CN105954092B - A kind of position-variable flexible frock structure of stringer - Google Patents
A kind of position-variable flexible frock structure of stringer Download PDFInfo
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- CN105954092B CN105954092B CN201610529077.7A CN201610529077A CN105954092B CN 105954092 B CN105954092 B CN 105954092B CN 201610529077 A CN201610529077 A CN 201610529077A CN 105954092 B CN105954092 B CN 105954092B
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- stringer
- flexible frock
- flexible
- longitudinal direction
- distribution
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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
- 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
Abstract
The invention belongs to aerospace structure primary load bearing Parts Experiment tooling technical field, it is related to proposing a kind of position-variable flexible frock structure of stringer.The structure is made of upper and lower side frame and position-variable transverse and longitudinal stringer.Position-variable longitudinal direction stringer is to be used for simulated experiment loading conditions.The distribution angle that the present invention passes through the longitudinal stringer of change, realize that flexible frock Stiffness Distribution has designability, so that the Stiffness Distribution of flexible frock is consistent with the Stiffness Distribution of real border, the Path of Force Transfer of test fixture is significantly improved, and improve the accuracy of barrel shell structure control experiment.In addition, the present invention has simple in structure, the low advantage of manufacturing cost.
Description
Technical field
The present invention relates to aerospace structure primary load bearing Parts Experiment Fixture Design field, propose that a kind of stringer position is variable
Flexible frock structure.
Background technology
The experiment check for playing rocket body section rigidity and intensity is essential horizontal section in structured design process.Test load
It is transmitted to by test fixture in bullet rocket body section to be checked, form tests load distribution, and plays rocket body structure military service process
In, the real load that section is subject to is transmitted to by its adjacent section, forms real load distribution.The distribution of two kinds of load it is identical with
The no accuracy for being related to control experiment.The experiment load distribution of conventional uniform tooling form is typically uniform, and is satisfaction
The needs such as equipment installation, pipe installation, heat dissipation play the opening shadow being inevitably present in the thin wall reinforced section of rocket body structure
The symmetry of structure is rung, the asymmetry of this structure makes real load be unevenly distributed.Minor diameter bullet rocket body section knot
Structure has smaller radius-thickness ratio, and asymmetry is weak, real load distribution uniform, and traditional uniform experiments tooling meets experiment
Load distribution demand.But it is big straight with the design requirements such as the major diameter of China's heavy launcher and big aircraft, thin-walled, ultralight
Diameter bullet rocket body has larger radius-thickness ratio, and the asymmetry of structure is notable, and malformation no longer meets plane section assumption, traditional
Uniform experiments tooling cannot meet experiment load distribution demand.Therefore, test fixture design work of new generation is compeled in eyebrow
Eyelash.
Invention content
Present invention mainly solves China's heavy launchers to test load distribution simulation problem, proposes that a kind of stringer position can
The flexible frock structure of change realizes the purpose of the accurate simulation of experiment load distribution.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of position-variable flexible frock structure of stringer, including flexible frock upper end frame, flexible frock lower end frame, flexibility
Tooling transverse direction stringer and flexible frock longitudinal direction stringer.Upper and lower side frame and transverse and longitudinal stringer can be fabricated by welding procedure.It is flexible
Tooling transverse direction stringer is interspersed with flexible frock longitudinal direction stringer, forms grid type.The upper end of flexible frock transverse direction stringer extends
Go out flexible frock upper end frame, flexible frock lower end frame is extended in the lower end of flexible frock transverse direction stringer.
Wherein, the flexible frock longitudinal direction stringer distribution determines, flexible work according to experiment load distribution to be simulated
The lateral stringer of dress is axially uniformly distributed.The stringer distribution of flexible frock longitudinal direction is variable, the number root of flexible frock longitudinal direction stringer
It is distributed and determines according to experiment load to be simulated.Cylindrical surface diameter where flexible frock transverse direction stringer and flexible frock longitudinal direction stringer
The diameter of section to be tested connected to it is identical.
Wherein, the lateral stringer and longitudinal stringer are rectangular section.
The flexible frock structure of the present invention, uniform experiments tooling being assigned to uniform load used for control experiment
It in section to be checked, results in that control experiment load distribution is untrue, influences the accuracy problem of control experiment, propose stringer position
Set variable flexible frock structure.The structure changes the distribution angle of longitudinal stringer by design optimizing, realizes flexible work
Filling Stiffness Distribution has designability so that the Stiffness Distribution of flexible frock is consistent with the Stiffness Distribution of real border, substantially changes
The Path of Force Transfer of kind test fixture, and improve the accuracy of barrel shell structure control experiment.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 (a) is flexible frock structure chart of the embodiment of the present invention；
Fig. 2 (b) is real border tool structure figure.
Fig. 3 (a) is the axial displacement index comparison diagram of real border of embodiment of the present invention tooling and traditional tooling；
Fig. 3 (b) is the axial displacement index comparison diagram of real border of embodiment of the present invention tooling and flexible frock.
In figure：1 flexible frock upper end frame；2 flexible frock lower end frames；3 flexible frock longitudinal direction stringers；4 flexible frocks are lateral
Stringer；5 sections to be checked；6 flexible frocks；7 real border sections.
Specific implementation mode
The present invention is described in detail with reference to the accompanying drawings and examples.
The present invention manufactures a kind of position-variable flexible frock structure of stringer using aluminum alloy materials, realizes experiment load point
The purpose of the accurate simulation of cloth.
With reference to figure 1, according to the position-variable flexible frock structure of stringer provided by the invention, including flexible frock upper end frame
1, flexible frock lower end frame 2, flexible frock transverse direction stringer 3 and flexible frock longitudinal direction stringer 4.The flexible structure can be by welding procedure
To fabricate.Lateral stringer is interspersed with longitudinal stringer, forms grid type.Upper end frame is extended in the upper end of lateral stringer,
Extend lower end frame in the lower end of lateral stringer.
Wherein, longitudinal stringer distribution determines that longitudinal stringer distribution can according to experiment load distribution to be simulated
Become.
Wherein, the number of longitudinal stringer is distributed according to experiment load to be simulated and is determined.
Wherein, the lateral stringer is axially uniformly distributed.
Wherein, the diameter of the lateral stringer and longitudinal stringer place cylindrical surface diameter section to be tested connected to it
It is identical.Wherein, the lateral stringer and longitudinal stringer are rectangular section.
Fig. 2 (a) and Fig. 2 (b) is flexible frock of embodiment of the present invention structure and real border tool structure comparison diagram；With reference to
Fig. 2 (a) and Fig. 2 (b), The present invention gives embodiment flexible frock structure and real border Structure Comparison figure, flexible frock knots
Structure includes section 5 to be checked and flexible frock 6；Real border structure includes that band checks section 5 and real border section 7.Wait for school
2 meters of core section diameter, height 2.4 meters, 0.8 meter of flexible frock height, longitudinal stringer distribution angle be [14.67,16.81,
3.54,3.35,7.25,3.92,3.70,3.14,16.78], 2 meters of real border diameter, 2.4 meters of height, 0.6 meter of open height,
0.6 meter of opening width.
With reference to figure 3 (a) and Fig. 3 (b), the load for the flexible frock structural simulation that the present invention provides is distributed in real load point
Cloth is identical, and traditional uniform tooling and real load distribution are significantly different.This explanation, the invention enables the rigidity of flexible frock
Distribution is consistent with the Stiffness Distribution of real border, greatly improves the Path of Force Transfer of test fixture, and improves barrel shell structure and check in fact
The accuracy tested.
Claims (2)
1. a kind of position-variable flexible frock structure of stringer, which is characterized in that including under flexible frock upper end frame, flexible frock
Hold frame, flexible frock transverse direction stringer and flexible frock longitudinal direction stringer；Flexible frock transverse direction stringer is handed over flexible frock longitudinal direction stringer
Mistake distribution, forms grid type；Extend flexible frock upper end frame, flexible frock longitudinal direction stringer in the upper end of flexible frock longitudinal direction stringer
Lower end extend flexible frock lower end frame；
The flexible frock longitudinal direction stringer distribution determines, flexible frock longitudinal direction stringer according to experiment load distribution to be simulated
Distribution is variable, and the number of flexible frock longitudinal direction stringer is distributed according to experiment load to be simulated and is determined；
The flexible frock transverse direction stringer is axially uniformly distributed；
Cylindrical surface diameter is connected to it where the flexible frock transverse direction stringer and flexible frock longitudinal direction stringer waits for experiment portion
The diameter of section is identical.
2. the position-variable flexible frock structure of a kind of stringer according to claim 1, which is characterized in that the transverse direction
Stringer and longitudinal stringer are rectangular section.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610529077.7A CN105954092B (en) | 2016-07-06 | 2016-07-06 | A kind of position-variable flexible frock structure of stringer |
| PCT/CN2017/075460 WO2018006612A1 (en) | 2016-07-06 | 2017-03-02 | Flexible tooling structure with stringers having changeable positions |
| JP2018549802A JP6633225B2 (en) | 2016-07-06 | 2017-03-02 | Flexible tooling structure with changeable stringer position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610529077.7A CN105954092B (en) | 2016-07-06 | 2016-07-06 | A kind of position-variable flexible frock structure of stringer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105954092A CN105954092A (en) | 2016-09-21 |
| CN105954092B true CN105954092B (en) | 2018-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610529077.7A Active CN105954092B (en) | 2016-07-06 | 2016-07-06 | A kind of position-variable flexible frock structure of stringer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6633225B2 (en) |
| CN (1) | CN105954092B (en) |
| WO (1) | WO2018006612A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954092B (en) * | 2016-07-06 | 2018-07-13 | 大连理工大学 | A kind of position-variable flexible frock structure of stringer |
| CN112857762B (en) * | 2020-12-29 | 2023-05-23 | 中国航空工业集团公司西安飞机设计研究所 | Transition section for semi-ellipsoidal structural strength test |
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-
2017
- 2017-03-02 JP JP2018549802A patent/JP6633225B2/en active Active
- 2017-03-02 WO PCT/CN2017/075460 patent/WO2018006612A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2019515826A (en) | 2019-06-13 |
| JP6633225B2 (en) | 2020-01-22 |
| CN105954092A (en) | 2016-09-21 |
| WO2018006612A1 (en) | 2018-01-11 |
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