CN106976548A - It is a kind of can it is preset fracture angle broken plate and its fracture angle design method - Google Patents
It is a kind of can it is preset fracture angle broken plate and its fracture angle design method Download PDFInfo
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- CN106976548A CN106976548A CN201710308408.9A CN201710308408A CN106976548A CN 106976548 A CN106976548 A CN 106976548A CN 201710308408 A CN201710308408 A CN 201710308408A CN 106976548 A CN106976548 A CN 106976548A
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- broken plate
- fracture
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000013461 design Methods 0.000 title claims description 21
- 230000003313 weakening effect Effects 0.000 claims abstract description 37
- 238000005452 bending Methods 0.000 claims abstract description 26
- 210000002421 cell wall Anatomy 0.000 claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 11
- 238000010008 shearing Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 29
- 238000005259 measurement Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000013404 process transfer Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/32—Severable or jettisonable parts of fuselage facilitating emergency escape
Abstract
The invention discloses it is a kind of can it is preset fracture angle broken plate, the single or double of the broken plate is provided with weakening groove, the broken plate is weakening at groove before bending fracture, two relative cell walls for weakening groove are contacted with each other, after the cell wall is contacted with each other, broken plate is broken by weakening groove.The broken plate of the present invention is contacted with each other using weakening two relative cell walls of groove before fracturing, broken plate weak point Main Load is set to become pulling force from moment of flexure, finally break broken plate weak point, and the process that broken plate weak point is broken is broken compared to the fracture process of original broken plate closer to whole broken plate along plane of weakness simultaneously, it is smaller than original broken plate to the bearing capacity change of shearing in fracture process, be conducive to reducing the dispersiveness of fracture angle, so that broken plate can be more easy to realize specific fracture angle.
Description
Technical field
Professional skill field is separated the invention belongs to missile in technical field of aerospace, more particularly to one kind preset can be broken
The broken plate and its fracture angle design method of angle.
Background technology
In some aircraft, the jettisoning such as part-structure such as air intake duct radome fairing is needed in flight course（This part-structure
Hereinafter referred to as missile）, broken plate is used for missile and the part of body is connected.Broken plate is to be provided with weakening groove in the middle part of one kind
Plate part, connect missile and body respectively to weaken groove as the broken plate two ends of boundary.When missile is delivered, break
Split other connectors beyond plate first to disconnect, missile drives broken plate missile side to rotate around broken plate weak point
（Bend）Until weak point is broken completely, then missile is disconnected with body by the connection of broken plate.Original broken plate
It can be divided into three kinds of situations according to slot number amount and broken plate overbending direction is weakened：（1）One-side gaining, to fluting direction of expansion bending,
As shown in Figure 1；（2）One-side gaining, reduces direction bending, as shown in Figure 2 to fluting；（3）Double surface grooving, one side is curved thereto
Folding, as shown in Figure 3.If broken plate is not broken during bending, situation（1）About 180 ° can be bent around broken plate weak point,
Situation（2）With（3）More than 70 ° can be bent around broken plate weak point.Original broken plate bending angle not yet reach it is above-mentioned around
The maximum bent angle of broken plate weak point has just been broken, and from starting to be folded into during the entire process of final fracture, is bent
Rotation section be always positioned at broken plate weak point, the Main Load for causing fracture is moment of flexure around broken plate weak point.This shape
The fracture actual crack angle of formula depends primarily on material property, and the means of adjustment fracture angle are mainly change material or changed
Become material working environment, such as temperature is tough by conventional fracture plate material such as titanium alloy, high strength alloy steel, high-strength aluminum alloy
Property distribution and material work the limitation of environmental change, realize that specific fracture angle is often more difficult.In addition, this shape
In the fracture process of formula, crack stretches one towards compression when extension is reached and compressed up to crack from broken plate weak point,
During being extended in crack, the ability of broken plate weak point carrying shearing gradually weakens, if broken plate application environment is present
The change shearing of broken plate weak point is acted on, changes shearing as caused by missile transport disengaging height, attitudes vibration, is then easy to
Crack not yet stretches some correspondence bending angle fracture when reaching compression from broken plate weak point, causes to be broken angle
It is scattered larger.
The content of the invention
It is an object of the invention to：It can realize that special angle is broken there is provided one kind for above-mentioned problem, and it is disconnected
Split angle by fracture angle dispersive effects caused by outside shearing change it is smaller can the broken plate of preset fracture angle and its disconnected
Split angle design method.
The technical proposal of the invention is realized in this way：It is a kind of can it is preset fracture angle broken plate, in the broken plate
Single or double be provided with weakening groove, it is characterised in that：The broken plate is weakening at groove before bending fracture, the weakening groove
Two relative cell walls contact with each other, after the cell wall is contacted with each other, broken plate by weakening groove be broken.
It is of the present invention can preset fracture angle broken plate, its described weakening groove is V-shaped, and bending broken plate is until cut
The angle that weak two relative cell walls of groove are bent when contacting with each other is θ2, the included angle θ for weakening groove2No more than broken plate
Actual crack angle, θ1。
It is of the present invention can preset fracture angle broken plate, its described cell wall for weakening groove contacts with each other and makes weakening groove
Subsequent bending process transfer moves portion and translates a segment distance from broken plate weak point to notch direction is weakened, and broken plate turns around new
Dynamic portion continues to bend, and broken plate weak point Main Load is become pulling force from moment of flexure, finally breaks broken plate weak point.
It is of the present invention can it is preset fracture angle broken plate fracture angle design method, it is characterised in that：Note is disconnected
It is θ to split plate design fracture angle, and actual crack angle is θ1, bending broken plate is until weakening two relative cell walls of groove mutually connect
The angle bent when tactile is θ2；Due to weakening the influence of extruding compression and Materials Fracture when two relative cell walls of groove are contacted with each other
When elongation percentage influence so that θ1＞ θ2, wherein θ2It can be determined in machining, θ1Actual measurement is then needed, to make θ1With θ it
Between deviation reach engineering license deviation range in, following steps can be taken to determine θ2：
A. θ is selected2Initial value, θ2Initial value may be selected a value close to θ, can be taken as θ in the case of rawness data,
A value for being less than θ can be rule of thumb taken in the case where there are experience data；
B. according to θ2Design processing broken plate；
C. measurement broken plate is broken angle, θ1；
D. fracture angular deviation is judged（θ1-θ）Whether in the deviation range of license, if it is, current θ2I.e. as final
Result；If it is not, then by θ2Subtract（θ1-θ）It is used as new θ2, repeat step b~step d.
It is of the present invention can it is preset fracture angle broken plate fracture angle design method, its described broken plate according to
The difference of design fracture angle, θ, the toughness reguirements to fracture plate material is also different, and it is disconnected whether checking fracture plate material meets design
The toughness reguirements under angle is split, according to can be with the following method to the carrying demand of shearing in fracture process：
If weakness needs to remain higher shear resistance before broken plate fracture, θ can be processed with the material2Value is not small
In θ and weak point thickness identical broken plate, if bending angle reaches θ, broken plate does not occur human eye visible crack, then should
Toughness of material, which is met, to be required；If weakness need not remain higher shear resistance before broken plate fracture, the material can be used
Material processing θ2Value is not less than θ and weak point thickness identical broken plate, if bending angle reaches θ, broken plate is not complete
Fracture, then the toughness of material, which is met, requires.
The broken plate of the present invention is contacted with each other using weakening two relative cell walls of groove before fracturing, makes broken plate weak point
Main Load becomes pulling force from moment of flexure, finally breaks broken plate weak point, and the process that broken plate weak point is broken is compared to original
The fracture process for having broken plate is broken simultaneously closer to whole broken plate along plane of weakness, to the carrying of shearing in fracture process
Power change is smaller than original broken plate, is conducive to reducing the dispersiveness of fracture angle so that broken plate can be more easy to realize it is specific
Fracture angle.
Brief description of the drawings
Fig. 1 is existing one-side gaining and the broken plate structure bent to fluting direction of expansion.
Fig. 2 is existing one-side gaining and the broken plate structure of direction bending is reduced to fluting.
The broken plate structure that Fig. 3 is existing double surface grooving and one side is bent thereto.
The broken plate that Fig. 4 is the present invention moves portion's translation schematic diagram in bending process transfer.
Reference：1 is broken plate, and 1a is rotation section, and 2 is weaken groove, and 2a is cell wall.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in figure 1, it is a kind of can it is preset fracture angle broken plate, be provided with the single or double of the broken plate 1
Weaken groove 2, when weakening groove broken plate using opening one side, reduce direction bending to fluting, or groove fracture is weakened using double open
During plate, one side is bent thereto, and the broken plate 1 is weakening at groove 2 before bending fracture, it is described weaken two of groove 2 it is relative
Cell wall 2a is contacted with each other, after the cell wall 2a is contacted with each other, and broken plate 1 is broken by weakening groove 2.
Wherein, the weakening groove 2 is V-shaped, the contact area when shape contacts with each other two relative cell walls of weakening groove
Maximum, so as to reduce footprint pressure, weakens influence of the compressive deformation to fracture angle, bending broken plate 1 until weakening groove 2 two
The angle that relative cell wall 2a is bent when contacting with each other is θ2, the included angle θ for weakening groove 22The no more than reality of broken plate 1
Border is broken angle, θ1, the cell wall 2a for weakening groove 2 contacts with each other the bending process transfer for making weakening groove 2 subsequent and moves portion 1a from disconnected
Split the weak point of plate 1 and translate a segment distance to notch direction is weakened, broken plate 1 continues to bend around new rotation section 1a, makes broken plate 1
Weak point Main Load becomes pulling force from moment of flexure, finally breaks the weak point of broken plate 1, and broken plate is fracture.
It is a kind of can it is preset fracture angle broken plate fracture angle design method, be specially：Remember broken plate design fracture
Angle is θ, and actual crack angle is θ1, bending broken plate is until weaken the angle bent when two relative cell walls of groove are contacted with each other
Spend for θ2；The shadow of elongation percentage when extruding influence and the Materials Fracture of compression when two relative cell walls of groove are contacted with each other due to weakening
Ring so that θ1＞ θ2, wherein θ2It can be determined in machining, θ1Actual measurement is then needed, to make θ1Deviation between θ reaches
In the deviation range of engineering license, following steps can be taken to determine θ2：
A. θ is selected2Initial value, θ2Initial value may be selected a value close to θ, can be taken as θ in the case of rawness data,
A value for being less than θ can be rule of thumb taken in the case where there are experience data；
B. according to θ2Design processing broken plate；
C. measurement broken plate is broken angle, θ1；
D. fracture angular deviation is judged（θ1-θ）Whether in the deviation range of license, if it is, current θ2I.e. as final
Result；If it is not, then by θ2Subtract（θ1-θ）It is used as new θ2, repeat step b~step d.
Wherein, the broken plate is broken the difference of angle, θ according to design, and the toughness reguirements to fracture plate material is also different,
Whether checking fracture plate material meets the toughness reguirements under design fracture angle, according in fracture process to the carrying demand of shearing
Can be with the following method：
If weakness needs to remain higher shear resistance before broken plate fracture, θ can be processed with the material2Value is not small
In θ and weak point thickness identical broken plate, if bending angle reaches θ, broken plate does not occur human eye visible crack, then should
Toughness of material, which is met, to be required；If weakness need not remain higher shear resistance before broken plate fracture, the material can be used
Material processing θ2Value is not less than θ and weak point thickness identical broken plate, if bending angle reaches θ, broken plate is not complete
Fracture, then the toughness of material, which is met, requires.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (5)
1. it is a kind of can it is preset fracture angle broken plate, in the broken plate（1）Single or double be provided with weakening groove（2）,
It is characterized in that：The broken plate（1）Weakening groove（2）Before place's bending fracture, the weakening groove（2）Two relative cell walls
（2a）Contact with each other, the cell wall（2a）After contacting with each other, broken plate（1）By weakening groove（2）Place's fracture.
2. it is according to claim 1 can it is preset fracture angle broken plate, it is characterised in that：The weakening groove（2）In V
Shape, bends broken plate（1）Until weakening groove（2）Two relative cell walls（2a）The angle bent when contacting with each other is θ2, it is described
Weaken groove（2）Included angle θ2No more than broken plate（1）Actual crack angle, θ1。
3. it is according to claim 1 or 2 can it is preset fracture angle broken plate, it is characterised in that：The weakening groove（2）'s
Cell wall（2a）Contacting with each other makes weakening groove（2）Portion is moved in subsequent bending process transfer（1a）From broken plate（1）Weak point is to weakening
Notch direction translates a segment distance, broken plate（1）Around new rotation section（1a）Continue to bend, make broken plate（1）Weak point is main
Load becomes pulling force from moment of flexure, finally makes broken plate（1）Weak point is broken.
4. according to claim 1,2 or 3 can it is preset fracture angle broken plate fracture angle design method, its feature
It is：Remember that broken plate design fracture angle is θ, actual crack angle is θ1, bending broken plate is until to weaken groove two relative
The angle bent when cell wall is contacted with each other is θ2；Due to weakening the influence of extruding compression when two relative cell walls of groove are contacted with each other
The influence of elongation percentage during with Materials Fracture so that θ1＞ θ2, wherein θ2It can be determined in machining, θ1Actual measurement is then needed,
To make θ1Deviation between θ is reached in the deviation range of engineering license, following steps can be taken to determine θ2：
A. θ is selected2Initial value, θ2Initial value may be selected a value close to θ, can be taken as θ in the case of rawness data,
A value for being less than θ can be rule of thumb taken in the case where there are experience data；
B. according to θ2Design processing broken plate；
C. measurement broken plate is broken angle, θ1；
D. fracture angular deviation is judged（θ1-θ）Whether in the deviation range of license, if it is, current θ2I.e. as final
As a result；If it is not, then by θ2Subtract（θ1-θ）It is used as new θ2, repeat step b~step d.
5. it is according to claim 4 can it is preset fracture angle broken plate fracture angle design method, it is characterised in that：
The broken plate is broken the difference of angle, θ according to design, and the toughness reguirements to fracture plate material is also different, checking fracture plate material
Whether the toughness reguirements under satisfaction design fracture angle, according to can be with the following method to the carrying demand of shearing in fracture process：
If weakness needs to remain higher shear resistance before broken plate fracture, θ can be processed with the material2Value is not small
In θ and weak point thickness identical broken plate, if bending angle reaches θ, broken plate does not occur human eye visible crack, then should
Toughness of material, which is met, to be required；If weakness need not remain higher shear resistance before broken plate fracture, the material can be used
Material processing θ2Value is not less than θ and weak point thickness identical broken plate, if bending angle reaches θ, broken plate is not complete
Fracture, then the toughness of material, which is met, requires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710308408.9A CN106976548B (en) | 2017-05-04 | 2017-05-04 | Fracture plate capable of presetting fracture angle and fracture angle design method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710308408.9A CN106976548B (en) | 2017-05-04 | 2017-05-04 | Fracture plate capable of presetting fracture angle and fracture angle design method thereof |
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| CN106976548A true CN106976548A (en) | 2017-07-25 |
| CN106976548B CN106976548B (en) | 2024-01-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115400826A (en) * | 2022-04-22 | 2022-11-29 | 蓝城房产建设管理集团有限公司 | Construction waste recovery device and recovery method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| Publication number | Publication date |
|---|---|
| CN106976548B (en) | 2024-01-26 |
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