working wire with iso-section |
| CN2455999Y (en) * | 2001-01-02 | 2001-10-24 | 王玉生 | Sectional material |
| JP3960951B2 (en) * | 2003-06-18 | 2007-08-15 | トヨタ自動車株式会社 | Evaluation method of die casting mold release agent or lubricant |
| CN201218785Y (en) * | 2007-01-31 | 2009-04-08 | 韩国线材株式会社 | End enclosure forming mold used for steel cable fracture test |
| KR20130066089A (en) * | 2011-12-12 | 2013-06-20 | 현대중공업 주식회사 | Mold device for quality testing of casting |
| CN203869945U (en) * | 2014-04-30 | 2014-10-08 | 淮北中成检测有限公司 | Tension destruction test fixture for steel wire rope |
| CN105004591A (en) * | 2015-08-03 | 2015-10-28 | 中钢集团郑州金属制品研究院有限公司 | Steel wire rope breaking and stretching casting object and device of casting test method thereof |
| CN105928790A (en) * | 2016-07-12 | 2016-09-07 | 攀钢集团研究院有限公司 | Steel strand tensile test method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114394259A (en) * | 2021-12-28 | 2022-04-26 | 航天东方红卫星有限公司 | Main load-bearing structure of satellite with satellite-rocket four-point connection |
| CN114394259B (en) * | 2021-12-28 | 2023-07-14 | 航天东方红卫星有限公司 | Main bearing structure of satellite-rocket four-point connection satellite |
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| Publication number | Publication date |
|---|---|
| CN106018082B (en) | 2019-01-18 |
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