CN104897392A - Auricle loaded test method and loading system - Google Patents
Auricle loaded test method and loading system Download PDFInfo
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- CN104897392A CN104897392A CN201510350447.6A CN201510350447A CN104897392A CN 104897392 A CN104897392 A CN 104897392A CN 201510350447 A CN201510350447 A CN 201510350447A CN 104897392 A CN104897392 A CN 104897392A
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Abstract
The invention discloses an auricle loaded test method and a loading system. The auricle loaded test method comprises the steps of: 1, clamping the other end of an auricle through a clamp; 2, determining a test bending moment needed by an examine position; 3, and simultaneously carrying out the following steps of applying a first load to the clamp, applying a second load to the examine position of the auricle, enabling the auricle to bear the bending moment perpendicular to one surface of the auricle itself, determining the value of the second load through formulas, applying a third load to the clamp, and enabling the second load and the third load to act at the same time so as to provide the test bending moment needed by the examine position of the auricle. By adopting the method provided by the invention, the test bending moment needed by the examine position of the auricle and a tension load provided by the first load are given at the same time, and the force bearing condition of the auricle is simulated accurately.
Description
Technical field
The present invention relates to aircraft technology field, particularly relate to a kind of auricle stand under load test method and loading system.
Background technology
The stressed complexity of aircraft auricle, is subject to the force and moment of multiple directions usually.
In the prior art, force and moment all has impact to the distribution of force of aircraft auricle, failure mode and load-bearing capacity.And in prior art, only apply separately power or moment, be difficult to the true loading conditions of accurate simulation auricle.
Therefore, wish a kind of technical scheme to overcome or at least alleviate at least one above-mentioned defect of prior art.
Summary of the invention
The object of the present invention is to provide a kind of auricle stand under load test method to overcome or at least alleviate at least one above-mentioned defect of prior art.
For achieving the above object, the invention provides a kind of auricle stand under load test method, described auricle stand under load test method comprises:
Step 1: one end of auricle 1 is fixedly installed on load wall 2, is clamped the other end of auricle 1 by fixture 3;
Step 2: according to testing requirements, determines to examine position to need the test moment of flexure applied, and obtains the distance of one end to the other end being fixedly installed on load wall 2 of auricle 1;
Step 3: simultaneously carry out:
Fixture 3 applies the first load, this first load give auricle 1 one along auricle 1 axial direction, make auricle 1 away from the power of load wall 2, determine the distance between the position that the position of the first load applying on fixture 3 to auricle 1 is fixedly installed on load wall 2;
Apply the second load in the position, examination position 4 of auricle, make auricle 1 be subject to one perpendicular to the moment of flexure in the face of himself, determined the numerical value of the second load by formula;
Fixture 3 applies the 3rd load, auricle 1 is made to be subject to a load contrary with the direction of the second load, according to the numerical value of the applying position of the 3rd load and the position relationship of the second load applying and the second load, determined the numerical value of described 3rd load by formula;
Make the second load and the 3rd load acting in conjunction, thus the test moment of flexure needed for examination position of auricle 1 can be given.
Preferably, the numerical value of the second load is determined by following formula:
P
2be the second load; M
0for test moment of flexure; L
3for the distance of one end to the other end being fixedly installed on load wall of auricle; L
2be the distance that be fixed on one end of load wall of position to auricle of the first load applying.
Preferably, the concrete defining method of size of described 3rd load comprises the steps:
Make the second load be unit load, record described auricle when being subject to separately this specific loading, the displacement δ at described examination position
2;
Choose arbitrarily the 3rd position of load applying on described fixture, and make the 3rd load be unit load, when obtaining independent applying the 3rd load, the displacement δ at described examination position
3;
The numerical value of the 3rd load is determined according to following formula:
P
3it is the 3rd load value; δ
2the displacement at examination position when be the second load being unit load; δ
3the displacement δ at position is examined when 3rd load is unit load
3; P
2be the numerical value of the first load.
Preferably, the distance L that be fixed on one end of load wall of position to auricle of described first load applying is made
2equal the distance L of one end to the other end being fixedly installed on load wall of the described auricle of 1.5 times
3.
Preferably, described auricle stand under load test method is applicable to the carry-on auricle being subject to face internal force and face Moments.
Present invention also offers a kind of loading system, described loading system is used for auricle stand under load test method as above, and described loading system comprises: load wall, and described load wall is used for one end of fixing auricle; Fixture, described fixture is used for the other end of fixing described auricle; First pressurized strut, described first pressurized strut is connected with described fixture, and described first pressurized strut for applying the first load on described fixture; Second pressurized strut, described second pressurized strut is connected with described fixture, and described second pressurized strut is used for applying the second load to the examination site location place of described fixture; 3rd pressurized strut, described 3rd pressurized strut is connected with described fixture, and described 3rd pressurized strut for applying the 3rd load on described fixture.
Preferably, the distance at described first pressurized strut and described fixture junction to one end place away from described first pressurized strut of described auricle equals one end being arranged on described load wall of the described auricle of 1.5 times to the distance examining position.
Auricle stand under load test method of the present invention applies the first load, the second load and the 3rd load simultaneously, make described second load and described 3rd load acting in conjunction, thus the tensile load that the test moment of flexure needed for examination position of described auricle and the first load gives can be given simultaneously.The accurate simulation stressing conditions of auricle, provides the foundation for carrying out auricle test further.And auricle stand under load test method application of the present invention is simple and convenient.
Accompanying drawing explanation
Fig. 1 is the stressed schematic diagram utilizing auricle stand under load test method to load auricle according to an embodiment of the invention.
Fig. 2 is the structural representation of loading system according to an embodiment of the invention.
Reference numeral:
| 1 | Auricle | 5 | First pressurized strut |
| 2 | Load wall | 6 | Second pressurized strut |
| 3 | Fixture | 7 | 3rd pressurized strut |
| 4 | Examination position |
Embodiment
For making object of the invention process, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Described embodiment is the present invention's part embodiment, instead of whole embodiments.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
In describing the invention; it will be appreciated that; term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limiting the scope of the invention.
Fig. 1 is the stressed schematic diagram utilizing auricle stand under load test method to load auricle according to an embodiment of the invention.
As shown in Figure 1, auricle stand under load test method of the present invention comprises:
Step 1: one end of auricle 1 is fixedly installed on load wall 2, is clamped the other end of auricle 1 by fixture 3;
Step 2: according to testing requirements, determines to examine position to need the test moment of flexure applied, and obtains the distance of one end to the other end being fixedly installed on load wall 2 of described auricle 1; Be understandable that, one end being fixedly installed on load wall 2 of the described auricle 1 of this acquisition to the distance of the other end is the L in figure
2, this numerical value obtains by measuring.
Step 3: simultaneously carry out:
Fixture 3 applies the first load, this first load give auricle 1 one along auricle 1 axial direction, make auricle 1 away from the power of load wall 2, determine the distance between the position that the position of the first load applying on fixture 3 to auricle 1 is fixedly installed on load wall 2;
In the present embodiment, the position of the first load applying on fixture 3 to auricle 1 distance being fixedly installed on load wall 2 between position is the L in Fig. 1
3.
Apply the second load in the position, examination position 4 of auricle, make auricle 1 be subject to one perpendicular to the moment of flexure in the face of himself, determined the numerical value of the second load by formula;
In the present embodiment, the numerical value of the second load is determined by following formula:
M
0for the test moment of flexure in described step 2; L
3(the L shown in Fig. 1
3) be the distance of one end to the other end being fixedly installed on load wall of auricle; L
2(the L shown in Fig. 2
2) be the distance that be fixed on one end of load wall of position to auricle of the first load applying.
Fixture 3 applies the 3rd load, makes auricle 1 be subject to a load contrary with the direction of the second load, according to the numerical value of the applying position of the 3rd load and the position relationship of the second load applying and the second load, determined the numerical value of the 3rd load by formula; Particularly, the concrete defining method of size of the 3rd load comprises the steps:
The second load is made to be unit load, when record auricle 1 is subject to separately this specific loading, the displacement δ at examination position 4
2;
Choose arbitrarily the 3rd position of load applying on fixture 3, and make the 3rd load be unit load, when obtaining independent applying the 3rd load, the displacement δ at examination position 4
3;
The numerical value of the 3rd load is determined according to following formula:
P
3it is the 3rd load value; δ
2the displacement at examination position when be the second load being unit load; δ
3the displacement δ at position is examined when 3rd load is unit load
3; P
2be the numerical value of the first load.
Be understandable that, namely specific loading sets this load is 1N/m, and now, the first load is different from the position of the second load applying, thus causes δ
2and δ
3difference.Namely the position of load is different has mutual corresponding relation with the displacement at examination position.
Second load and the 3rd load acting in conjunction, thus the test moment of flexure needed for examination position that can give auricle 1.
Auricle stand under load test method of the present invention applies the first load, the second load and the 3rd load simultaneously, make the second load and the 3rd load acting in conjunction, thus the tensile load that the test moment of flexure needed for examination position of auricle and the first load gives can be given simultaneously.The accurate simulation stressing conditions of auricle, provides the foundation for carrying out auricle test further.And auricle stand under load test method application of the present invention is simple and convenient.
See Fig. 1, in the present embodiment, make the position of the first load applying to the distance L being fixed on one end of load wall 2 of auricle 1
2equal the distance L of one end to the other end being fixedly installed on load wall 2 of the auricle of 1.5 times
3.Adopt this structure, conveniently carry out the determination of the numerical value of the second load and the 3rd load.
Advantageously, auricle stand under load test method is applicable to the carry-on auricle being subject to face internal force and face Moments.
Present invention also offers a kind of loading system, described loading system comprises load wall 2, fixture 3, first pressurized strut 5, second pressurized strut 6 and the 3rd pressurized strut 7, and wherein, load wall 2 is for one end of fixing auricle 1; Fixture 3 is for the other end of fixing auricle 1; First pressurized strut 5 is connected with fixture 3, and the first pressurized strut 5 for applying the first load on fixture; Second pressurized strut 6 is connected with fixture 3, and the second pressurized strut 6 applies the second load for the position, examination position 4 to fixture 3; 3rd pressurized strut 7 is connected with fixture 3, and the 3rd pressurized strut 7 for applying the 3rd load on fixture 3.
Advantageously, the first pressurized strut 5 and the distance at fixture 3 junction to one end place away from the first pressurized strut 5 of auricle 1 equal one end being arranged on load wall 2 of the auricle 1 of 1.5 times to the distance examining position 4.
Finally it is to be noted: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit.Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (7)
1. an auricle stand under load test method, is characterized in that, described auricle stand under load test method comprises:
Step 1: be fixedly installed on one end of auricle (1) on load wall (2), by the other end of fixture (3) clamping auricle (1);
Step 2: according to testing requirements, determines to examine position to need the test moment of flexure applied, and obtains the distance of one end to the other end being fixedly installed on load wall (2) of described auricle (1);
Step 3: simultaneously carry out:
In upper applying first load of fixture (3), this first load give described auricle (1) along described auricle (1) axial direction, make described auricle (1) away from the power of load wall (2), determine the distance between the position that the position of described first load applying on described fixture (3) to described auricle (1) is fixedly installed on load wall (2);
Apply the second load in examination position (4) position of described auricle, make described auricle (1) be subject to a moment of flexure perpendicular to the face of himself, determined the numerical value of described second load by formula;
In upper applying the 3rd load of fixture (3), described auricle (1) is made to be subject to a load contrary with the direction of described second load, according to the numerical value of the described applying position of the 3rd load and the position relationship of the second load applying and the second load, determined the numerical value of described 3rd load by formula;
Make described second load and described 3rd load acting in conjunction, thus the test moment of flexure needed for examination position of described auricle (1) can be given.
2. auricle stand under load test method as claimed in claim 1, it is characterized in that, the numerical value of described second load is determined by following formula:
P
2be the second load; M
0for test moment of flexure; L
3for the distance of one end to the other end being fixedly installed on load wall of auricle; L
2be the distance that be fixed on one end of load wall of position to auricle of the first load applying.
3. auricle stand under load test method as claimed in claim 2, it is characterized in that, the concrete defining method of size of described 3rd load comprises the steps:
Make the second load be unit load, record described auricle (1) when being subject to separately this specific loading, the displacement δ of described examination position (4)
2;
Choose arbitrarily the position of the 3rd load applying on described fixture (3), and make the 3rd load be unit load, when obtaining independent applying the 3rd load, the displacement δ of described examination position (4)
3;
The numerical value of the 3rd load is determined according to following formula:
P
3it is the 3rd load value; δ
2the displacement at examination position when be the second load being unit load; δ
3the displacement δ at position is examined when 3rd load is unit load
3; P
2be the numerical value of the first load.
4. auricle stand under load test method as claimed in claim 2, is characterized in that, make the position of described first load applying to the distance L being fixed on one end of load wall (2) of auricle (1)
2equal the distance L of one end to the other end being fixedly installed on load wall (2) of the described auricle of 1.5 times
3.
5. the auricle stand under load test method as described in Claims 1-4, is characterized in that, described auricle stand under load test method is applicable to the carry-on auricle being subject to face internal force and face Moments.
6. a loading system, described loading system is used for as the auricle stand under load test method in claim 1 to 5 as described in any one, and it is characterized in that, described loading system comprises:
Load wall (2), described load wall (2) is for one end of fixing auricle (1);
Fixture (3), described fixture (3) is for the other end of fixing described auricle (1);
First pressurized strut (5), described first pressurized strut (5) is connected with described fixture (3), and described first pressurized strut (5) for applying the first load on described fixture;
Second pressurized strut (6), described second pressurized strut (6) is connected with described fixture (3), and described second pressurized strut (6) applies the second load for examination position (4) position to described fixture (3);
3rd pressurized strut (7), described 3rd pressurized strut (7) is connected with described fixture (3), and described 3rd pressurized strut (7) is for going up applying the 3rd load to described fixture (3).
7. loading system as claimed in claim 6, it is characterized in that, described first pressurized strut (5) equals one end being arranged on described load wall (2) of the described auricle (1) of 1.5 times to the distance examining position (4) with the distance at described fixture (3) junction to one end place away from described first pressurized strut (5) of described auricle (1).
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Cited By (6)
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| CN105366074A (en) * | 2015-11-25 | 2016-03-02 | 中国航空工业集团公司沈阳飞机设计研究所 | Load applying method for three-degrees-of-freedom single-lug lug piece |
| CN110712763A (en) * | 2019-10-12 | 2020-01-21 | 哈尔滨飞机工业集团有限责任公司 | Single-spar crack propagation test device and test method |
| CN110954317A (en) * | 2019-12-25 | 2020-04-03 | 中国航空工业集团公司西安飞机设计研究所 | Loading method of joint bearing multi-directional load |
| CN112213088A (en) * | 2020-09-22 | 2021-01-12 | 上海航天精密机械研究所 | Cabin structure compression-shear coupling load test device |
| CN112591135A (en) * | 2020-11-03 | 2021-04-02 | 中国航空工业集团公司沈阳飞机设计研究所 | Aircraft static test load loading method |
| CN113820115A (en) * | 2021-09-24 | 2021-12-21 | 无锡威孚力达催化净化器有限责任公司 | Double-shaft lifting lug fatigue performance testing device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366074A (en) * | 2015-11-25 | 2016-03-02 | 中国航空工业集团公司沈阳飞机设计研究所 | Load applying method for three-degrees-of-freedom single-lug lug piece |
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| CN110954317A (en) * | 2019-12-25 | 2020-04-03 | 中国航空工业集团公司西安飞机设计研究所 | Loading method of joint bearing multi-directional load |
| CN110954317B (en) * | 2019-12-25 | 2022-02-08 | 中国航空工业集团公司西安飞机设计研究所 | Loading method of joint bearing multi-directional load |
| CN112213088A (en) * | 2020-09-22 | 2021-01-12 | 上海航天精密机械研究所 | Cabin structure compression-shear coupling load test device |
| CN112591135A (en) * | 2020-11-03 | 2021-04-02 | 中国航空工业集团公司沈阳飞机设计研究所 | Aircraft static test load loading method |
| CN113820115A (en) * | 2021-09-24 | 2021-12-21 | 无锡威孚力达催化净化器有限责任公司 | Double-shaft lifting lug fatigue performance testing device |
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