CN108397684A - Double stiffness structures - Google Patents
Double stiffness structures Download PDFInfo
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- CN108397684A CN108397684A CN201810181713.0A CN201810181713A CN108397684A CN 108397684 A CN108397684 A CN 108397684A CN 201810181713 A CN201810181713 A CN 201810181713A CN 108397684 A CN108397684 A CN 108397684A
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- Prior art keywords
- connecting rod
- scissors connecting
- rhomb form
- central
- rigidity
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- 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
- F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
- F16S3/00—Elongated members, e.g. profiled members; Assemblies thereof; Gratings or grilles
- F16S3/06—Assemblies of elongated members
- F16S3/08—Assemblies of elongated members forming frameworks, e.g. gratings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
- Manipulator (AREA)
Abstract
A kind of double rigidity intelligence structures, are made of several structural units, and each structural unit includes：Two central scissors connecting rod assemblies being rotatablely connected with one heart and several peripheral link in rhomb form combinations, wherein：It is flexibly connected by torsional spring between two central scissors connecting rod assemblies, the branches end of each center scissors connecting rod assembly is rotatablely connected with the end node that a peripheral link in rhomb form combine, and other two opposite end node of peripheral link in rhomb form combination end node that the peripheral link in rhomb form adjacent with both sides combines respectively is rotatablely connected.Present invention tool is there are two types of deformation pattern and different rigidity is shown in both of which.
Description
Technical field
The present invention relates to a kind of technology in material structure field, specifically a kind of double stiffness structures.
Background technology
The rigidity of material is its mostly important one of characteristic, reflects deformation extent of certain material under load effect.
It is also different to the rigidity size requirements of material due to application field difference.Such as in foundation construction field, it is generally desirable to materials to have
Higher intensity avoids building collapse to minimize deformation when bearing larger load；And in fields such as damping, bufferings,
Then wish that there is material smaller rigidity, larger deformation the kinetic energy of target to be converted to the deformation energy of material, enhancing subtracts
Shake, the effect buffered.
However in some cases, since the variation range of load is larger, the material with single rigidity just will appear pair
Smaller load change insensitive (the larger material of rigidity) or (rigidity smaller material the case where be destroyed under larger load
Material).
Invention content
The present invention can not provide asking for suitable deformation for existing single rigid material in face of large-scale load change
Topic proposes a kind of double rigidity intelligence structures, and tool is there are two types of deformation pattern and different rigidity is shown in both of which.
The present invention is achieved by the following technical solutions：
The present invention relates to a kind of double rigidity intelligence structures, are made of several structural units, and each structural unit includes：Two
The central scissors connecting rod assembly being rotatablely connected with one heart and several peripheral link in rhomb form combinations, wherein：Two central scissors connect
It is flexibly connected by torsional spring between bar combination, the branches end of each center scissors connecting rod assembly connects with a peripheral diamond shape
The end node rotation connection of bar combination, other two of peripheral link in rhomb form combination are adjacent with both sides respectively with respect to end node
Peripheral link in rhomb form combination end node rotation connection.
The central scissors connecting rod assembly includes：The central scissors that three or more one end are fixedly connected by central hinge
Connecting rod, each branch center scissors connecting rod are uniformly distributed centered on central hinge.
The peripheral link in rhomb form combination includes four peripheral link in rhomb form endings rotation connection composition successively.
4th end node of the peripheral link in rhomb form combination is for the periphery with another adjacent structural unit
Link in rhomb form combination rotation connection is not connected with any node.
The stiffness coefficient all same of torsional spring in all structural units and be fixed value k.
Number, the shape that number of nodes, the branch's number of the central scissors connecting rod assembly are combined with peripheral link in rhomb form are full
Foot：When the number of branches of central scissors connecting rod assembly is n, then its interstitial content is n+1, and the quantity of peripheral link in rhomb form combination is
2n, for the shape of peripheral link in rhomb form combination by the angle-determining of one interior angle, size is 2 π/n.
The arrangement mode of the structural unit is along horizontal, vertical direction arrangement, and the distance of adjacent Unit two is respectively
The width of its structural unit, height.
Technique effect
Compared with prior art, the present invention has this spy of different rigidity using above structure under different motion pattern
Property, by changing the position of the point of load, required motor pattern and its rigidity of structure can be independently selected, to realize not
Change the function of rigidity under same load.Further, according to we provide load-displacement curves, can also calculate to
Determine the malformation degree under load, i.e. the strain size of the intelligence structure.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
In figure：A~d is MS-6, MS-8, MS-10, MS-12；
Fig. 2 is the motor pattern schematic diagram of the present invention；
Fig. 3 is the relational graph of the load position and motor pattern of the present invention；
Fig. 4 is the load-displacement curves figure of the present invention；
Fig. 5 is the tiling schematic diagram of the present invention；
In figure：A~d is MS-6, MS-8, MS-10, MS-12；
In figure：1 is MS-6 (Motion structures with 6-fold rotational symmetry, with six
The movable structure of fold rotational symmetry) peripheral link in rhomb form, 2 be the centers MS-6 scissors connecting rod, 3 be MS-6 torsional springs, 4 be
MS-8 (Motion structures with 8-fold rotational symmetry, with eightfold rotational symmetry can
Dynamic structure) peripheral link in rhomb form, 5 be the centers MS-8 scissors connecting rod, 6 be MS-8 torsional springs, 7 be MS-10 (Motion
Structures with 10-fold rotational symmetry, the movable structure with ten fold rotational symmetry) periphery
Link in rhomb form, 8 be the centers MS-10 scissors connecting rod, 9 be MS-10 torsional springs, 10 be MS-12 (Motion structures
With 12-fold rotational symmetry, the movable structure with ten double rotational symmetries) periphery link in rhomb form,
11 it is the centers MS-12 scissors connecting rod, 12 is MS-12 torsional springs.
Specific implementation mode
As shown in Figure 1, for four kinds of the present invention double rigidity intelligence structures, respectively sixfold rotational symmetry is movably tied
Structure MS-6, eightfold rotational symmetry movable structure MS-8, ten fold rotational symmetry movable structure MS-10,12 fold rotational symmetry
Property movable structure MS-12.
As shown in Figure 1a, it is a structural unit of the bis- rigidity intelligence structures of MS-6, wherein different parts is with different
Line style indicates comprising six combinations of the peripheries MS-6 link in rhomb form 1, two 2 groups of (solid line and dotted line) centers MS-6 scissors connecting rods
It closes, a MS-6 torsional spring 3；As shown in dashed rectangle in Fig. 1 a, there are four sections for the combination of each peripheries MS-6 link in rhomb form 1 tool
Point, there are three branch and four nodes, two centers MS-6 scissors connecting rods 2 to combine for each combination of the centers MS-6 scissors connecting rod 2 tool
It is rotated connection by central hinge, the branch that each centers MS-6 scissors connecting rod 2 combines and the peripheries a MS-6 link in rhomb form 1
Combination rotation connection, the combination of each peripheries MS-6 link in rhomb form 1 are combined rotation with two adjacent peripheries MS-6 link in rhomb form 1 and are connected
It connects.MS-6 torsional springs 3 are set at central hinge.
As shown in Figure 1 b, it is a structural unit of the bis- rigidity intelligence structures of MS-8 comprising eight peripheries MS-8 diamond shapes
The combination of connecting rod 4, two combinations of the centers MS-8 scissors connecting rod 5, a MS-8 torsional springs 6, as shown in dashed rectangle in Fig. 1.Often
There are four nodes for the combination of a peripheries MS-8 link in rhomb form 4 tool, and there are four branch and five for each combination of the centers MS-8 scissors connecting rod 5 tool
A node.The combination of two centers MS-8 scissors connecting rods 5 is rotated connection by central hinge, each centers MS-8 scissors connecting rod 5
The branch of combination combines the connection that rotates with the peripheries a MS-8 link in rhomb form 4, the combination of each peripheries MS-8 link in rhomb form 4 also with
Two adjacent peripheries MS-8 link in rhomb form 4 combines the connection that rotates.MS-8 torsional springs 6 are set at central hinge.
As illustrated in figure 1 c, it is a structural unit of the bis- rigidity intelligence structures of MS-10 comprising ten peripheries MS-10 water chestnuts
The combination of shape connecting rod 7, two combinations of the centers MS-10 scissors connecting rod 8, a MS-10 torsional springs 9, such as dashed rectangle institute in Fig. 1
Show.Each peripheries MS-10 link in rhomb form 7 combines tool, and there are four nodes, and there are five each combination of the centers MS-10 scissors connecting rod 8 tools
Branch and six nodes.The combination of two centers MS-10 scissors connecting rods 8 is rotated connection by central hinge, and each MS-10 is central
The branch that scissors connecting rod 8 combines combines the connection that rotates with the peripheries a MS-10 link in rhomb form 7, and each peripheries MS-10 diamond shape connects
The combination of bar 7 also combines the connection that rotates with two adjacent peripheries MS-10 link in rhomb form 7.During MS-10 torsional springs 9 are set to
It entreats at hinge.
As shown in Figure 1 d, it is a structural unit of the bis- rigidity intelligence structures of MS-12 comprising 12 peripheries MS-12
The combination of link in rhomb form 10, two combinations of the centers MS-12 scissors connecting rod 11, a MS-12 torsional springs 10, such as dotted line side in Fig. 1
Shown in frame.Each peripheries MS-12 link in rhomb form 10 combines tool, and there are four node, each combination of the centers MS-12 scissors connecting rod 11 tools
There are six branch and seven nodes.The combination of two centers MS-12 scissors connecting rods 11 is rotated connection by central hinge, each
The branch that the centers MS-12 scissors connecting rod 11 combines combines the connection that rotates, each MS- with the peripheries a MS-12 link in rhomb form 10
The 12 peripheral combinations of link in rhomb form 10 also combine the connection that rotates with two adjacent peripheries MS-12 link in rhomb form 10.MS-12 rotates
Spring 12 is set at central hinge.
As shown in Fig. 2, in the initial state, six branches of two centers MS-6 scissors connecting rods 2 combination are around central hinge
It is uniformly distributed, and MS-6 torsional springs 3 at this time are in former long status.Under certain load effect, there are two types of fortune for MS-6 tools
Dynamic model formula：Pattern 1, pattern 2, as shown in Fig. 2 left columns, right column.Similarly, in the initial state, in MS-8, MS-10, MS-12
It is also equally distributed around central hinge to entreat each branch of scissors connecting rod assembly, and its corresponding torsional spring is in former length
State.
As shown in figure 3, different according to the position of the point of load, MS-6, MS-8, MS-10, MS-12 (being referred to as MS-N) can be with
It is converted between two kinds of motor patterns.For vertical load, when the point of load R points with it is left when, MS-N shows motor pattern
1；When the point of load R points with it is right when, MS-N shows motor pattern 2.For horizontal load, when the point of load is below R points,
MS-N shows motor pattern 1；When the point of load is more than R points, MS-N shows motor pattern 2.
As shown in figure 4, for the load-displacement curves figure of the present embodiment.For MS-6, when the point of load is E, MS-6 tables
It is now motor pattern 1, corresponds to the dotted line in figure；When the point of load is F, MS-6 shows as motor pattern 2, corresponds in figure
Solid line.For MS-8, MS-10, MS-12, when the point of load is D, MS-8, MS-10, MS-12 show as motor pattern 1, right
Dotted line in Ying Yutu；When the point of load is F, MS-8, MS-10, MS-12 show as motor pattern 2, correspond to the reality in figure
Line.Displacement-load curves figure accordingly, you can find out deformation extents of the MS-N under a certain specified load.
As shown in figure 5, for the tiling schematic diagram of the present embodiment.As seen from Figure 5, each peripheries MS-6 link in rhomb form 1
The last one node of combination is connect with the vacant joint rotation of other MS-6 structural units；Each peripheries MS-8 link in rhomb form
The last one node of 4 combinations is connect with the vacant joint rotation of other MS-8 structural units；Six peripheries MS-10 diamond shapes connect
The last one node that bar 7 combines is connect with the vacant joint rotation of other MS-10 structural units, four peripheries MS-10 diamond shapes
The last one node that connecting rod 7 combines is not connect with any other node；Six combinations of the peripheries MS-12 link in rhomb form 10 are most
The latter node is connect with the vacant joint rotation of other MS-12 structural units, what six peripheries MS-12 link in rhomb forms 10 combined
The last one node is not connect with any other node.
Above-mentioned specific implementation can by those skilled in the art under the premise of without departing substantially from the principle of the invention and objective with difference
Mode carry out local directed complete set to it, protection scope of the present invention is subject to claims and not by above-mentioned specific implementation institute
Limit, each implementation within its scope is by the constraint of the present invention.
Claims (8)
1. a kind of double rigidity intelligence structures, which is characterized in that be made of several structural units, each structural unit includes：Two
The central scissors connecting rod assembly being rotatablely connected with one heart and several peripheral link in rhomb form combinations, wherein：Two central scissors connect
It is flexibly connected by torsional spring between bar combination, the branches end of each center scissors connecting rod assembly connects with a peripheral diamond shape
The end node rotation connection of bar combination, other two of peripheral link in rhomb form combination are adjacent with both sides respectively with respect to end node
Peripheral link in rhomb form combination end node rotation connection；
Double rigidity intelligence structures have original state and two kinds of motor patterns, wherein：Original state is two centers
Scissors connecting rod assembly is in former long using central hinge as the distribution of center of circle uniform circular and at this time torsional spring；First and second fortune
Dynamic model formula the rotating clockwise and rotate counterclockwise relative to fixed central scissors connecting rod that be respectively Active central scissors connecting rod, it is right
The stretching and compression for answering torsional spring are shown not by original state and two kinds of motor pattern double rigidity intelligence structures
Same rigidity, and different motor patterns is triggered as the position of load moves on this structure, and then generate corresponding rigid
Degree.
2. double rigidity intelligence structures according to claim 1, characterized in that the central scissors connecting rod assembly includes：
The central scissors connecting rod that three or more one end are fixedly connected by central hinge, each branch center scissors connecting rod is with central hinge
Centered on be uniformly distributed.
3. double rigidity intelligence structures according to claim 1, characterized in that central in the central scissors connecting rod assembly
The number of scissors connecting rod is three, four, five or six.
4. double rigidity intelligence structures according to claim 1, characterized in that the peripheral link in rhomb form combination includes four
Rotation connection forms root periphery link in rhomb form ending successively.
5. double rigidity intelligence structures according to claim 1, characterized in that the 4th of the peripheral link in rhomb form combination
A end node for combine with the peripheral link in rhomb form of another adjacent structural unit be rotatablely connected or not with any node
It is connected.
6. double rigidity intelligence structures according to claim 1, characterized in that torsional spring in all structural units it is rigid
It spends coefficient all same and is fixed value k.
7. double rigidity intelligence structures according to claim 1, characterized in that the central scissors connecting rod in all structural units
Number, the shape that number of nodes, the branch's number of combination are combined with peripheral link in rhomb form meet：When the branch of central scissors connecting rod assembly
Number is n, then its interstitial content is n+1, and the quantity of peripheral link in rhomb form combination is 2n, the shape of peripheral link in rhomb form combination by
The angle-determining of one interior angle, size are 2 π/n.
8. double rigidity intelligence structures according to claim 1, characterized in that the arrangement mode of the structural unit is edge
Horizontal, vertical direction arrangement, the distance of adjacent Unit two is respectively the width of its structural unit, height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810181713.0A CN108397684B (en) | 2018-03-06 | 2018-03-06 | Dual stiffness structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810181713.0A CN108397684B (en) | 2018-03-06 | 2018-03-06 | Dual stiffness structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108397684A true CN108397684A (en) | 2018-08-14 |
| CN108397684B CN108397684B (en) | 2020-11-03 |
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ID=63091869
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810181713.0A Expired - Fee Related CN108397684B (en) | 2018-03-06 | 2018-03-06 | Dual stiffness structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939853A (en) * | 2019-11-28 | 2020-03-31 | 北京理工大学 | High-efficient flexible two-dimensional plane lattice structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU5366190A (en) * | 1989-04-21 | 1990-10-25 | Schlegel (Uk) Holdings Limited | Improved carrier and method |
| CN1259186A (en) * | 1997-04-10 | 2000-07-05 | 布莱阿姆青年大学 | Three-dimensional iso-truss structure |
| CN2888241Y (en) * | 2006-02-19 | 2007-04-11 | 王跃 | Wire with adjustable bending rigidity |
| CN205654768U (en) * | 2016-03-25 | 2016-10-19 | 浙江师范大学 | Composite beam that rigidity can be regulated and control based on magnetic current becomes effect |
| CN107039777A (en) * | 2017-05-11 | 2017-08-11 | 哈尔滨工业大学 | The rib net for realizing allosteric type by hard and soft intelligent conversion supports reflecting surface of deployable antenna and its design method |
-
2018
- 2018-03-06 CN CN201810181713.0A patent/CN108397684B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU5366190A (en) * | 1989-04-21 | 1990-10-25 | Schlegel (Uk) Holdings Limited | Improved carrier and method |
| CN1259186A (en) * | 1997-04-10 | 2000-07-05 | 布莱阿姆青年大学 | Three-dimensional iso-truss structure |
| CN2888241Y (en) * | 2006-02-19 | 2007-04-11 | 王跃 | Wire with adjustable bending rigidity |
| CN205654768U (en) * | 2016-03-25 | 2016-10-19 | 浙江师范大学 | Composite beam that rigidity can be regulated and control based on magnetic current becomes effect |
| CN107039777A (en) * | 2017-05-11 | 2017-08-11 | 哈尔滨工业大学 | The rib net for realizing allosteric type by hard and soft intelligent conversion supports reflecting surface of deployable antenna and its design method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939853A (en) * | 2019-11-28 | 2020-03-31 | 北京理工大学 | High-efficient flexible two-dimensional plane lattice structure |
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| Publication number | Publication date |
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| CN108397684B (en) | 2020-11-03 |
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