CN110469614A - A kind of shock loading slowing device and method based on marmem - Google Patents
A kind of shock loading slowing device and method based on marmem Download PDFInfo
- Publication number
- CN110469614A CN110469614A CN201910854528.8A CN201910854528A CN110469614A CN 110469614 A CN110469614 A CN 110469614A CN 201910854528 A CN201910854528 A CN 201910854528A CN 110469614 A CN110469614 A CN 110469614A
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- marmem
- connector
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- gasket
- rod
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/36—Bearings or like supports allowing movement
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a kind of shock loading slowing device based on marmem, including marmem gasket, marmem sleeve and connector, marmem sleeve are set between upper and lower connector to be damped；Connector includes nut and connecting rod, marmem gasket is for being set to upper connector, connecting rod is that a cap body is arranged in one end of the body of rod, the body of rod sequentially passes through upper connector, sleeve, lower connector and marmem gasket, and the other end threaded coupling nut of the body of rod, marmem gasket and marmem sleeve is set to be in martensitic traoformation limit stress state by tightening nut, a kind of shock loading alleviative method of shock loading slowing device based on above-mentioned based on marmem is also disclosed, the shock loading alleviative method both ensure that, the assembly of lower connector and connector does not loosen, it also reduces, shock and vibration between lower connector, and structure is simply quick detachable.
Description
Technical field
The present invention relates to buffer shock-absorbing technical fields, subtract more particularly to a kind of shock loading based on marmem
Buffering apparatus and method.
Background technique
Currently, due to the needs of industrial expansion and production, especially in the high-grade, precision and advanced national defence neck such as aerospace, naval vessel
There is higher requirement in domain to the vibration control of the precision and equipment of equipment.Now, although marmem is as vibration damping
Device has had numerous applications in structural vibration reduction field, however, application of these marmems in vibration and noise reducing field is big
Vibration damping only mostly is carried out using only the high damping of the super-elasticity of austenite shape memory alloy or martensitic shape memory alloy, and
The advantages of cannot fully playing in terms of Properties of Shape-Memory Alloys, and its structure is complicated mostly, disassembly is difficult.
Summary of the invention
The object of the present invention is to provide a kind of shock loading slowing device and method based on marmem, to solve
The above-mentioned problems of the prior art reduces the shock and vibration between upper connector and lower connector to be damped, and
So that upper connector and lower connector connect upper connector and lower connector while having higher stiffness and are based on shape memory
The assembly of the shock loading slowing device of alloy does not loosen, and structure disassembly simply easy to install.
To achieve the above object, the present invention provides following schemes:
The present invention provides a kind of shock loading slowing device based on marmem, including marmem pad
Piece, marmem sleeve and connector；
The marmem gasket and the marmem sleeve are with lower martensitic transformation temperature
Shape memory alloy material, the marmem sleeve for be set to upper connector to be damped and lower connector it
Between, upper connecting hole is preset on the upper connector, is corresponded to the upper connecting hole on the lower connector and is set connecting hole, and institute in advance
State connecting hole, the lower connecting hole and marmem sleeve coaxial arrangement；The connector includes nut and company
Extension bar, the marmem gasket is used to be set on the upper connector and, the company coaxial with the upper connecting hole
Extension bar includes the body of rod and cap body, and the cap body is fixedly installed on one end of the body of rod, and the body of rod sequentially passes through the upper company
Fitting, the sleeve, the lower connector and the marmem gasket, and the other end of the body of rod is stretched out and is connected
Part is simultaneously threadedly coupled the nut, by screwing the nut marmem gasket and the cap body is pressed respectively
Tightly on the upper surface of the upper connector and the lower surface of the lower connector and making the marmem gasket and institute
Stating marmem sleeve is the shape in the parent phase austenitic state with lesser martensitic traoformation limit stress
Memorial alloy.
Preferably, the body of rod and the marmem sleeve are clearance fit.
The present invention also provides a kind of shock loading slowing devices based on as described above based on marmem
Shock loading alleviative method, comprising the following steps:
Upper connecting hole and lower connecting hole, upper connector and lower company are opened up respectively in upper connector to be damped and lower connector
One marmem sleeve is set between fitting, and makes the upper connecting hole, the lower connecting hole and the shape memory
Alloy sleeve is coaxial, and the marmem gasket is placed on the upper connector and makes the marmem gasket
It is coaxial with the upper connecting hole, make the body of rod sequentially pass through the upper connector, the marmem sleeve, it is described under
Connector and the marmem gasket, and the body of rod stretches out upper connector without one end of the cap body, by the shape
Shape memory alloys gasket is sheathed on one end that the body of rod stretches out the upper connector, and the nut is screwed in the body of rod and is stretched out
One end of the upper connector screws the nut and the marmem gasket and the cap body is made to be pressed in institute respectively
It states on the upper surface of upper connector and the lower surface of lower connector and makes the marmem gasket and the shape memory
Alloy sleeve is the marmem in the parent phase austenitic state with lesser martensitic traoformation limit stress.
Preferably, in the upper connector upper surface and the lower connector lower surface and the marmem sleeve
The position being in contact opens up a upper counterbore and a lower counterbore respectively, and by the upper end of the marmem sleeve under
End is respectively arranged in the upper counterbore and the lower counterbore.
Preferably, shape, size phase of the shape, size of the upper counterbore with marmem sleeve upper surface
Together, the shape of the lower counterbore, size are identical as shape, the size of marmem sleeve lower end surface.
Preferably, the depth of the upper counterbore and the lower counterbore arrives for the 1/35 of the marmem length sleeve
1/25。
Preferably, the body of rod and the upper connector hole and lower connector aperture are clearance fit.
The present invention achieves following technical effect compared with the existing technology:
The present invention provides a kind of shock loading slowing device based on marmem, including marmem pad
Piece, marmem sleeve and connector；Make marmem gasket and marmem set by tightening nut
Cylinder is the marmem in the parent phase austenitic state with lesser martensitic traoformation limit stress, firstly, In
When the load that is not hit, the marmem sleeve and gasket for playing support upper connector and lower connector are in austenitic state
Have elastomeric characteristic, total static rigidity with higher；Secondly, when the shock loading being subject to reaches certain journey
After degree, stress in marmem is greater than phase transformation limit stress and stress induced martensite phase transformation occurs, stress almost
Biggish deformation is generated under conditions of remaining unchanged, and absorbs impact energy.But since pretightning force acts on lower material with lesser
Phase transformation limit stress can sufficiently slow down shock loading；Again, marmem gasket and marmem sleeve difference
The two sides of upper connector are set to, and have the function of pretightning force, the load that is hit causes shape memory when upper connector side
When alloy sleeve shortens, marmem gasket extends, on the contrary, when marmem gasket shortens, shape
Shape memory alloys sleeve elongation, thus between being not between upper and lower connector and marmem buffering isolation mounting
Gap；Finally, due to which marmem gasket and marmem sleeve always have one in superelastic, work as impact
After load, overall structure will automatically restore to original shape.Therefore the present invention, which has, is keeping upper connector and lower company
Upper connector and lower connector slow down with the shock loading based on marmem while fitting connection has higher stiffness
There is not the effect loosened in the assembly of device, and reduces the impact and vibration between upper connector and lower connector to be damped
It is dynamic, additionally it is possible to restPose automatically, structure is simply easy to install and remove.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is that the present invention is based on the companies of the shock loading slowing device of marmem and upper connector and lower connector
Binding structure；
Fig. 2 is in upper connector the present invention is based on the shock loading slowing device of marmem by shock and vibration
When course of work schematic diagram；
Fig. 3 is that the present invention is based on the schematic diagrams that the shock loading slowing device of marmem absorbs energy；
In figure: being connected under the 1- body of rod, 2- marmem gasket, 3- upper connector, 4- marmem sleeve, 5-
Part, 6- nut, 7- cap body.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of shock loading slowing device based on marmem, to solve existing skill
Art there are the problem of, so that upper connector to be damped is connected upper connector and lower company while having higher stiffness with lower connector
The assembly of fitting and the shock loading slowing device based on marmem does not loosen, and reduces to be damped upper
Shock and vibration between connector and lower connector, additionally it is possible to restPose automatically, structure is simply easily installed disassembly.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
The present invention provides a kind of shock loading slowing device based on marmem, as shown in Figure 1, including that shape is remembered
Recall alloy gasket 2, marmem sleeve 4 and connector；
Marmem gasket 2 and marmem sleeve 4 are all made of the shape with lower martensitic transformation temperature
Shape memory alloys material has reached marmem gasket 2 and marmem sleeve 4 at the working temperature in Ovshinsky
The effect of body state, has superelastic properties, and marmem sleeve 4 is used to be set to upper connector 3 to be damped under
Between connector 5, upper connecting hole is preset on upper connector 3, corresponding upper connecting hole sets connecting hole in advance on lower connector 5, and on
Connecting hole, lower connecting hole and marmem sleeve 4 are coaxially disposed；Connector includes nut 6 and connecting rod, and shape memory closes
For gold pad piece 2 for being set on upper connector and coaxial with upper connecting hole, connecting rod includes the body of rod 1 and cap body 7, and cap body 7 is fixed
It is set to one end of the body of rod 1, the body of rod 1 sequentially passes through upper connector 3, marmem sleeve 4, lower connector 5 and shape note
Recall alloy gasket 2, and the other end of the body of rod 1 stretches out upper connector 3 and threaded coupling nut 6, makes shape by tightening nut 6
Memorial alloy gasket 2 and cap body 7 are pressed on the upper surface of upper connector 3 and the lower surface of lower connector 5 respectively and make shape
Memorial alloy gasket 2 and marmem sleeve 4 are difficult to understand in the parent phase with lesser martensitic traoformation limit stress
The marmem of family name's body state.When not being hit load, the shape memory of support upper connector 3 and lower connector 5 is played
Alloy sleeve 4 and gasket 2 are in austenitic state and have elastomeric characteristic, total static rigidity with higher；Its
Secondary, after the shock loading being subject to reaches certain degree, the stress in marmem is greater than phase transformation limit stress and sends out
Raw stress induced martensite phase transformation, generates biggish deformation under conditions of stress is kept approximately constant, and absorbs impact energy.But
There is lesser phase transformation limit stress since pretightning force acts on lower material, can sufficiently slow down shock loading；Again, shape memory
Alloy gasket 2 and marmem sleeve 4 are respectively arranged at the two sides of upper connector 3, and have the function of pretightning force, when upper
3 side of connector be hit load cause marmem sleeve 4 shorten when, marmem gasket 2 extends, phase
Instead, when marmem gasket 2 shortens, marmem sleeve 4 extends, thus in upper connector 3, lower connection
It is not in gap between part 5 and marmem buffering isolation mounting；Finally, due to marmem gasket 2 and shape
Shape memory alloys sleeve 4 always has one in superelastic, and after shock loading, overall structure will be automatically restored to
Shape originally.Therefore the present invention has on while keeping upper connector 3 and the connection of lower connector 5 has higher stiffness and connects
There is not the effect loosened in the assembly of fitting 3 and lower connector 5 and the shock loading slowing device based on marmem, and
And reduce the shock and vibration between upper connector 3 and lower connector 5 to be damped, additionally it is possible to it restPoses automatically,
Structure is simply easy to install and remove.And since shape memory alloy material has the performance of excellent resistance three-dimensional vibrating, institute
Upper connector 3, lower connector 5 and connection can also be efficiently controlled with the shock loading slowing device based on marmem
Three-dimensional vibrating between device.
Further, as shown in Figure 1, the body of rod 1 and marmem sleeve 4 are clearance fit, the big rootlet of gap width
It is determined according to the radial difference of the marmem sleeve 4 under the elongation limit or shortening limiting condition.
The present invention also provides a kind of shock loading slowing devices based on as described above based on marmem
Shock loading alleviative method, comprising the following steps:
As shown in Figure 1, upper connecting hole and lower connecting hole are opened up respectively in upper connector 3 to be damped and lower connector 5, on
One marmem sleeve 4 is set between connector 3 and lower connector 5, and makes connecting hole, lower connecting hole and shape note
It is coaxial to recall alloy sleeve 4, marmem gasket 2 is placed on upper connector 3 and makes marmem gasket 2 and upper company
It is coaxial to connect hole, the body of rod 1 is made to sequentially pass through upper connector 3, marmem sleeve 4, lower connector 5 and marmem pad
Piece 2, and the body of rod 1 stretches out upper connector 3 without one end of cap body 7, and marmem gasket 2 is sheathed in the stretching of the body of rod 1 and is connected
Nut 6 is screwed in one end that the body of rod 1 stretches out upper connector 3 by one end of fitting 3, and tightening nut 6 makes marmem gasket
2 and cap body 7 be pressed on the upper surface of upper connector 3 and the lower surface of lower connector 5 respectively and make marmem gasket 2
It is the shape in the parent phase austenitic state with lesser martensitic traoformation limit stress with marmem sleeve 4
Memorial alloy；
Shock loading slowing device based on marmem be mainly utilized marmem nonlinear characteristic,
Stiffness variation characteristic and super-elasticity carry out buffer shock-absorbing to upper connector 3 and lower connector 5, when assembly, marmem pad
Piece 2 and marmem sleeve 4 are in the limit stress state of martensitic traoformation, while guaranteeing shape after discharge degree
Complete reverse transformation can occur for memorial alloy gasket 2 and marmem sleeve 4, i.e. guarantee 2 He of marmem gasket
Marmem sleeve 4 is returned to the original form by superelastic phenomena can occur after shock and vibration；
As shown in a and b in Fig. 2, when upper connector 3 is by shock and vibration, what marmem sleeve 4 was subject to is answered
Power is more than certain value, and marmem sleeve 4 starts martensitic traoformation, and length becomes smaller and stress is slightly increased, but can be with
Effectively absorb impact energy；Meanwhile the stress that is subject to of marmem gasket 2 becomes smaller and still in austenite phase, occur and
The same linear deformation length of traditional material, the length of marmem gasket 2 make entire connection system always
To be interference fitted without there is gap；
As shown in a and c in Fig. 2, when upper connector 3 is by reverse impact, stress that marmem gasket 2 is subject to
When more than certain value, marmem gasket 2 starts martensitic traoformation, and length becomes smaller stress and stress is slightly increased, but
Impact energy can effectively be absorbed；Meanwhile the stress that marmem sleeve 4 is subject to becomes smaller and still in austenite phase, hair
The raw linear deformation length as traditional material, the length of marmem sleeve 4 make entire connection system
It is always interference fit without there is gap.
Further, as shown in Figure 1, in 3 upper surface of upper connector and lower 5 lower surface of connector and marmem set
The position that cylinder 4 is in contact opens up a upper counterbore and a lower counterbore respectively, and by the upper end of marmem sleeve 4 under
End is respectively arranged in counterbore and lower counterbore, and upper counterbore and lower counterbore play positioning action to marmem sleeve 4.
Further, as shown in Figure 1, the shape of upper counterbore, the shape of 4 upper surface of size and shape memorial alloy sleeve,
Size is identical, and shape, shape, the size of 4 lower end surface of size and shape memorial alloy sleeve of lower counterbore are identical, and upper counterbore is under
Hole wall and 4 outer wall of marmem the sleeve tight fit of counterbore play the role of fine positioning to marmem sleeve 4,
And it is compact-sized.
Further, as shown in Figure 1, the depth of upper counterbore and lower counterbore is the 1/35 of 4 length of marmem sleeve
To 1/25.
Further, as shown in Figure 1, the body of rod 1 and upper connector hole and lower connector aperture are clearance fit.
Fig. 3 is the schematic diagram that the shock loading slowing device of the invention based on marmem absorbs energy, this hair
The bright marmem used is the marmem with thermoelastic martensitic transformation, through stress deformation strain induced martensite
After stress removal reverse transformation occurs for phase transformation, and the macroscopic deformation generated under stress also disappears therewith, to generate and pass
Commons material compares much bigger recoverable deformation, referred to as super-elasticity.As seen from Figure 3, the super-elasticity of marmem makes
Marmem has the characteristic for absorbing energy, and area under the curve is bigger, and the energy absorbed is more, therefore, is based on
The shock loading slowing device of marmem can absorb energy when by foreign impacts and vibration, reduce upper connector and
Shock and vibration between lower connector.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (8)
1. a kind of shock loading slowing device based on marmem, it is characterised in that: including marmem gasket,
Marmem sleeve and connector, the marmem gasket and the marmem sleeve be have compared with
The shape memory alloy material of low martensitic phase transition temperature, the marmem sleeve is for being set to upper company to be damped
Upper connecting hole is preset between fitting and lower connector, on the upper connector, corresponds to the upper connecting hole on the lower connector
Connecting hole, and the upper connecting hole, the lower connecting hole and marmem sleeve coaxial arrangement are set in advance；The company
Connecing device includes nut and connecting rod, the marmem gasket for be set on the upper connector and with the upper company
It is coaxial to connect hole, the connecting rod includes the body of rod and cap body, and the cap body is fixedly installed on one end of the body of rod, the body of rod according to
It is secondary to pass through the upper connector, the sleeve, the lower connector and the marmem gasket, and the body of rod is another
One end stretches out upper connector and is simultaneously threadedly coupled the nut, by screw the nut make the marmem gasket and
The cap body is pressed on the upper surface of the upper connector and the lower surface of the lower connector respectively and remembers the shape
Recall alloy gasket and the marmem sleeve is difficult to understand in the parent phase with lesser martensitic traoformation limit stress
The marmem of family name's body state.
2. the shock loading slowing device according to claim 1 based on marmem, it is characterised in that: the bar
Body and the marmem sleeve are clearance fit.
3. the shock loading slowing device according to claim 1 based on marmem, it is characterised in that: the bar
Body and the marmem gasket are clearance fit.
4. a kind of shock loading slowing device based on according to any one of claims 1 to 3 based on marmem
Shock loading alleviative method, comprising the following steps:
Upper connecting hole and lower connecting hole, upper connector and lower connector are opened up respectively in upper connector to be damped and lower connector
Between a marmem sleeve is set, and make the upper connecting hole, the lower connecting hole and the marmem
Sleeve is coaxial, and the marmem gasket is placed on the upper connector and makes the marmem gasket and institute
It is coaxial to state connecting hole, the body of rod is made to sequentially pass through the upper connector, the marmem sleeve, the lower connection
Part and the marmem gasket, and the body of rod stretches out upper connector without one end of the cap body, and the shape is remembered
Recall alloy gasket and be sheathed on one end that the body of rod stretches out the upper connector, the nut is screwed in described in the body of rod stretching
One end of upper connector screws the nut and the marmem gasket and the cap body is pressed on described respectively
On the upper surface of connector and the lower surface of lower connector and make the marmem gasket and the marmem
Sleeve is the marmem in the parent phase austenitic state with lesser martensitic traoformation limit stress.
5. shock loading alleviative method according to claim 4, it is characterised in that: in the upper connector upper surface and institute
The position that lower connector lower surface is in contact with the marmem sleeve is stated to open up respectively under upper a counterbore and one
Counterbore, and the top and bottom of the marmem sleeve are respectively arranged in the upper counterbore and the lower counterbore.
6. shock loading alleviative method according to claim 5, it is characterised in that: the shape of the upper counterbore, size with
Shape, the size of marmem sleeve upper surface are identical, shape, size and the shape memory of the lower counterbore
Shape, the size of alloy sleeve lower end surface are identical.
7. shock loading alleviative method according to claim 5, it is characterised in that: the upper counterbore and the lower counterbore
Depth is 1/35 to the 1/25 of the marmem length sleeve.
8. shock loading alleviative method according to claim 4, it is characterised in that: the body of rod and the upper connector hole
It is clearance fit with lower connector aperture.
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| CN201910854528.8A CN110469614B (en) | 2019-09-10 | 2019-09-10 | Impact load relieving device and method based on shape memory alloy |
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| CN201910854528.8A CN110469614B (en) | 2019-09-10 | 2019-09-10 | Impact load relieving device and method based on shape memory alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112322954A (en) * | 2020-11-03 | 2021-02-05 | 西北工业大学 | Airplane wallboard assembly clearance compensation shape memory alloy gasket and preparation and assembly methods thereof |
| CN115539543A (en) * | 2022-08-31 | 2022-12-30 | 电子科技大学 | Vibration reduction buffer based on NiTi shape memory alloy |
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| CN209278314U (en) * | 2018-11-15 | 2019-08-20 | 西南交通大学 | A kind of subassembly of lock bolt |
| CN110083123A (en) * | 2019-03-11 | 2019-08-02 | 西安交通大学 | A kind of assembly connection load intelligent control method based on marmem |
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| CN115539543A (en) * | 2022-08-31 | 2022-12-30 | 电子科技大学 | Vibration reduction buffer based on NiTi shape memory alloy |
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