CN109297821A - A kind of simulation is compressed axially stiffened panel experimental rig - Google Patents
A kind of simulation is compressed axially stiffened panel experimental rig Download PDFInfo
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- CN109297821A CN109297821A CN201811472844.0A CN201811472844A CN109297821A CN 109297821 A CN109297821 A CN 109297821A CN 201811472844 A CN201811472844 A CN 201811472844A CN 109297821 A CN109297821 A CN 109297821A
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- slideway
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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
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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
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Abstract
The present invention relates to thin wall reinforced structure strength test technical fields, refer specifically to a kind of simulate and are compressed axially stiffened panel experimental rig；Including left stringer, right vertical beam, front beam, rear cross beam, MTS four-way load machine and test specimen, the left stringer and right vertical beam are parallel to each other and be spaceds setting, and the both ends of front beam and rear cross beam are separately connected left stringer and right vertical beam thus the loading frame being integrally formed；The MTS four-way load machine and test specimen are set in loading frame, and MTS four-way load machine is fixedly connected with front beam, and test specimen is fixedly connected with rear cross beam；The two sides of the test specimen are equipped with square steel, and square steel is equipped with the fixture of clamping test pieces；Structure of the invention is reasonable, axial compression test suitable for various sizes of stiffened panel, simple boundary condition applied to be to current loading scheme is a kind of supplement well to the long side for being compressed axially stiffened panel, simulation it can be compressed axially the long side simple boundary condition of stiffened panel very well, improve test accuracy and efficiency.
Description
Technical field
The present invention relates to thin wall reinforced structure strength test technical fields, refer specifically to a kind of simulate and are compressed axially stiffened panel examination
Experiment device.
Background technique
World today's shipbuilding industry is increasingly flourishing, but inevitably also have due to Ship Structure destroy fracture and lead to material damage very
To the bad news of casualties, so whether civil field or military domain, hull structural strength be always colleges and universities and
The popular problem that scientific research institutions are studied.The buckling and ultimate strength of ship hull plate and stiffened panel are the weights of hull structural strength design
Content is wanted, the failure of reinforcement board shaft lateral deflection song is one of most important inducement of hull beam complete buckling failure again, therefore to axis ballast
The assessment of the buckling and ultimate strength of the panel between reinforcing rib under lotus is extremely important.
The thin-wall box beam structure that hull is made of several stiffened panels is directed to the buckling and ultimate strength of hull, section
Grinding personnel is usually to extract hull beam deck, is studied as individual stiffened panel it.And for stiffened panel
The research of buckling and ultimate strength, one of the methods is using the method for being compressed axially application load, at present described in document
Stiffened panel axial compression test is substantially and does not apply any constraint to long side, this is very not for the simulation of actual boundary condition
Accurately, and tooling is also relatively single, and applicability is not high.More accurate method is to take the short side of stiffened panel clamped, length
While taking the boundary condition of freely-supported, this is the buckling and the limit come using most simplification methods in current engineering to Ship Structure
Intensity is studied.The failure procedure of reinforcement board shaft lateral deflection song, includes the coupled problem of geometrical non-linearity and material nonlinearity,
Although at this stage finite element method can obtain it is more accurate as a result, but after all or a black box, we are to two
It is very clear that the nonlinear coupling influence of kind is not yet accomplished, so needing certain theoretical by verification experimental verification or guessing.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a set of to being compressed axially stiffened panel
Long side applies simple boundary condition, and the simulation that short side applies fixed-end boundary condition is compressed axially stiffened panel experimental rig, effectively solves
The problems such as boundary condition imitation is inaccurate, experimental rig versatility is not high, test efficiency is low in stiffened plates under axial compression of having determined test.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of simulation of the present invention is compressed axially stiffened panel experimental rig, including left stringer, right vertical beam, front beam,
Rear cross beam, MTS four-way load machine and test specimen, the left stringer and right vertical beam are parallel to each other and are spaced setting, and front beam is with after
The both ends of crossbeam are separately connected the loading frame of left stringer and right vertical beam to be integrally formed；MTS four-way load machine and
Test specimen is set in loading frame, and MTS four-way load machine is fixedly connected with front beam, and test specimen is fixedly connected with rear cross beam；It is described
The two sides of test specimen are equipped with square steel, and square steel is equipped with the fixture of clamping test pieces.
According to above scheme, the left stringer and right vertical beam are fixed on the ground, and left stringer and right vertical beam pass through jack
The relative altitude between its both ends and ground is adjusted, keeps its parallel to the ground to level loading frame.
According to above scheme, geosyncline is offered on the ground in the loading frame, is equipped with left slideway and right cunning in geosyncline
Road, left slideway and right slideway are bolted on geosyncline；It is equipped with several fixation holes on the left slideway and right slideway, tries
The square steel of part two sides is separately positioned on left slideway and right slideway, and two square steel are connected to the left slideway by bolt
On the fixation hole of right slideway.
According to above scheme, several fixation holes are accordingly equipped on the left stringer and right vertical beam, several fixation holes are along vertical
To being successively spaced apart, front beam and rear cross beam are arranged in parallel, and the both ends of front beam and rear cross beam are distinguished by bolt
It is connected on the fixation hole of the left stringer and right vertical beam.
According to above scheme, the fixture includes ceiling molding and lower press strip, and ceiling molding and lower press strip are clamped in test specimen respectively
On the top and bottom of side, and ceiling molding and lower press strip are bolted to connection on square steel.
The invention has the following beneficial effects: structure of the invention is reasonable, suitable for the axial compression test of various sizes of stiffened panel, to axis
Apply simple boundary condition to be to current loading scheme be a kind of supplement well to the long side of compression stiffened panel, can both be directed to
A series of test specimen of sizes, and simulation it can be compressed axially the long side simple boundary condition of stiffened panel very well, it is applied widely,
Experimentation cost is reduced, test accuracy and efficiency are improved.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is square steel and holder part enlarged structure schematic diagram of the invention；
Fig. 3 is overlooking structure diagram of the invention.
In figure:
1, loading frame；2, MTS four-way loads machine；3, test specimen；4, square steel；11, left stringer；12, right vertical beam；21, preceding
Crossbeam；22, rear cross beam；41, fixture；42, left slideway；43, right slideway；44, ceiling molding；45, lower press strip.
Specific embodiment
Technical solution of the present invention is illustrated with embodiment with reference to the accompanying drawing.
As shown in Figure 1, a kind of simulation of the present invention is compressed axially stiffened panel experimental rig, including left stringer 11, the right side
Stringer 12, front beam 21, rear cross beam 22, MTS four-way load machine 2 and test specimen 3, the left stringer 11 and right vertical beam 12 are mutually flat
Row and interval setting, the both ends of front beam 21 and rear cross beam 22 are separately connected left stringer 11 and right vertical beam 12 to be integrally formed
Loading frame 1；The MTS four-way load machine 2 and test specimen 3 are set in loading frame 1, and MTS four-way loads machine 2 and front beam
21 are fixedly connected, and test specimen 3 is fixedly connected with rear cross beam 22；The two sides of the test specimen 3 are equipped with square steel 4, and square steel 4 is equipped with clamping
The fixture 41 of test specimen 3；The front beam 21 and rear cross beam 22 can adjust the size of loading frame 1, test specimen according to the specification of test specimen 3
Front beam 21 and rear cross beam 22 are moved to suitable position after determining and are consolidated again with left stringer 11, right vertical beam 12 by bolt by 3 sizes
Fixed connection；MTS four-way loads machine 2 by front beam 21 and 1 integrally connected of loading frame thus with ground keeping parallelism, MTS
Four-way load machine 2 is used to load load required for stiffened plates under axial compression is tested, and the loading method of MTS four-way load machine 2 has
Load control load and Bit andits control load；The test specimen 3 and rear cross beam 22 are fixedly connected with the clamped side that ensure that stiffened panel
Boundary's condition；And square steel 4 clamps the long side of test specimen 3 by fixture 41, and forms line with its long side and contact to simulate axis pressure reinforcement
The simple boundary condition of plate long side.
The left stringer 11 and right vertical beam 12 fix on the ground, and left stringer 11 and right vertical beam 12 adjust it by jack
Relative altitude between both ends and ground keeps its parallel to the ground to level loading frame 1；The leveling of the loading frame 1
Loading direction for controlling itself and MTS four-way load machine 2 is set, is loaded onto axial compressive force horizontal axis on test specimen 3 and protects
The accuracy of confirmatory test.
Geosyncline is offered on ground in the loading frame 1, is equipped with left slideway 42 and right slideway 43, left slideway in geosyncline
42 and right slideway 43 be bolted on geosyncline；It is equipped with several fixation holes on the left slideway 42 and right slideway 43, tries
The square steel 4 of 3 two sides of part is separately positioned on left slideway 42 and right slideway 43, and two square steel 4 are connected to institute by bolt
On the fixation hole for stating left slideway 42 and right slideway 43；As shown in Fig. 2, square steel 4 can be along left slideway 42 and right slideway 43 by T-slot
Adjusting is slid left and right, to be fixed again with bolt after determining final position according to 3 size of test specimen, to meet various rule
The test requirements document of the stiffener of lattice reduces experimentation cost investment.
Several fixation holes are accordingly equipped on the left stringer 11 and right vertical beam 12, several fixation holes are successively spaced along longitudinal direction
Distribution, front beam 21 and rear cross beam 22 are arranged in parallel, and the both ends of front beam 21 and rear cross beam 22 are connected respectively by bolt
It connects on the fixation hole of the left stringer 11 and right vertical beam 12, front beam 21 and rear cross beam 22 can adjust it on stringer along longitudinal direction
Position, thus according to 3 specification of test specimen construct loading frame 1 size, meet the test request of various specifications test specimen 3, reduce
Experimentation cost.
The fixture 41 includes ceiling molding 44 and lower press strip 45, and ceiling molding 44 and lower press strip 45 are clamped in 3 side of test specimen respectively
On the top and bottom on side, and ceiling molding 44 and lower press strip 45 are bolted to connection on square steel 4；Ceiling molding 44 and lower press strip 45
The long side of reinforcement board ends is clamped respectively, forms line contact, accurately simulates the boundary condition of axis pressure test specimen long side freely-supported, axis
Pressure stiffened panel test can be carried out accurately.
The present invention is suitable for the axial compression test of various sizes of stiffened panel, and applies letter to the long side for being compressed axially stiffened panel
It is a kind of supplement well that branch boundary condition, which is even more to current loading scheme,；And this method is also to apply in current engineering
Most simplification methods come to Ship Structure buckling and ultimate strength study.Therefore, it designs a set of to being compressed axially
The long side of stiffened panel applies the device of simple boundary condition, can not only be directed to a series of test specimen of sizes, but also can mould well
The quasi- long side simple boundary condition for being compressed axially stiffened panel, it is applied widely, experimentation cost is reduced, test accuracy and effect are improved
Rate.
The above description is only a preferred embodiment of the present invention, thus it is all according to the configuration described in the scope of the patent application of the present invention,
The equivalent change or modification that feature and principle are done, is included in the scope of the patent application of the present invention.
Claims (5)
1. a kind of simulation is compressed axially stiffened panel experimental rig, including left stringer (11), right vertical beam (12), front beam (21), after
Crossbeam (22), MTS four-way load machine (2) and test specimen (3), it is characterised in that: the left stringer (11) and right vertical beam (12) phase
The both ends of mutually parallel and interval setting, front beam (21) and rear cross beam (22) be separately connected left stringer (11) and right vertical beam (12) from
And the loading frame (1) being integrally formed；MTS four-way load machine (2) and test specimen (3) are set in loading frame (1), MTS
Four-way load machine (2) is fixedly connected with front beam (21), and test specimen (3) is fixedly connected with rear cross beam (22)；The test specimen (3)
Two sides are equipped with square steel (4), and square steel (4) is equipped with the fixture (41) of clamping test pieces (3).
2. simulation according to claim 1 is compressed axially stiffened panel experimental rig, it is characterised in that: the left stringer (11)
It is fixed on the ground with right vertical beam (12), left stringer (11) and right vertical beam (12) are adjusted between its both ends and ground by jack
Relative altitude, keep its parallel to the ground to level loading frame (1).
3. simulation according to claim 2 is compressed axially stiffened panel experimental rig, it is characterised in that: the loading frame
(1) geosyncline is offered on the ground in, is equipped with left slideway (42) and right slideway (43), left slideway (42) and right slideway in geosyncline
(43) it is bolted on geosyncline；Several fixation holes, test specimen (3) are equipped on the left slideway (42) and right slideway (43)
The square steel (4) of two sides is separately positioned on left slideway (42) and right slideway (43), and two square steel (4) are separately connected by bolt
On the fixation hole of the left slideway (42) and right slideway (43).
4. simulation according to claim 1 is compressed axially stiffened panel experimental rig, it is characterised in that: the left stringer (11)
With several fixation holes are accordingly equipped on right vertical beam (12), several fixation holes are successively spaced apart along longitudinal direction, front beam (21) and
Rear cross beam (22) is arranged in parallel, and the both ends of front beam (21) and rear cross beam (22) are connected to the left side by bolt
On the fixation hole of stringer (11) and right vertical beam (12).
5. simulation according to claim 1 is compressed axially stiffened panel experimental rig, it is characterised in that: fixture (41) packet
Ceiling molding (44) and lower press strip (45) are included, ceiling molding (44) and lower press strip (45) are clamped in the top and bottom of test specimen (3) side respectively
On, and ceiling molding (44) and lower press strip (45) are bolted to connection on square steel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811472844.0A CN109297821B (en) | 2018-12-04 | 2018-12-04 | Axial compression simulated stiffened plate test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811472844.0A CN109297821B (en) | 2018-12-04 | 2018-12-04 | Axial compression simulated stiffened plate test device |
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| Publication Number | Publication Date |
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| CN109297821A true CN109297821A (en) | 2019-02-01 |
| CN109297821B CN109297821B (en) | 2021-05-04 |
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| CN201811472844.0A Active CN109297821B (en) | 2018-12-04 | 2018-12-04 | Axial compression simulated stiffened plate test device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455633A (en) * | 2019-08-13 | 2019-11-15 | 武汉理工大学 | Composite panel compression test tooling |
| CN110779792A (en) * | 2019-12-11 | 2020-02-11 | 哈尔滨理工大学 | A fixture for grid stiffened plate impact test |
| CN110852012A (en) * | 2019-11-11 | 2020-02-28 | 武汉理工大学 | Method for predicting ultimate strength of axial-compression stiffened plate |
| CN112730059A (en) * | 2020-12-22 | 2021-04-30 | 南京航空航天大学 | Axial pressure test device and method for stiffened plate with typical structure of airplane |
| CN113933165A (en) * | 2021-09-13 | 2022-01-14 | 中山大学 | Double-shaft loading test device for composite material honeycomb sandwich structure |
| CN114383829A (en) * | 2021-12-15 | 2022-04-22 | 江苏科技大学 | Ultimate strength test device of key node structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455633A (en) * | 2019-08-13 | 2019-11-15 | 武汉理工大学 | Composite panel compression test tooling |
| CN110852012A (en) * | 2019-11-11 | 2020-02-28 | 武汉理工大学 | Method for predicting ultimate strength of axial-compression stiffened plate |
| CN110779792A (en) * | 2019-12-11 | 2020-02-11 | 哈尔滨理工大学 | A fixture for grid stiffened plate impact test |
| CN112730059A (en) * | 2020-12-22 | 2021-04-30 | 南京航空航天大学 | Axial pressure test device and method for stiffened plate with typical structure of airplane |
| CN113933165A (en) * | 2021-09-13 | 2022-01-14 | 中山大学 | Double-shaft loading test device for composite material honeycomb sandwich structure |
| CN114383829A (en) * | 2021-12-15 | 2022-04-22 | 江苏科技大学 | Ultimate strength test device of key node structure |
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| CN109297821B (en) | 2021-05-04 |
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